./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.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/mix033_tso.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/mix033_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_tso.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 03:16:59,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:16:59,329 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:16:59,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:16:59,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:16:59,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:16:59,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:16:59,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:16:59,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:16:59,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:16:59,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:16:59,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:16:59,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:16:59,377 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:16:59,377 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:16:59,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:16:59,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:16:59,378 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:16:59,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:16:59,379 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:16:59,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:16:59,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:16:59,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:16:59,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:16:59,380 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:16:59,380 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:16:59,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:16:59,381 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:16:59,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:16:59,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:16:59,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:16:59,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:16:59,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:16:59,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:16:59,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:16:59,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:16:59,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:16:59,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:16:59,384 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:16:59,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:16:59,385 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:16:59,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:16:59,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:16:59,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:16:59,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:16:59,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:16:59,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:16:59,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:16:59,665 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:16:59,666 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-28 03:17:00,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:17:01,027 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:17:01,028 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix033_tso.oepc.i [2024-06-28 03:17:01,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f14886d/29e9c9001d58428fb99859e194f5d778/FLAG771c5365f [2024-06-28 03:17:01,060 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30f14886d/29e9c9001d58428fb99859e194f5d778 [2024-06-28 03:17:01,062 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:17:01,063 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:17:01,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix033_tso.oepc.yml/witness.yml [2024-06-28 03:17:01,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:17:01,268 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:17:01,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:17:01,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:17:01,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:17:01,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:17:01" (1/2) ... [2024-06-28 03:17:01,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2800b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:17:01, skipping insertion in model container [2024-06-28 03:17:01,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:17:01" (1/2) ... [2024-06-28 03:17:01,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@555da886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:17:01, skipping insertion in model container [2024-06-28 03:17:01,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:17:01" (2/2) ... [2024-06-28 03:17:01,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2800b9d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:01, skipping insertion in model container [2024-06-28 03:17:01,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:17:01" (2/2) ... [2024-06-28 03:17:01,280 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:17:01,411 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:17:01,413 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] (((((((((((((((((((((! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-28 03:17:01,413 INFO L97 edCorrectnessWitness]: Location invariant before [L845-L845] (((((((((((((((((((((! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__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)) && (b == 0 || b == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-28 03:17:01,413 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((((! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-28 03:17:01,413 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:17:01,413 INFO L106 edCorrectnessWitness]: ghost_update [L841-L841] multithreaded = 1; [2024-06-28 03:17:01,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:17:01,899 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:17:01,909 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:17:02,082 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:17:02,133 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:17:02,133 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02 WrapperNode [2024-06-28 03:17:02,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:17:02,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:17:02,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:17:02,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:17:02,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,192 INFO L138 Inliner]: procedures = 175, calls = 51, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-28 03:17:02,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:17:02,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:17:02,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:17:02,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:17:02,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,208 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,225 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 03:17:02,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:17:02,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:17:02,248 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:17:02,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:17:02,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (1/1) ... [2024-06-28 03:17:02,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:17:02,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:17:02,297 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 03:17:02,309 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 03:17:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:17:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:17:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:17:02,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:17:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:17:02,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:17:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:17:02,346 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:17:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:17:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:17:02,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:17:02,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:17:02,348 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 03:17:02,510 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:17:02,513 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:17:02,940 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:17:02,940 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:17:03,137 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:17:03,137 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:17:03,138 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:17:03 BoogieIcfgContainer [2024-06-28 03:17:03,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:17:03,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:17:03,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:17:03,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:17:03,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:17:01" (1/4) ... [2024-06-28 03:17:03,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:17:03, skipping insertion in model container [2024-06-28 03:17:03,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:17:01" (2/4) ... [2024-06-28 03:17:03,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74764e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:17:03, skipping insertion in model container [2024-06-28 03:17:03,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:17:02" (3/4) ... [2024-06-28 03:17:03,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74764e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:17:03, skipping insertion in model container [2024-06-28 03:17:03,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:17:03" (4/4) ... [2024-06-28 03:17:03,146 INFO L112 eAbstractionObserver]: Analyzing ICFG mix033_tso.oepc.i [2024-06-28 03:17:03,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:17:03,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:17:03,162 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:17:03,217 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:17:03,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 03:17:03,302 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-28 03:17:03,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:17:03,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:17:03,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 03:17:03,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-28 03:17:03,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:17:03,330 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;@6d247093, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:17:03,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:17:03,335 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:17:03,335 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:17:03,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:17:03,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:03,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:17:03,337 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 03:17:03,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash 385862209, now seen corresponding path program 1 times [2024-06-28 03:17:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:03,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948862843] [2024-06-28 03:17:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:04,660 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 03:17:04,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948862843] [2024-06-28 03:17:04,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948862843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:04,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:04,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:17:04,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065512135] [2024-06-28 03:17:04,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:17:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:04,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:17:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:17:04,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:17:04,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:04,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:04,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:17:04,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:05,267 INFO L124 PetriNetUnfolderBase]: 1659/2623 cut-off events. [2024-06-28 03:17:05,267 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 03:17:05,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5187 conditions, 2623 events. 1659/2623 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13520 event pairs, 1184 based on Foata normal form. 1/2512 useless extension candidates. Maximal degree in co-relation 5175. Up to 2465 conditions per place. [2024-06-28 03:17:05,289 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 03:17:05,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 179 flow [2024-06-28 03:17:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:17:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:17:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 03:17:05,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2024-06-28 03:17:05,304 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 79 transitions. [2024-06-28 03:17:05,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 179 flow [2024-06-28 03:17:05,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:05,312 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-28 03:17:05,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:17:05,316 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-28 03:17:05,317 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-28 03:17:05,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:05,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:05,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:17:05,318 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 03:17:05,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1446442080, now seen corresponding path program 1 times [2024-06-28 03:17:05,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:05,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842263660] [2024-06-28 03:17:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:06,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:06,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842263660] [2024-06-28 03:17:06,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842263660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:06,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:06,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:17:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948703685] [2024-06-28 03:17:06,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:06,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:17:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:06,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:17:06,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:17:06,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:06,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:06,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:06,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:06,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:06,583 INFO L124 PetriNetUnfolderBase]: 1905/2936 cut-off events. [2024-06-28 03:17:06,583 INFO L125 PetriNetUnfolderBase]: For 545/545 co-relation queries the response was YES. [2024-06-28 03:17:06,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 2936 events. 1905/2936 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14818 event pairs, 1212 based on Foata normal form. 3/2888 useless extension candidates. Maximal degree in co-relation 6545. Up to 2801 conditions per place. [2024-06-28 03:17:06,603 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 41 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-28 03:17:06,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 248 flow [2024-06-28 03:17:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:17:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:17:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-28 03:17:06,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 03:17:06,606 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 99 transitions. [2024-06-28 03:17:06,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 248 flow [2024-06-28 03:17:06,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:17:06,608 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-28 03:17:06,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 03:17:06,609 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-28 03:17:06,610 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-28 03:17:06,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:06,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:06,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:06,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:17:06,611 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 03:17:06,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:06,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1890033040, now seen corresponding path program 1 times [2024-06-28 03:17:06,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:06,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293826146] [2024-06-28 03:17:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:06,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293826146] [2024-06-28 03:17:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293826146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:07,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:17:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953169740] [2024-06-28 03:17:07,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:07,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:17:07,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:17:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:17:07,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:07,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:07,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:07,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:07,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:08,054 INFO L124 PetriNetUnfolderBase]: 1893/2922 cut-off events. [2024-06-28 03:17:08,055 INFO L125 PetriNetUnfolderBase]: For 1534/1534 co-relation queries the response was YES. [2024-06-28 03:17:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 2922 events. 1893/2922 cut-off events. For 1534/1534 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14751 event pairs, 878 based on Foata normal form. 6/2879 useless extension candidates. Maximal degree in co-relation 7188. Up to 2753 conditions per place. [2024-06-28 03:17:08,071 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 49 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-28 03:17:08,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 66 transitions, 330 flow [2024-06-28 03:17:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:17:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:17:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 03:17:08,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545454545454546 [2024-06-28 03:17:08,075 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 5 states and 122 transitions. [2024-06-28 03:17:08,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 66 transitions, 330 flow [2024-06-28 03:17:08,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 316 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:17:08,078 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 178 flow [2024-06-28 03:17:08,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-28 03:17:08,079 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2024-06-28 03:17:08,079 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 178 flow [2024-06-28 03:17:08,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:08,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:08,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:08,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:17:08,080 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 03:17:08,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash 405941549, now seen corresponding path program 1 times [2024-06-28 03:17:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:08,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454295181] [2024-06-28 03:17:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:08,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:09,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454295181] [2024-06-28 03:17:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454295181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:09,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:09,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:09,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770253971] [2024-06-28 03:17:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:09,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:09,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:09,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 03:17:09,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:09,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:09,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 03:17:09,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:10,125 INFO L124 PetriNetUnfolderBase]: 1884/2903 cut-off events. [2024-06-28 03:17:10,126 INFO L125 PetriNetUnfolderBase]: For 2854/2854 co-relation queries the response was YES. [2024-06-28 03:17:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7821 conditions, 2903 events. 1884/2903 cut-off events. For 2854/2854 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14617 event pairs, 690 based on Foata normal form. 6/2858 useless extension candidates. Maximal degree in co-relation 7806. Up to 2708 conditions per place. [2024-06-28 03:17:10,144 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 53 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-28 03:17:10,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 384 flow [2024-06-28 03:17:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 03:17:10,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-06-28 03:17:10,149 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 178 flow. Second operand 6 states and 140 transitions. [2024-06-28 03:17:10,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 384 flow [2024-06-28 03:17:10,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 360 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:10,154 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 197 flow [2024-06-28 03:17:10,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 03:17:10,156 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-06-28 03:17:10,156 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 197 flow [2024-06-28 03:17:10,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:10,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:10,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:10,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:17:10,157 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 03:17:10,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1427638969, now seen corresponding path program 1 times [2024-06-28 03:17:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312252745] [2024-06-28 03:17:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:10,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:11,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312252745] [2024-06-28 03:17:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312252745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:11,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:11,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:17:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654124477] [2024-06-28 03:17:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:11,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:17:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:17:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:17:11,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:11,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 197 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 03:17:11,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:11,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:11,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:11,611 INFO L124 PetriNetUnfolderBase]: 1627/2584 cut-off events. [2024-06-28 03:17:11,612 INFO L125 PetriNetUnfolderBase]: For 3895/3895 co-relation queries the response was YES. [2024-06-28 03:17:11,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7335 conditions, 2584 events. 1627/2584 cut-off events. For 3895/3895 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13324 event pairs, 814 based on Foata normal form. 2/2517 useless extension candidates. Maximal degree in co-relation 7318. Up to 2407 conditions per place. [2024-06-28 03:17:11,631 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 44 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-28 03:17:11,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 345 flow [2024-06-28 03:17:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:17:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:17:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-28 03:17:11,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-28 03:17:11,633 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 197 flow. Second operand 5 states and 101 transitions. [2024-06-28 03:17:11,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 345 flow [2024-06-28 03:17:11,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 312 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:11,640 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 210 flow [2024-06-28 03:17:11,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 03:17:11,642 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-06-28 03:17:11,643 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 210 flow [2024-06-28 03:17:11,643 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 03:17:11,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:11,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:17:11,647 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 03:17:11,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:11,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1307133913, now seen corresponding path program 1 times [2024-06-28 03:17:11,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:11,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294559380] [2024-06-28 03:17:11,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:11,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:12,758 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 03:17:12,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:12,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294559380] [2024-06-28 03:17:12,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294559380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:12,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:12,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:12,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758422050] [2024-06-28 03:17:12,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:12,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:12,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:12,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:12,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:12,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 210 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 03:17:12,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:12,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:12,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:13,371 INFO L124 PetriNetUnfolderBase]: 1918/3084 cut-off events. [2024-06-28 03:17:13,371 INFO L125 PetriNetUnfolderBase]: For 6144/6144 co-relation queries the response was YES. [2024-06-28 03:17:13,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9146 conditions, 3084 events. 1918/3084 cut-off events. For 6144/6144 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16231 event pairs, 972 based on Foata normal form. 2/3057 useless extension candidates. Maximal degree in co-relation 9127. Up to 2819 conditions per place. [2024-06-28 03:17:13,400 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 49 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-06-28 03:17:13,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 388 flow [2024-06-28 03:17:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-28 03:17:13,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:17:13,402 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 210 flow. Second operand 6 states and 114 transitions. [2024-06-28 03:17:13,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 388 flow [2024-06-28 03:17:13,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 366 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:13,407 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 244 flow [2024-06-28 03:17:13,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-28 03:17:13,410 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2024-06-28 03:17:13,410 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 244 flow [2024-06-28 03:17:13,410 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 03:17:13,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:13,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:13,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:17:13,411 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 03:17:13,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1911099942, now seen corresponding path program 1 times [2024-06-28 03:17:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:13,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665973588] [2024-06-28 03:17:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:13,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:14,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:14,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665973588] [2024-06-28 03:17:14,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665973588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:14,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:14,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:14,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298786076] [2024-06-28 03:17:14,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:14,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:14,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:14,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:14,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:14,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 244 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 03:17:14,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:14,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:14,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:14,971 INFO L124 PetriNetUnfolderBase]: 2094/3285 cut-off events. [2024-06-28 03:17:14,971 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2024-06-28 03:17:14,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10628 conditions, 3285 events. 2094/3285 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16988 event pairs, 1034 based on Foata normal form. 2/3275 useless extension candidates. Maximal degree in co-relation 10608. Up to 3060 conditions per place. [2024-06-28 03:17:14,991 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 54 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-06-28 03:17:14,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 442 flow [2024-06-28 03:17:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-28 03:17:14,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:17:14,994 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 244 flow. Second operand 6 states and 117 transitions. [2024-06-28 03:17:14,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 442 flow [2024-06-28 03:17:14,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 410 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:14,999 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 270 flow [2024-06-28 03:17:14,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 03:17:15,000 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-06-28 03:17:15,001 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 270 flow [2024-06-28 03:17:15,001 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 03:17:15,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:15,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:15,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:17:15,002 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 03:17:15,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:15,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1910950212, now seen corresponding path program 2 times [2024-06-28 03:17:15,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:15,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507592479] [2024-06-28 03:17:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:15,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:16,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:16,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507592479] [2024-06-28 03:17:16,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507592479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:16,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:16,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:16,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829634304] [2024-06-28 03:17:16,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:16,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:16,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:16,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:16,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:16,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 270 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 03:17:16,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:16,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:16,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:16,711 INFO L124 PetriNetUnfolderBase]: 2089/3280 cut-off events. [2024-06-28 03:17:16,712 INFO L125 PetriNetUnfolderBase]: For 12666/12678 co-relation queries the response was YES. [2024-06-28 03:17:16,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11316 conditions, 3280 events. 2089/3280 cut-off events. For 12666/12678 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16997 event pairs, 1041 based on Foata normal form. 10/3276 useless extension candidates. Maximal degree in co-relation 11295. Up to 3035 conditions per place. [2024-06-28 03:17:16,733 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 49 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-28 03:17:16,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 466 flow [2024-06-28 03:17:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:17:16,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 03:17:16,738 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 270 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:17:16,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 466 flow [2024-06-28 03:17:16,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 432 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:16,743 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 310 flow [2024-06-28 03:17:16,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-06-28 03:17:16,745 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-06-28 03:17:16,745 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 310 flow [2024-06-28 03:17:16,745 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 03:17:16,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:16,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:16,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:17:16,746 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 03:17:16,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:16,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1506271252, now seen corresponding path program 1 times [2024-06-28 03:17:16,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:16,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323755519] [2024-06-28 03:17:16,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:16,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323755519] [2024-06-28 03:17:17,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323755519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:17,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:17,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687490725] [2024-06-28 03:17:17,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:17,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:17,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:17,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:18,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:18,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 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 03:17:18,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:18,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:18,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:18,612 INFO L124 PetriNetUnfolderBase]: 1919/3113 cut-off events. [2024-06-28 03:17:18,612 INFO L125 PetriNetUnfolderBase]: For 13547/13547 co-relation queries the response was YES. [2024-06-28 03:17:18,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 3113 events. 1919/3113 cut-off events. For 13547/13547 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16553 event pairs, 936 based on Foata normal form. 2/3102 useless extension candidates. Maximal degree in co-relation 11073. Up to 2812 conditions per place. [2024-06-28 03:17:18,632 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 58 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-28 03:17:18,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 540 flow [2024-06-28 03:17:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:17:18,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-28 03:17:18,634 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 310 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:17:18,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 540 flow [2024-06-28 03:17:18,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 490 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:18,639 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 347 flow [2024-06-28 03:17:18,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=347, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-28 03:17:18,640 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2024-06-28 03:17:18,640 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 347 flow [2024-06-28 03:17:18,641 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 03:17:18,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:18,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:18,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:17:18,641 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 03:17:18,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 885324952, now seen corresponding path program 1 times [2024-06-28 03:17:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:18,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000635833] [2024-06-28 03:17:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:18,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000635833] [2024-06-28 03:17:19,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000635833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:19,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:19,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:19,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792376409] [2024-06-28 03:17:19,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:19,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:19,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:19,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 347 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 03:17:19,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:19,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:19,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:20,391 INFO L124 PetriNetUnfolderBase]: 2106/3319 cut-off events. [2024-06-28 03:17:20,391 INFO L125 PetriNetUnfolderBase]: For 19478/19478 co-relation queries the response was YES. [2024-06-28 03:17:20,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12835 conditions, 3319 events. 2106/3319 cut-off events. For 19478/19478 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17200 event pairs, 829 based on Foata normal form. 4/3309 useless extension candidates. Maximal degree in co-relation 12811. Up to 3039 conditions per place. [2024-06-28 03:17:20,411 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 68 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 03:17:20,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 629 flow [2024-06-28 03:17:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:17:20,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-28 03:17:20,413 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 347 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:17:20,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 629 flow [2024-06-28 03:17:20,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 581 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:20,422 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 397 flow [2024-06-28 03:17:20,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-06-28 03:17:20,423 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2024-06-28 03:17:20,423 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 397 flow [2024-06-28 03:17:20,424 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 03:17:20,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:20,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:20,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:17:20,424 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 03:17:20,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2031876794, now seen corresponding path program 1 times [2024-06-28 03:17:20,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:20,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795219604] [2024-06-28 03:17:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:21,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795219604] [2024-06-28 03:17:21,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795219604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:21,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:21,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:21,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538098864] [2024-06-28 03:17:21,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:21,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:21,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:21,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:21,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:21,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:21,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 03:17:21,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:21,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:21,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:22,070 INFO L124 PetriNetUnfolderBase]: 2249/3466 cut-off events. [2024-06-28 03:17:22,070 INFO L125 PetriNetUnfolderBase]: For 23640/23640 co-relation queries the response was YES. [2024-06-28 03:17:22,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14279 conditions, 3466 events. 2249/3466 cut-off events. For 23640/23640 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17394 event pairs, 888 based on Foata normal form. 2/3453 useless extension candidates. Maximal degree in co-relation 14253. Up to 3277 conditions per place. [2024-06-28 03:17:22,090 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 72 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-28 03:17:22,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 661 flow [2024-06-28 03:17:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:17:22,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-28 03:17:22,092 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 397 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:17:22,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 661 flow [2024-06-28 03:17:22,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 616 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:22,101 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 430 flow [2024-06-28 03:17:22,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-06-28 03:17:22,102 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-06-28 03:17:22,102 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 430 flow [2024-06-28 03:17:22,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 03:17:22,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:22,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:22,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:17:22,103 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 03:17:22,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2092387886, now seen corresponding path program 2 times [2024-06-28 03:17:22,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578747079] [2024-06-28 03:17:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:22,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578747079] [2024-06-28 03:17:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578747079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:23,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:23,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782885035] [2024-06-28 03:17:23,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:23,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:23,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:23,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:23,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 430 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 03:17:23,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:23,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:23,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:23,802 INFO L124 PetriNetUnfolderBase]: 2174/3399 cut-off events. [2024-06-28 03:17:23,803 INFO L125 PetriNetUnfolderBase]: For 29141/29151 co-relation queries the response was YES. [2024-06-28 03:17:23,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14815 conditions, 3399 events. 2174/3399 cut-off events. For 29141/29151 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17480 event pairs, 817 based on Foata normal form. 4/3376 useless extension candidates. Maximal degree in co-relation 14788. Up to 3082 conditions per place. [2024-06-28 03:17:23,823 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 69 selfloop transitions, 25 changer transitions 0/102 dead transitions. [2024-06-28 03:17:23,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 810 flow [2024-06-28 03:17:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:23,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 03:17:23,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-28 03:17:23,825 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 430 flow. Second operand 7 states and 141 transitions. [2024-06-28 03:17:23,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 810 flow [2024-06-28 03:17:23,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 756 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:23,835 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 520 flow [2024-06-28 03:17:23,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-28 03:17:23,835 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2024-06-28 03:17:23,836 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 520 flow [2024-06-28 03:17:23,836 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 03:17:23,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:23,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:17:23,836 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 03:17:23,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash 550223744, now seen corresponding path program 2 times [2024-06-28 03:17:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959454033] [2024-06-28 03:17:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:24,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:24,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959454033] [2024-06-28 03:17:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959454033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:24,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:24,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:24,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466344356] [2024-06-28 03:17:24,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:24,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:24,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:24,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:24,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 520 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 03:17:24,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:24,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:24,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:25,431 INFO L124 PetriNetUnfolderBase]: 2298/3536 cut-off events. [2024-06-28 03:17:25,431 INFO L125 PetriNetUnfolderBase]: For 34491/34506 co-relation queries the response was YES. [2024-06-28 03:17:25,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16100 conditions, 3536 events. 2298/3536 cut-off events. For 34491/34506 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17748 event pairs, 881 based on Foata normal form. 12/3528 useless extension candidates. Maximal degree in co-relation 16072. Up to 3301 conditions per place. [2024-06-28 03:17:25,453 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 72 selfloop transitions, 27 changer transitions 0/104 dead transitions. [2024-06-28 03:17:25,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 904 flow [2024-06-28 03:17:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 03:17:25,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-28 03:17:25,455 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 520 flow. Second operand 7 states and 130 transitions. [2024-06-28 03:17:25,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 904 flow [2024-06-28 03:17:25,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 854 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:25,472 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 622 flow [2024-06-28 03:17:25,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-06-28 03:17:25,473 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 34 predicate places. [2024-06-28 03:17:25,473 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 622 flow [2024-06-28 03:17:25,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 03:17:25,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:25,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:25,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:17:25,474 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 03:17:25,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash 549986408, now seen corresponding path program 3 times [2024-06-28 03:17:25,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:25,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538098275] [2024-06-28 03:17:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:26,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538098275] [2024-06-28 03:17:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538098275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:26,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132241641] [2024-06-28 03:17:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:26,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:26,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:26,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 622 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 03:17:26,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:26,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:26,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:27,075 INFO L124 PetriNetUnfolderBase]: 2161/3403 cut-off events. [2024-06-28 03:17:27,075 INFO L125 PetriNetUnfolderBase]: For 39203/39218 co-relation queries the response was YES. [2024-06-28 03:17:27,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16077 conditions, 3403 events. 2161/3403 cut-off events. For 39203/39218 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17640 event pairs, 818 based on Foata normal form. 10/3393 useless extension candidates. Maximal degree in co-relation 16047. Up to 3031 conditions per place. [2024-06-28 03:17:27,096 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 68 selfloop transitions, 31 changer transitions 0/109 dead transitions. [2024-06-28 03:17:27,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 982 flow [2024-06-28 03:17:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 03:17:27,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:17:27,098 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 622 flow. Second operand 7 states and 140 transitions. [2024-06-28 03:17:27,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 982 flow [2024-06-28 03:17:27,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 926 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:27,119 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 690 flow [2024-06-28 03:17:27,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=690, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2024-06-28 03:17:27,120 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2024-06-28 03:17:27,120 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 690 flow [2024-06-28 03:17:27,121 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 03:17:27,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:27,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:27,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:17:27,121 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 03:17:27,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:27,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1250259928, now seen corresponding path program 3 times [2024-06-28 03:17:27,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:27,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872489105] [2024-06-28 03:17:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:27,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:28,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:28,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872489105] [2024-06-28 03:17:28,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872489105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:28,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:28,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:17:28,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609307509] [2024-06-28 03:17:28,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:28,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:17:28,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:28,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:17:28,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:17:28,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:28,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 690 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 03:17:28,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:28,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:28,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:28,835 INFO L124 PetriNetUnfolderBase]: 2283/3522 cut-off events. [2024-06-28 03:17:28,835 INFO L125 PetriNetUnfolderBase]: For 44823/44829 co-relation queries the response was YES. [2024-06-28 03:17:28,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17401 conditions, 3522 events. 2283/3522 cut-off events. For 44823/44829 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17700 event pairs, 876 based on Foata normal form. 6/3511 useless extension candidates. Maximal degree in co-relation 17369. Up to 3282 conditions per place. [2024-06-28 03:17:28,853 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 72 selfloop transitions, 29 changer transitions 0/106 dead transitions. [2024-06-28 03:17:28,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 952 flow [2024-06-28 03:17:28,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:17:28,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-28 03:17:28,855 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 690 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:17:28,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 952 flow [2024-06-28 03:17:28,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 106 transitions, 828 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:28,880 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 652 flow [2024-06-28 03:17:28,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=652, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-06-28 03:17:28,881 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-06-28 03:17:28,881 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 652 flow [2024-06-28 03:17:28,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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 03:17:28,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:28,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:28,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:17:28,882 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 03:17:28,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1628058077, now seen corresponding path program 1 times [2024-06-28 03:17:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:28,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156327734] [2024-06-28 03:17:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:29,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:29,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156327734] [2024-06-28 03:17:29,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156327734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:29,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:29,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:17:29,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171497249] [2024-06-28 03:17:29,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:29,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:17:29,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:29,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:17:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:17:29,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:29,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 652 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 03:17:29,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:29,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:29,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:30,109 INFO L124 PetriNetUnfolderBase]: 2166/3520 cut-off events. [2024-06-28 03:17:30,110 INFO L125 PetriNetUnfolderBase]: For 46267/46267 co-relation queries the response was YES. [2024-06-28 03:17:30,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17030 conditions, 3520 events. 2166/3520 cut-off events. For 46267/46267 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18771 event pairs, 834 based on Foata normal form. 1/3505 useless extension candidates. Maximal degree in co-relation 16996. Up to 3173 conditions per place. [2024-06-28 03:17:30,128 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 79 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2024-06-28 03:17:30,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 98 transitions, 868 flow [2024-06-28 03:17:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:17:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:17:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 03:17:30,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-06-28 03:17:30,129 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 652 flow. Second operand 5 states and 93 transitions. [2024-06-28 03:17:30,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 98 transitions, 868 flow [2024-06-28 03:17:30,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 98 transitions, 801 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:30,156 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 637 flow [2024-06-28 03:17:30,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=637, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-06-28 03:17:30,156 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-06-28 03:17:30,156 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 637 flow [2024-06-28 03:17:30,157 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 03:17:30,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:30,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:30,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:17:30,157 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 03:17:30,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:30,158 INFO L85 PathProgramCache]: Analyzing trace with hash -799212223, now seen corresponding path program 1 times [2024-06-28 03:17:30,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:30,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935360319] [2024-06-28 03:17:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:30,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:31,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:31,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935360319] [2024-06-28 03:17:31,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935360319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:31,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:31,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:31,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659683768] [2024-06-28 03:17:31,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:31,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:31,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:31,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:31,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:31,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:31,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 637 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 03:17:31,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:31,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:31,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:32,220 INFO L124 PetriNetUnfolderBase]: 2149/3380 cut-off events. [2024-06-28 03:17:32,221 INFO L125 PetriNetUnfolderBase]: For 50928/50928 co-relation queries the response was YES. [2024-06-28 03:17:32,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17374 conditions, 3380 events. 2149/3380 cut-off events. For 50928/50928 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17342 event pairs, 800 based on Foata normal form. 2/3379 useless extension candidates. Maximal degree in co-relation 17338. Up to 3081 conditions per place. [2024-06-28 03:17:32,239 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 84 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-28 03:17:32,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 115 transitions, 913 flow [2024-06-28 03:17:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:17:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:17:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:17:32,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-06-28 03:17:32,240 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 637 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:17:32,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 115 transitions, 913 flow [2024-06-28 03:17:32,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 859 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:32,256 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 637 flow [2024-06-28 03:17:32,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2024-06-28 03:17:32,257 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2024-06-28 03:17:32,257 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 637 flow [2024-06-28 03:17:32,257 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 03:17:32,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:32,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:32,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:17:32,258 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 03:17:32,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:32,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1675270902, now seen corresponding path program 1 times [2024-06-28 03:17:32,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:32,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808345223] [2024-06-28 03:17:32,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:32,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:33,262 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 03:17:33,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:33,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808345223] [2024-06-28 03:17:33,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808345223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:33,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:33,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:33,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848956603] [2024-06-28 03:17:33,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:33,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:33,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:33,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:33,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:33,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:33,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:33,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:33,931 INFO L124 PetriNetUnfolderBase]: 2297/3537 cut-off events. [2024-06-28 03:17:33,931 INFO L125 PetriNetUnfolderBase]: For 56639/56639 co-relation queries the response was YES. [2024-06-28 03:17:33,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18525 conditions, 3537 events. 2297/3537 cut-off events. For 56639/56639 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17653 event pairs, 845 based on Foata normal form. 4/3538 useless extension candidates. Maximal degree in co-relation 18488. Up to 3295 conditions per place. [2024-06-28 03:17:33,950 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 97 selfloop transitions, 22 changer transitions 0/124 dead transitions. [2024-06-28 03:17:33,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 124 transitions, 1007 flow [2024-06-28 03:17:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:17:33,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:17:33,952 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 637 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:17:33,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 124 transitions, 1007 flow [2024-06-28 03:17:33,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 124 transitions, 957 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:33,974 INFO L231 Difference]: Finished difference. Result has 93 places, 94 transitions, 693 flow [2024-06-28 03:17:33,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=693, PETRI_PLACES=93, PETRI_TRANSITIONS=94} [2024-06-28 03:17:33,974 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-06-28 03:17:33,974 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 94 transitions, 693 flow [2024-06-28 03:17:33,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:33,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:33,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:33,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:17:33,975 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 03:17:33,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1678989972, now seen corresponding path program 2 times [2024-06-28 03:17:33,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:33,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890207620] [2024-06-28 03:17:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:35,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890207620] [2024-06-28 03:17:35,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890207620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:35,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:35,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:35,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058315476] [2024-06-28 03:17:35,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:35,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:35,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:35,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:35,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:35,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:35,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 94 transitions, 693 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:35,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:35,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:35,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:35,777 INFO L124 PetriNetUnfolderBase]: 2367/3633 cut-off events. [2024-06-28 03:17:35,777 INFO L125 PetriNetUnfolderBase]: For 66354/66354 co-relation queries the response was YES. [2024-06-28 03:17:35,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19979 conditions, 3633 events. 2367/3633 cut-off events. For 66354/66354 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18098 event pairs, 839 based on Foata normal form. 4/3634 useless extension candidates. Maximal degree in co-relation 19941. Up to 3293 conditions per place. [2024-06-28 03:17:35,795 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 93 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-06-28 03:17:35,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 1341 flow [2024-06-28 03:17:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:17:35,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:17:35,797 INFO L175 Difference]: Start difference. First operand has 93 places, 94 transitions, 693 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:17:35,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 1341 flow [2024-06-28 03:17:35,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 135 transitions, 1259 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:35,825 INFO L231 Difference]: Finished difference. Result has 95 places, 103 transitions, 861 flow [2024-06-28 03:17:35,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=861, PETRI_PLACES=95, PETRI_TRANSITIONS=103} [2024-06-28 03:17:35,825 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 50 predicate places. [2024-06-28 03:17:35,825 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 103 transitions, 861 flow [2024-06-28 03:17:35,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:35,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:35,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:17:35,826 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 03:17:35,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 439521989, now seen corresponding path program 1 times [2024-06-28 03:17:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:35,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86344497] [2024-06-28 03:17:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:36,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:36,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86344497] [2024-06-28 03:17:36,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86344497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:36,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:36,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337551484] [2024-06-28 03:17:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:36,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:36,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:36,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:36,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:36,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 103 transitions, 861 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:36,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:36,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:36,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:37,647 INFO L124 PetriNetUnfolderBase]: 2378/3659 cut-off events. [2024-06-28 03:17:37,647 INFO L125 PetriNetUnfolderBase]: For 74552/74552 co-relation queries the response was YES. [2024-06-28 03:17:37,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20790 conditions, 3659 events. 2378/3659 cut-off events. For 74552/74552 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18342 event pairs, 826 based on Foata normal form. 2/3658 useless extension candidates. Maximal degree in co-relation 20751. Up to 3456 conditions per place. [2024-06-28 03:17:37,668 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 106 selfloop transitions, 19 changer transitions 0/130 dead transitions. [2024-06-28 03:17:37,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 130 transitions, 1223 flow [2024-06-28 03:17:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:17:37,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:17:37,670 INFO L175 Difference]: Start difference. First operand has 95 places, 103 transitions, 861 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:17:37,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 130 transitions, 1223 flow [2024-06-28 03:17:37,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 130 transitions, 1155 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:37,699 INFO L231 Difference]: Finished difference. Result has 100 places, 106 transitions, 895 flow [2024-06-28 03:17:37,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=895, PETRI_PLACES=100, PETRI_TRANSITIONS=106} [2024-06-28 03:17:37,700 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 55 predicate places. [2024-06-28 03:17:37,700 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 106 transitions, 895 flow [2024-06-28 03:17:37,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:37,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:37,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:37,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:17:37,701 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 03:17:37,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1678995552, now seen corresponding path program 3 times [2024-06-28 03:17:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:37,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576330184] [2024-06-28 03:17:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:37,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:38,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:38,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576330184] [2024-06-28 03:17:38,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576330184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:38,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:38,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:38,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750788198] [2024-06-28 03:17:38,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:38,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:38,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:38,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:38,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:38,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:38,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 106 transitions, 895 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:38,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:38,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:38,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:39,371 INFO L124 PetriNetUnfolderBase]: 2368/3637 cut-off events. [2024-06-28 03:17:39,371 INFO L125 PetriNetUnfolderBase]: For 80543/80543 co-relation queries the response was YES. [2024-06-28 03:17:39,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21242 conditions, 3637 events. 2368/3637 cut-off events. For 80543/80543 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18142 event pairs, 811 based on Foata normal form. 4/3638 useless extension candidates. Maximal degree in co-relation 21201. Up to 3301 conditions per place. [2024-06-28 03:17:39,392 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 92 selfloop transitions, 39 changer transitions 0/136 dead transitions. [2024-06-28 03:17:39,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 136 transitions, 1317 flow [2024-06-28 03:17:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:17:39,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:17:39,394 INFO L175 Difference]: Start difference. First operand has 100 places, 106 transitions, 895 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:17:39,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 136 transitions, 1317 flow [2024-06-28 03:17:39,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 136 transitions, 1199 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:39,426 INFO L231 Difference]: Finished difference. Result has 102 places, 106 transitions, 863 flow [2024-06-28 03:17:39,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=863, PETRI_PLACES=102, PETRI_TRANSITIONS=106} [2024-06-28 03:17:39,427 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-06-28 03:17:39,427 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 106 transitions, 863 flow [2024-06-28 03:17:39,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:39,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:39,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:39,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:17:39,428 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 03:17:39,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:39,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1642983463, now seen corresponding path program 2 times [2024-06-28 03:17:39,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:39,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729987769] [2024-06-28 03:17:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:39,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:40,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:40,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:40,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729987769] [2024-06-28 03:17:40,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729987769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:40,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:40,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:40,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220288422] [2024-06-28 03:17:40,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:40,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:40,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:40,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:40,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 863 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:40,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:40,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:40,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:41,159 INFO L124 PetriNetUnfolderBase]: 2395/3687 cut-off events. [2024-06-28 03:17:41,160 INFO L125 PetriNetUnfolderBase]: For 87399/87405 co-relation queries the response was YES. [2024-06-28 03:17:41,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21850 conditions, 3687 events. 2395/3687 cut-off events. For 87399/87405 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18496 event pairs, 830 based on Foata normal form. 6/3689 useless extension candidates. Maximal degree in co-relation 21808. Up to 3396 conditions per place. [2024-06-28 03:17:41,180 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 96 selfloop transitions, 40 changer transitions 0/141 dead transitions. [2024-06-28 03:17:41,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 141 transitions, 1531 flow [2024-06-28 03:17:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:17:41,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:17:41,181 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 863 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:17:41,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 141 transitions, 1531 flow [2024-06-28 03:17:41,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 141 transitions, 1457 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:41,213 INFO L231 Difference]: Finished difference. Result has 104 places, 115 transitions, 1051 flow [2024-06-28 03:17:41,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1051, PETRI_PLACES=104, PETRI_TRANSITIONS=115} [2024-06-28 03:17:41,213 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2024-06-28 03:17:41,213 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 115 transitions, 1051 flow [2024-06-28 03:17:41,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:41,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:41,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:41,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:17:41,214 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 03:17:41,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash 583614112, now seen corresponding path program 4 times [2024-06-28 03:17:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189656762] [2024-06-28 03:17:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:42,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:42,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189656762] [2024-06-28 03:17:42,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189656762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:42,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:42,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749071223] [2024-06-28 03:17:42,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:42,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:42,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:42,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 115 transitions, 1051 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:42,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:42,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:42,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:42,961 INFO L124 PetriNetUnfolderBase]: 2417/3725 cut-off events. [2024-06-28 03:17:42,961 INFO L125 PetriNetUnfolderBase]: For 96998/97004 co-relation queries the response was YES. [2024-06-28 03:17:42,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22749 conditions, 3725 events. 2417/3725 cut-off events. For 96998/97004 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18716 event pairs, 823 based on Foata normal form. 8/3726 useless extension candidates. Maximal degree in co-relation 22706. Up to 3257 conditions per place. [2024-06-28 03:17:42,983 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 87 selfloop transitions, 57 changer transitions 0/149 dead transitions. [2024-06-28 03:17:42,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 149 transitions, 1629 flow [2024-06-28 03:17:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:42,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:17:42,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 03:17:42,985 INFO L175 Difference]: Start difference. First operand has 104 places, 115 transitions, 1051 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:17:42,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 149 transitions, 1629 flow [2024-06-28 03:17:43,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 149 transitions, 1554 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:43,039 INFO L231 Difference]: Finished difference. Result has 109 places, 121 transitions, 1232 flow [2024-06-28 03:17:43,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=109, PETRI_TRANSITIONS=121} [2024-06-28 03:17:43,040 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2024-06-28 03:17:43,040 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 121 transitions, 1232 flow [2024-06-28 03:17:43,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:43,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:43,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:43,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:17:43,041 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 03:17:43,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1643250373, now seen corresponding path program 3 times [2024-06-28 03:17:43,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:43,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063599288] [2024-06-28 03:17:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:43,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:44,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:44,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063599288] [2024-06-28 03:17:44,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063599288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:44,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:44,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:44,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94507011] [2024-06-28 03:17:44,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:44,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:44,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:44,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:44,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:44,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:44,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 121 transitions, 1232 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:44,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:44,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:44,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:44,627 INFO L124 PetriNetUnfolderBase]: 2412/3717 cut-off events. [2024-06-28 03:17:44,627 INFO L125 PetriNetUnfolderBase]: For 104797/104803 co-relation queries the response was YES. [2024-06-28 03:17:44,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23532 conditions, 3717 events. 2412/3717 cut-off events. For 104797/104803 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18675 event pairs, 829 based on Foata normal form. 6/3718 useless extension candidates. Maximal degree in co-relation 23487. Up to 3423 conditions per place. [2024-06-28 03:17:44,649 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 98 selfloop transitions, 42 changer transitions 0/145 dead transitions. [2024-06-28 03:17:44,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 145 transitions, 1662 flow [2024-06-28 03:17:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:17:44,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-28 03:17:44,652 INFO L175 Difference]: Start difference. First operand has 109 places, 121 transitions, 1232 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:17:44,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 145 transitions, 1662 flow [2024-06-28 03:17:44,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 145 transitions, 1520 flow, removed 52 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:44,712 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 1182 flow [2024-06-28 03:17:44,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1182, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2024-06-28 03:17:44,713 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 68 predicate places. [2024-06-28 03:17:44,713 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 1182 flow [2024-06-28 03:17:44,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:44,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:44,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:44,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:17:44,714 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 03:17:44,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:44,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1635626016, now seen corresponding path program 5 times [2024-06-28 03:17:44,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:44,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313729634] [2024-06-28 03:17:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:45,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:45,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313729634] [2024-06-28 03:17:45,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313729634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:45,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:45,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:45,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959027858] [2024-06-28 03:17:45,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:45,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:45,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:45,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 1182 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:45,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:45,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:45,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:46,442 INFO L124 PetriNetUnfolderBase]: 2434/3750 cut-off events. [2024-06-28 03:17:46,442 INFO L125 PetriNetUnfolderBase]: For 112036/112042 co-relation queries the response was YES. [2024-06-28 03:17:46,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24001 conditions, 3750 events. 2434/3750 cut-off events. For 112036/112042 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18848 event pairs, 833 based on Foata normal form. 8/3751 useless extension candidates. Maximal degree in co-relation 23954. Up to 3269 conditions per place. [2024-06-28 03:17:46,468 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 92 selfloop transitions, 57 changer transitions 0/154 dead transitions. [2024-06-28 03:17:46,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 154 transitions, 1814 flow [2024-06-28 03:17:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:17:46,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:17:46,470 INFO L175 Difference]: Start difference. First operand has 113 places, 121 transitions, 1182 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:17:46,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 154 transitions, 1814 flow [2024-06-28 03:17:46,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 1732 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:46,525 INFO L231 Difference]: Finished difference. Result has 115 places, 124 transitions, 1288 flow [2024-06-28 03:17:46,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1288, PETRI_PLACES=115, PETRI_TRANSITIONS=124} [2024-06-28 03:17:46,526 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-28 03:17:46,526 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 124 transitions, 1288 flow [2024-06-28 03:17:46,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:46,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:46,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:46,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:17:46,526 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 03:17:46,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1635631596, now seen corresponding path program 6 times [2024-06-28 03:17:46,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:46,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457891287] [2024-06-28 03:17:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:46,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:47,528 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 03:17:47,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:47,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457891287] [2024-06-28 03:17:47,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457891287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:47,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:47,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:47,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952840690] [2024-06-28 03:17:47,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:47,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:47,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:47,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:47,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 124 transitions, 1288 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:47,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:47,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:47,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:48,208 INFO L124 PetriNetUnfolderBase]: 2424/3736 cut-off events. [2024-06-28 03:17:48,208 INFO L125 PetriNetUnfolderBase]: For 118532/118538 co-relation queries the response was YES. [2024-06-28 03:17:48,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24236 conditions, 3736 events. 2424/3736 cut-off events. For 118532/118538 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18769 event pairs, 831 based on Foata normal form. 8/3737 useless extension candidates. Maximal degree in co-relation 24188. Up to 3261 conditions per place. [2024-06-28 03:17:48,229 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 92 selfloop transitions, 56 changer transitions 0/153 dead transitions. [2024-06-28 03:17:48,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 153 transitions, 1762 flow [2024-06-28 03:17:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:17:48,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:17:48,230 INFO L175 Difference]: Start difference. First operand has 115 places, 124 transitions, 1288 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:17:48,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 153 transitions, 1762 flow [2024-06-28 03:17:48,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 153 transitions, 1526 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:48,290 INFO L231 Difference]: Finished difference. Result has 117 places, 124 transitions, 1172 flow [2024-06-28 03:17:48,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1172, PETRI_PLACES=117, PETRI_TRANSITIONS=124} [2024-06-28 03:17:48,291 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 72 predicate places. [2024-06-28 03:17:48,291 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 124 transitions, 1172 flow [2024-06-28 03:17:48,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:48,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:48,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:48,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:17:48,291 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 03:17:48,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1635631813, now seen corresponding path program 4 times [2024-06-28 03:17:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:48,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904798821] [2024-06-28 03:17:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:49,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:49,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904798821] [2024-06-28 03:17:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904798821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:49,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:49,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:49,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123823330] [2024-06-28 03:17:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:49,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:49,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:49,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:49,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:49,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:49,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 124 transitions, 1172 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:49,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:49,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:49,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:50,049 INFO L124 PetriNetUnfolderBase]: 2419/3728 cut-off events. [2024-06-28 03:17:50,049 INFO L125 PetriNetUnfolderBase]: For 120627/120633 co-relation queries the response was YES. [2024-06-28 03:17:50,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23723 conditions, 3728 events. 2419/3728 cut-off events. For 120627/120633 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 18746 event pairs, 827 based on Foata normal form. 6/3729 useless extension candidates. Maximal degree in co-relation 23675. Up to 3436 conditions per place. [2024-06-28 03:17:50,073 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 100 selfloop transitions, 41 changer transitions 0/146 dead transitions. [2024-06-28 03:17:50,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 146 transitions, 1510 flow [2024-06-28 03:17:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:17:50,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-28 03:17:50,082 INFO L175 Difference]: Start difference. First operand has 117 places, 124 transitions, 1172 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:17:50,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 146 transitions, 1510 flow [2024-06-28 03:17:50,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 146 transitions, 1322 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:50,142 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 1074 flow [2024-06-28 03:17:50,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1074, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2024-06-28 03:17:50,142 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2024-06-28 03:17:50,142 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 1074 flow [2024-06-28 03:17:50,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 03:17:50,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:50,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:50,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:17:50,143 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 03:17:50,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:50,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1643260293, now seen corresponding path program 1 times [2024-06-28 03:17:50,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:50,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426908948] [2024-06-28 03:17:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:50,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:51,426 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 03:17:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426908948] [2024-06-28 03:17:51,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426908948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:51,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:51,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:51,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609657021] [2024-06-28 03:17:51,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:51,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:51,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:51,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:51,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 1074 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:17:51,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:51,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:51,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:52,064 INFO L124 PetriNetUnfolderBase]: 2436/3855 cut-off events. [2024-06-28 03:17:52,064 INFO L125 PetriNetUnfolderBase]: For 124999/124999 co-relation queries the response was YES. [2024-06-28 03:17:52,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23731 conditions, 3855 events. 2436/3855 cut-off events. For 124999/124999 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 19894 event pairs, 813 based on Foata normal form. 2/3836 useless extension candidates. Maximal degree in co-relation 23682. Up to 3546 conditions per place. [2024-06-28 03:17:52,089 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 130 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2024-06-28 03:17:52,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 156 transitions, 1515 flow [2024-06-28 03:17:52,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:17:52,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-28 03:17:52,090 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 1074 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:17:52,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 156 transitions, 1515 flow [2024-06-28 03:17:52,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 156 transitions, 1385 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:52,156 INFO L231 Difference]: Finished difference. Result has 119 places, 130 transitions, 1079 flow [2024-06-28 03:17:52,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1079, PETRI_PLACES=119, PETRI_TRANSITIONS=130} [2024-06-28 03:17:52,156 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 74 predicate places. [2024-06-28 03:17:52,156 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 130 transitions, 1079 flow [2024-06-28 03:17:52,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:17:52,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:52,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:52,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:17:52,157 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:52,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1069805811, now seen corresponding path program 1 times [2024-06-28 03:17:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:52,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648705226] [2024-06-28 03:17:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:52,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648705226] [2024-06-28 03:17:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648705226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:52,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686026790] [2024-06-28 03:17:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:52,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:52,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:52,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 1079 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 03:17:52,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:52,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:52,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:53,607 INFO L124 PetriNetUnfolderBase]: 2629/4082 cut-off events. [2024-06-28 03:17:53,608 INFO L125 PetriNetUnfolderBase]: For 154225/154225 co-relation queries the response was YES. [2024-06-28 03:17:53,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26509 conditions, 4082 events. 2629/4082 cut-off events. For 154225/154225 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20770 event pairs, 919 based on Foata normal form. 1/4080 useless extension candidates. Maximal degree in co-relation 26458. Up to 3814 conditions per place. [2024-06-28 03:17:53,630 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 113 selfloop transitions, 12 changer transitions 0/141 dead transitions. [2024-06-28 03:17:53,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 141 transitions, 1377 flow [2024-06-28 03:17:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 03:17:53,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:17:53,631 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 1079 flow. Second operand 6 states and 102 transitions. [2024-06-28 03:17:53,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 141 transitions, 1377 flow [2024-06-28 03:17:53,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 141 transitions, 1295 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:53,713 INFO L231 Difference]: Finished difference. Result has 119 places, 133 transitions, 1061 flow [2024-06-28 03:17:53,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1061, PETRI_PLACES=119, PETRI_TRANSITIONS=133} [2024-06-28 03:17:53,714 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 74 predicate places. [2024-06-28 03:17:53,714 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 133 transitions, 1061 flow [2024-06-28 03:17:53,714 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 03:17:53,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:53,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:53,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:17:53,715 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 03:17:53,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash 390929687, now seen corresponding path program 1 times [2024-06-28 03:17:53,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:53,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410141249] [2024-06-28 03:17:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:53,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:54,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:54,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410141249] [2024-06-28 03:17:54,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410141249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:54,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:54,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:54,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894727183] [2024-06-28 03:17:54,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:54,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:54,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:54,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:55,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:55,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 133 transitions, 1061 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 03:17:55,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:55,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:55,874 INFO L124 PetriNetUnfolderBase]: 2629/4081 cut-off events. [2024-06-28 03:17:55,874 INFO L125 PetriNetUnfolderBase]: For 182775/182785 co-relation queries the response was YES. [2024-06-28 03:17:55,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28490 conditions, 4081 events. 2629/4081 cut-off events. For 182775/182785 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 21348 event pairs, 704 based on Foata normal form. 4/4076 useless extension candidates. Maximal degree in co-relation 28438. Up to 3680 conditions per place. [2024-06-28 03:17:55,905 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 126 selfloop transitions, 19 changer transitions 0/164 dead transitions. [2024-06-28 03:17:55,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 164 transitions, 1481 flow [2024-06-28 03:17:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:17:55,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 03:17:55,906 INFO L175 Difference]: Start difference. First operand has 119 places, 133 transitions, 1061 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:17:55,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 164 transitions, 1481 flow [2024-06-28 03:17:55,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 164 transitions, 1439 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:55,971 INFO L231 Difference]: Finished difference. Result has 123 places, 135 transitions, 1122 flow [2024-06-28 03:17:55,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1122, PETRI_PLACES=123, PETRI_TRANSITIONS=135} [2024-06-28 03:17:55,972 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 78 predicate places. [2024-06-28 03:17:55,972 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 135 transitions, 1122 flow [2024-06-28 03:17:55,972 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 03:17:55,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:55,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:55,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:17:55,973 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 03:17:55,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash 390990261, now seen corresponding path program 1 times [2024-06-28 03:17:55,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:55,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991874419] [2024-06-28 03:17:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:55,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991874419] [2024-06-28 03:17:57,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991874419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:57,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:57,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:57,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454958273] [2024-06-28 03:17:57,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:57,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:57,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:57,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:57,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:57,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:17:57,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 135 transitions, 1122 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:17:57,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:57,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:17:57,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:58,224 INFO L124 PetriNetUnfolderBase]: 2877/4383 cut-off events. [2024-06-28 03:17:58,225 INFO L125 PetriNetUnfolderBase]: For 195967/195977 co-relation queries the response was YES. [2024-06-28 03:17:58,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30776 conditions, 4383 events. 2877/4383 cut-off events. For 195967/195977 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22276 event pairs, 900 based on Foata normal form. 2/4370 useless extension candidates. Maximal degree in co-relation 30723. Up to 4050 conditions per place. [2024-06-28 03:17:58,252 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 142 selfloop transitions, 36 changer transitions 0/185 dead transitions. [2024-06-28 03:17:58,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 185 transitions, 1799 flow [2024-06-28 03:17:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:58,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:17:58,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:17:58,253 INFO L175 Difference]: Start difference. First operand has 123 places, 135 transitions, 1122 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:17:58,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 185 transitions, 1799 flow [2024-06-28 03:17:58,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 185 transitions, 1696 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:58,363 INFO L231 Difference]: Finished difference. Result has 129 places, 157 transitions, 1387 flow [2024-06-28 03:17:58,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1387, PETRI_PLACES=129, PETRI_TRANSITIONS=157} [2024-06-28 03:17:58,363 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 84 predicate places. [2024-06-28 03:17:58,363 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 157 transitions, 1387 flow [2024-06-28 03:17:58,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:17:58,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:58,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:58,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:17:58,364 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 03:17:58,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:58,364 INFO L85 PathProgramCache]: Analyzing trace with hash 622008621, now seen corresponding path program 2 times [2024-06-28 03:17:58,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:58,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139488999] [2024-06-28 03:17:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:59,597 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 03:17:59,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:59,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139488999] [2024-06-28 03:17:59,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139488999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:59,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:59,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:59,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464972947] [2024-06-28 03:17:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:59,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:59,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:59,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:59,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 157 transitions, 1387 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 03:17:59,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:59,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:59,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:00,528 INFO L124 PetriNetUnfolderBase]: 2737/4256 cut-off events. [2024-06-28 03:18:00,528 INFO L125 PetriNetUnfolderBase]: For 209567/209577 co-relation queries the response was YES. [2024-06-28 03:18:00,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30481 conditions, 4256 events. 2737/4256 cut-off events. For 209567/209577 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22331 event pairs, 861 based on Foata normal form. 4/4251 useless extension candidates. Maximal degree in co-relation 30424. Up to 3781 conditions per place. [2024-06-28 03:18:00,559 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 128 selfloop transitions, 38 changer transitions 0/187 dead transitions. [2024-06-28 03:18:00,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 187 transitions, 1851 flow [2024-06-28 03:18:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:18:00,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:18:00,560 INFO L175 Difference]: Start difference. First operand has 129 places, 157 transitions, 1387 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:18:00,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 187 transitions, 1851 flow [2024-06-28 03:18:00,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 187 transitions, 1783 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 03:18:00,650 INFO L231 Difference]: Finished difference. Result has 135 places, 159 transitions, 1467 flow [2024-06-28 03:18:00,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1467, PETRI_PLACES=135, PETRI_TRANSITIONS=159} [2024-06-28 03:18:00,651 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2024-06-28 03:18:00,651 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 159 transitions, 1467 flow [2024-06-28 03:18:00,651 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 03:18:00,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:00,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:00,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:18:00,652 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 03:18:00,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash 624810091, now seen corresponding path program 1 times [2024-06-28 03:18:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021514390] [2024-06-28 03:18:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:01,632 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 03:18:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:01,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021514390] [2024-06-28 03:18:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021514390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:01,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:01,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265119579] [2024-06-28 03:18:01,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:01,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:01,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:01,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:01,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:01,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 159 transitions, 1467 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:01,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:01,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:01,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:02,479 INFO L124 PetriNetUnfolderBase]: 2916/4452 cut-off events. [2024-06-28 03:18:02,479 INFO L125 PetriNetUnfolderBase]: For 225449/225459 co-relation queries the response was YES. [2024-06-28 03:18:02,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32271 conditions, 4452 events. 2916/4452 cut-off events. For 225449/225459 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22808 event pairs, 871 based on Foata normal form. 4/4447 useless extension candidates. Maximal degree in co-relation 32212. Up to 4053 conditions per place. [2024-06-28 03:18:02,514 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 149 selfloop transitions, 40 changer transitions 0/196 dead transitions. [2024-06-28 03:18:02,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 196 transitions, 2008 flow [2024-06-28 03:18:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:18:02,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-28 03:18:02,515 INFO L175 Difference]: Start difference. First operand has 135 places, 159 transitions, 1467 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:18:02,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 196 transitions, 2008 flow [2024-06-28 03:18:02,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 196 transitions, 1884 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:02,606 INFO L231 Difference]: Finished difference. Result has 138 places, 162 transitions, 1504 flow [2024-06-28 03:18:02,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1504, PETRI_PLACES=138, PETRI_TRANSITIONS=162} [2024-06-28 03:18:02,607 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 93 predicate places. [2024-06-28 03:18:02,607 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 162 transitions, 1504 flow [2024-06-28 03:18:02,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:02,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:02,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:02,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:18:02,608 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:02,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:02,608 INFO L85 PathProgramCache]: Analyzing trace with hash 740096301, now seen corresponding path program 3 times [2024-06-28 03:18:02,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:02,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642243114] [2024-06-28 03:18:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:02,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:04,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:04,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642243114] [2024-06-28 03:18:04,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642243114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:04,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:04,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:04,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248746612] [2024-06-28 03:18:04,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:04,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:04,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:04,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:04,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:04,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:04,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 162 transitions, 1504 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 03:18:04,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:04,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:04,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:04,955 INFO L124 PetriNetUnfolderBase]: 2775/4321 cut-off events. [2024-06-28 03:18:04,955 INFO L125 PetriNetUnfolderBase]: For 239504/239514 co-relation queries the response was YES. [2024-06-28 03:18:04,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32352 conditions, 4321 events. 2775/4321 cut-off events. For 239504/239514 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22733 event pairs, 835 based on Foata normal form. 4/4316 useless extension candidates. Maximal degree in co-relation 32292. Up to 3810 conditions per place. [2024-06-28 03:18:04,989 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 129 selfloop transitions, 41 changer transitions 0/191 dead transitions. [2024-06-28 03:18:04,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 191 transitions, 1980 flow [2024-06-28 03:18:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:18:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:18:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:18:04,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:18:04,991 INFO L175 Difference]: Start difference. First operand has 138 places, 162 transitions, 1504 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:18:04,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 191 transitions, 1980 flow [2024-06-28 03:18:05,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 191 transitions, 1845 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:05,097 INFO L231 Difference]: Finished difference. Result has 139 places, 164 transitions, 1526 flow [2024-06-28 03:18:05,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1526, PETRI_PLACES=139, PETRI_TRANSITIONS=164} [2024-06-28 03:18:05,098 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-28 03:18:05,098 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 164 transitions, 1526 flow [2024-06-28 03:18:05,098 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 03:18:05,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:05,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:05,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:18:05,098 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 03:18:05,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:05,098 INFO L85 PathProgramCache]: Analyzing trace with hash 740101261, now seen corresponding path program 2 times [2024-06-28 03:18:05,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:05,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483539623] [2024-06-28 03:18:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:06,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:06,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483539623] [2024-06-28 03:18:06,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483539623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:06,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:06,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996917141] [2024-06-28 03:18:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:06,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:06,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:06,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 164 transitions, 1526 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:06,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:06,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:06,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:07,258 INFO L124 PetriNetUnfolderBase]: 3104/4737 cut-off events. [2024-06-28 03:18:07,258 INFO L125 PetriNetUnfolderBase]: For 270020/270020 co-relation queries the response was YES. [2024-06-28 03:18:07,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36258 conditions, 4737 events. 3104/4737 cut-off events. For 270020/270020 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24431 event pairs, 828 based on Foata normal form. 4/4735 useless extension candidates. Maximal degree in co-relation 36197. Up to 4033 conditions per place. [2024-06-28 03:18:07,292 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 141 selfloop transitions, 64 changer transitions 0/212 dead transitions. [2024-06-28 03:18:07,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 212 transitions, 2542 flow [2024-06-28 03:18:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:18:07,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 03:18:07,294 INFO L175 Difference]: Start difference. First operand has 139 places, 164 transitions, 1526 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:18:07,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 212 transitions, 2542 flow [2024-06-28 03:18:07,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 212 transitions, 2403 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:07,392 INFO L231 Difference]: Finished difference. Result has 144 places, 175 transitions, 1820 flow [2024-06-28 03:18:07,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1820, PETRI_PLACES=144, PETRI_TRANSITIONS=175} [2024-06-28 03:18:07,393 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 99 predicate places. [2024-06-28 03:18:07,393 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 175 transitions, 1820 flow [2024-06-28 03:18:07,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:07,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:07,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:07,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:18:07,393 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 03:18:07,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash 740280751, now seen corresponding path program 3 times [2024-06-28 03:18:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:07,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201691645] [2024-06-28 03:18:07,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:07,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:08,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:08,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201691645] [2024-06-28 03:18:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201691645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:08,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:08,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482742696] [2024-06-28 03:18:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:08,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:08,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:08,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:08,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:08,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 175 transitions, 1820 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:08,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:08,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:08,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:09,390 INFO L124 PetriNetUnfolderBase]: 3122/4775 cut-off events. [2024-06-28 03:18:09,391 INFO L125 PetriNetUnfolderBase]: For 290900/290900 co-relation queries the response was YES. [2024-06-28 03:18:09,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38118 conditions, 4775 events. 3122/4775 cut-off events. For 290900/290900 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24758 event pairs, 806 based on Foata normal form. 8/4777 useless extension candidates. Maximal degree in co-relation 38054. Up to 4042 conditions per place. [2024-06-28 03:18:09,429 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 134 selfloop transitions, 74 changer transitions 0/215 dead transitions. [2024-06-28 03:18:09,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 215 transitions, 2702 flow [2024-06-28 03:18:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:18:09,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-28 03:18:09,430 INFO L175 Difference]: Start difference. First operand has 144 places, 175 transitions, 1820 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:18:09,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 215 transitions, 2702 flow [2024-06-28 03:18:09,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 215 transitions, 2594 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:09,637 INFO L231 Difference]: Finished difference. Result has 149 places, 178 transitions, 1956 flow [2024-06-28 03:18:09,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1956, PETRI_PLACES=149, PETRI_TRANSITIONS=178} [2024-06-28 03:18:09,638 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 104 predicate places. [2024-06-28 03:18:09,638 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 178 transitions, 1956 flow [2024-06-28 03:18:09,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:09,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:09,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:09,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:18:09,639 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 03:18:09,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash 509255757, now seen corresponding path program 4 times [2024-06-28 03:18:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:09,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934240151] [2024-06-28 03:18:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:09,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:10,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934240151] [2024-06-28 03:18:10,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934240151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:10,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:10,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:10,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412893626] [2024-06-28 03:18:10,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:10,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:10,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:10,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:10,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:10,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 178 transitions, 1956 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:10,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:10,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:10,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:11,703 INFO L124 PetriNetUnfolderBase]: 3112/4761 cut-off events. [2024-06-28 03:18:11,703 INFO L125 PetriNetUnfolderBase]: For 299133/299133 co-relation queries the response was YES. [2024-06-28 03:18:11,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38488 conditions, 4761 events. 3112/4761 cut-off events. For 299133/299133 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24651 event pairs, 809 based on Foata normal form. 4/4759 useless extension candidates. Maximal degree in co-relation 38422. Up to 4038 conditions per place. [2024-06-28 03:18:11,743 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 136 selfloop transitions, 70 changer transitions 0/213 dead transitions. [2024-06-28 03:18:11,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 213 transitions, 2614 flow [2024-06-28 03:18:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:18:11,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 03:18:11,745 INFO L175 Difference]: Start difference. First operand has 149 places, 178 transitions, 1956 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:18:11,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 213 transitions, 2614 flow [2024-06-28 03:18:11,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 213 transitions, 2354 flow, removed 69 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:11,914 INFO L231 Difference]: Finished difference. Result has 152 places, 178 transitions, 1844 flow [2024-06-28 03:18:11,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1844, PETRI_PLACES=152, PETRI_TRANSITIONS=178} [2024-06-28 03:18:11,914 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 107 predicate places. [2024-06-28 03:18:11,915 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 178 transitions, 1844 flow [2024-06-28 03:18:11,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:11,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:11,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:11,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:18:11,915 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:11,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1223897630, now seen corresponding path program 1 times [2024-06-28 03:18:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205738897] [2024-06-28 03:18:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:11,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:12,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205738897] [2024-06-28 03:18:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205738897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:12,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:12,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:18:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129695485] [2024-06-28 03:18:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:12,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:18:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:18:12,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:18:12,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:12,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 178 transitions, 1844 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 03:18:12,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:12,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:12,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:13,543 INFO L124 PetriNetUnfolderBase]: 3173/4839 cut-off events. [2024-06-28 03:18:13,543 INFO L125 PetriNetUnfolderBase]: For 309636/309641 co-relation queries the response was YES. [2024-06-28 03:18:13,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38487 conditions, 4839 events. 3173/4839 cut-off events. For 309636/309641 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24651 event pairs, 925 based on Foata normal form. 1/4830 useless extension candidates. Maximal degree in co-relation 38420. Up to 4515 conditions per place. [2024-06-28 03:18:13,586 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 158 selfloop transitions, 21 changer transitions 0/198 dead transitions. [2024-06-28 03:18:13,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 198 transitions, 2384 flow [2024-06-28 03:18:13,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:18:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:18:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 03:18:13,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 03:18:13,587 INFO L175 Difference]: Start difference. First operand has 152 places, 178 transitions, 1844 flow. Second operand 6 states and 111 transitions. [2024-06-28 03:18:13,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 198 transitions, 2384 flow [2024-06-28 03:18:13,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 198 transitions, 2260 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:13,766 INFO L231 Difference]: Finished difference. Result has 151 places, 184 transitions, 1847 flow [2024-06-28 03:18:13,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1847, PETRI_PLACES=151, PETRI_TRANSITIONS=184} [2024-06-28 03:18:13,766 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 106 predicate places. [2024-06-28 03:18:13,766 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 184 transitions, 1847 flow [2024-06-28 03:18:13,767 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 03:18:13,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:13,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:13,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:18:13,767 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 03:18:13,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash -606888579, now seen corresponding path program 5 times [2024-06-28 03:18:13,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:13,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434549672] [2024-06-28 03:18:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:14,895 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 03:18:14,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:14,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434549672] [2024-06-28 03:18:14,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434549672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:14,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:14,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632002256] [2024-06-28 03:18:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:14,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:14,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:14,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:14,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 184 transitions, 1847 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:14,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:14,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:14,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:15,736 INFO L124 PetriNetUnfolderBase]: 3249/4945 cut-off events. [2024-06-28 03:18:15,736 INFO L125 PetriNetUnfolderBase]: For 332852/332858 co-relation queries the response was YES. [2024-06-28 03:18:15,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40362 conditions, 4945 events. 3249/4945 cut-off events. For 332852/332858 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 25634 event pairs, 776 based on Foata normal form. 16/4942 useless extension candidates. Maximal degree in co-relation 40294. Up to 3825 conditions per place. [2024-06-28 03:18:15,778 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 114 selfloop transitions, 113 changer transitions 0/234 dead transitions. [2024-06-28 03:18:15,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 234 transitions, 3127 flow [2024-06-28 03:18:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:18:15,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 03:18:15,779 INFO L175 Difference]: Start difference. First operand has 151 places, 184 transitions, 1847 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:18:15,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 234 transitions, 3127 flow [2024-06-28 03:18:15,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 234 transitions, 3086 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 03:18:15,961 INFO L231 Difference]: Finished difference. Result has 159 places, 195 transitions, 2318 flow [2024-06-28 03:18:15,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2318, PETRI_PLACES=159, PETRI_TRANSITIONS=195} [2024-06-28 03:18:15,961 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2024-06-28 03:18:15,961 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 195 transitions, 2318 flow [2024-06-28 03:18:15,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:15,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:15,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:15,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:18:15,962 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 03:18:15,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash -828770769, now seen corresponding path program 6 times [2024-06-28 03:18:15,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:15,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831592856] [2024-06-28 03:18:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:17,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:17,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831592856] [2024-06-28 03:18:17,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831592856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:17,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:17,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675494277] [2024-06-28 03:18:17,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:17,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:17,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:17,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 195 transitions, 2318 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:17,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:17,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:17,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:17,895 INFO L124 PetriNetUnfolderBase]: 3358/5108 cut-off events. [2024-06-28 03:18:17,895 INFO L125 PetriNetUnfolderBase]: For 362955/362971 co-relation queries the response was YES. [2024-06-28 03:18:17,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44165 conditions, 5108 events. 3358/5108 cut-off events. For 362955/362971 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 26710 event pairs, 852 based on Foata normal form. 8/5094 useless extension candidates. Maximal degree in co-relation 44094. Up to 3898 conditions per place. [2024-06-28 03:18:17,940 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 123 selfloop transitions, 115 changer transitions 0/245 dead transitions. [2024-06-28 03:18:17,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 245 transitions, 3666 flow [2024-06-28 03:18:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 03:18:17,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 03:18:17,941 INFO L175 Difference]: Start difference. First operand has 159 places, 195 transitions, 2318 flow. Second operand 9 states and 182 transitions. [2024-06-28 03:18:17,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 245 transitions, 3666 flow [2024-06-28 03:18:18,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 245 transitions, 3431 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:18,203 INFO L231 Difference]: Finished difference. Result has 166 places, 206 transitions, 2650 flow [2024-06-28 03:18:18,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2650, PETRI_PLACES=166, PETRI_TRANSITIONS=206} [2024-06-28 03:18:18,204 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 121 predicate places. [2024-06-28 03:18:18,204 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 206 transitions, 2650 flow [2024-06-28 03:18:18,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:18,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:18,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:18,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:18:18,204 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 03:18:18,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash -607119219, now seen corresponding path program 7 times [2024-06-28 03:18:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54461558] [2024-06-28 03:18:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:19,231 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 03:18:19,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:19,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54461558] [2024-06-28 03:18:19,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54461558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:19,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:19,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:19,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138693210] [2024-06-28 03:18:19,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:19,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:19,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:19,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:19,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:19,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 206 transitions, 2650 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:19,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:19,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:19,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:20,200 INFO L124 PetriNetUnfolderBase]: 3369/5129 cut-off events. [2024-06-28 03:18:20,200 INFO L125 PetriNetUnfolderBase]: For 376836/376842 co-relation queries the response was YES. [2024-06-28 03:18:20,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44793 conditions, 5129 events. 3369/5129 cut-off events. For 376836/376842 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 26810 event pairs, 802 based on Foata normal form. 12/5123 useless extension candidates. Maximal degree in co-relation 44718. Up to 3907 conditions per place. [2024-06-28 03:18:20,245 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 127 selfloop transitions, 111 changer transitions 0/245 dead transitions. [2024-06-28 03:18:20,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 245 transitions, 3730 flow [2024-06-28 03:18:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:18:20,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 03:18:20,246 INFO L175 Difference]: Start difference. First operand has 166 places, 206 transitions, 2650 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:18:20,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 245 transitions, 3730 flow [2024-06-28 03:18:20,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 245 transitions, 3438 flow, removed 78 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:20,514 INFO L231 Difference]: Finished difference. Result has 171 places, 206 transitions, 2592 flow [2024-06-28 03:18:20,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2592, PETRI_PLACES=171, PETRI_TRANSITIONS=206} [2024-06-28 03:18:20,514 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 126 predicate places. [2024-06-28 03:18:20,514 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 206 transitions, 2592 flow [2024-06-28 03:18:20,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:20,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:20,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:20,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:18:20,515 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 03:18:20,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash -835026879, now seen corresponding path program 8 times [2024-06-28 03:18:20,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:20,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650729293] [2024-06-28 03:18:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:20,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:21,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:21,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650729293] [2024-06-28 03:18:21,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650729293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:21,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:21,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:21,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196806969] [2024-06-28 03:18:21,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:21,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:21,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:21,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:21,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 206 transitions, 2592 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:21,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:21,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:21,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:22,487 INFO L124 PetriNetUnfolderBase]: 3455/5263 cut-off events. [2024-06-28 03:18:22,487 INFO L125 PetriNetUnfolderBase]: For 397987/397993 co-relation queries the response was YES. [2024-06-28 03:18:22,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46004 conditions, 5263 events. 3455/5263 cut-off events. For 397987/397993 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 27732 event pairs, 828 based on Foata normal form. 8/5253 useless extension candidates. Maximal degree in co-relation 45928. Up to 3956 conditions per place. [2024-06-28 03:18:22,534 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 137 selfloop transitions, 111 changer transitions 0/255 dead transitions. [2024-06-28 03:18:22,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 255 transitions, 4075 flow [2024-06-28 03:18:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 03:18:22,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 03:18:22,536 INFO L175 Difference]: Start difference. First operand has 171 places, 206 transitions, 2592 flow. Second operand 9 states and 187 transitions. [2024-06-28 03:18:22,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 255 transitions, 4075 flow [2024-06-28 03:18:22,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 255 transitions, 3884 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:22,790 INFO L231 Difference]: Finished difference. Result has 175 places, 214 transitions, 2874 flow [2024-06-28 03:18:22,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2874, PETRI_PLACES=175, PETRI_TRANSITIONS=214} [2024-06-28 03:18:22,790 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 130 predicate places. [2024-06-28 03:18:22,790 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 214 transitions, 2874 flow [2024-06-28 03:18:22,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:22,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:22,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:22,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:18:22,795 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 03:18:22,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash -835020369, now seen corresponding path program 9 times [2024-06-28 03:18:22,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:22,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679201268] [2024-06-28 03:18:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:23,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679201268] [2024-06-28 03:18:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679201268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:23,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107647214] [2024-06-28 03:18:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:23,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:23,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:23,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:24,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:24,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 214 transitions, 2874 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:24,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:24,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:24,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:24,847 INFO L124 PetriNetUnfolderBase]: 3416/5206 cut-off events. [2024-06-28 03:18:24,847 INFO L125 PetriNetUnfolderBase]: For 417738/417754 co-relation queries the response was YES. [2024-06-28 03:18:24,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46523 conditions, 5206 events. 3416/5206 cut-off events. For 417738/417754 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 27452 event pairs, 877 based on Foata normal form. 12/5196 useless extension candidates. Maximal degree in co-relation 46445. Up to 3939 conditions per place. [2024-06-28 03:18:24,992 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 135 selfloop transitions, 111 changer transitions 0/253 dead transitions. [2024-06-28 03:18:24,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 253 transitions, 3998 flow [2024-06-28 03:18:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 03:18:24,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 03:18:24,993 INFO L175 Difference]: Start difference. First operand has 175 places, 214 transitions, 2874 flow. Second operand 9 states and 184 transitions. [2024-06-28 03:18:24,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 253 transitions, 3998 flow [2024-06-28 03:18:25,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 3475 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:25,252 INFO L231 Difference]: Finished difference. Result has 176 places, 214 transitions, 2583 flow [2024-06-28 03:18:25,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2583, PETRI_PLACES=176, PETRI_TRANSITIONS=214} [2024-06-28 03:18:25,253 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 131 predicate places. [2024-06-28 03:18:25,253 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 214 transitions, 2583 flow [2024-06-28 03:18:25,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:25,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:25,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:25,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:18:25,253 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 03:18:25,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash -835204819, now seen corresponding path program 4 times [2024-06-28 03:18:25,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:25,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624789245] [2024-06-28 03:18:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:25,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:26,598 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 03:18:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624789245] [2024-06-28 03:18:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624789245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:26,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770560993] [2024-06-28 03:18:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:26,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:26,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:26,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:26,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 214 transitions, 2583 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 03:18:26,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:26,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:26,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:27,583 INFO L124 PetriNetUnfolderBase]: 3232/5002 cut-off events. [2024-06-28 03:18:27,583 INFO L125 PetriNetUnfolderBase]: For 420850/420871 co-relation queries the response was YES. [2024-06-28 03:18:27,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44686 conditions, 5002 events. 3232/5002 cut-off events. For 420850/420871 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 26868 event pairs, 797 based on Foata normal form. 8/4971 useless extension candidates. Maximal degree in co-relation 44608. Up to 4426 conditions per place. [2024-06-28 03:18:27,627 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 171 selfloop transitions, 50 changer transitions 0/242 dead transitions. [2024-06-28 03:18:27,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 242 transitions, 3166 flow [2024-06-28 03:18:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:18:27,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-28 03:18:27,629 INFO L175 Difference]: Start difference. First operand has 176 places, 214 transitions, 2583 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:18:27,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 242 transitions, 3166 flow [2024-06-28 03:18:27,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 242 transitions, 2897 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:27,888 INFO L231 Difference]: Finished difference. Result has 177 places, 216 transitions, 2495 flow [2024-06-28 03:18:27,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2495, PETRI_PLACES=177, PETRI_TRANSITIONS=216} [2024-06-28 03:18:27,888 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 132 predicate places. [2024-06-28 03:18:27,889 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 216 transitions, 2495 flow [2024-06-28 03:18:27,889 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 03:18:27,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:27,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:27,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:18:27,889 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 03:18:27,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash -835199859, now seen corresponding path program 10 times [2024-06-28 03:18:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:27,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122692141] [2024-06-28 03:18:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:27,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:28,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122692141] [2024-06-28 03:18:28,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122692141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:28,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:28,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:28,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620322930] [2024-06-28 03:18:28,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:28,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:28,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:28,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:29,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:29,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 216 transitions, 2495 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:29,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:29,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:29,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:29,878 INFO L124 PetriNetUnfolderBase]: 3423/5219 cut-off events. [2024-06-28 03:18:29,878 INFO L125 PetriNetUnfolderBase]: For 432854/432860 co-relation queries the response was YES. [2024-06-28 03:18:29,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45604 conditions, 5219 events. 3423/5219 cut-off events. For 432854/432860 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 27496 event pairs, 810 based on Foata normal form. 8/5209 useless extension candidates. Maximal degree in co-relation 45525. Up to 3936 conditions per place. [2024-06-28 03:18:29,924 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 126 selfloop transitions, 122 changer transitions 0/255 dead transitions. [2024-06-28 03:18:29,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 255 transitions, 3535 flow [2024-06-28 03:18:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:18:29,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 03:18:29,928 INFO L175 Difference]: Start difference. First operand has 177 places, 216 transitions, 2495 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:18:29,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 255 transitions, 3535 flow [2024-06-28 03:18:30,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 255 transitions, 3372 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:30,180 INFO L231 Difference]: Finished difference. Result has 179 places, 219 transitions, 2672 flow [2024-06-28 03:18:30,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2672, PETRI_PLACES=179, PETRI_TRANSITIONS=219} [2024-06-28 03:18:30,180 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 134 predicate places. [2024-06-28 03:18:30,181 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 219 transitions, 2672 flow [2024-06-28 03:18:30,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:30,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:30,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:30,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:18:30,181 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:30,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:30,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1195743740, now seen corresponding path program 2 times [2024-06-28 03:18:30,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:30,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561308032] [2024-06-28 03:18:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:30,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:30,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561308032] [2024-06-28 03:18:30,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561308032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:30,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:30,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:18:30,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065503796] [2024-06-28 03:18:30,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:30,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:18:30,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:30,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:18:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:18:30,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:30,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 219 transitions, 2672 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 03:18:30,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:30,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:30,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:31,781 INFO L124 PetriNetUnfolderBase]: 3519/5333 cut-off events. [2024-06-28 03:18:31,781 INFO L125 PetriNetUnfolderBase]: For 453537/453564 co-relation queries the response was YES. [2024-06-28 03:18:31,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46300 conditions, 5333 events. 3519/5333 cut-off events. For 453537/453564 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 27593 event pairs, 944 based on Foata normal form. 9/5311 useless extension candidates. Maximal degree in co-relation 46220. Up to 5025 conditions per place. [2024-06-28 03:18:31,831 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 188 selfloop transitions, 20 changer transitions 0/227 dead transitions. [2024-06-28 03:18:31,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 227 transitions, 3108 flow [2024-06-28 03:18:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:18:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:18:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 03:18:31,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 03:18:31,832 INFO L175 Difference]: Start difference. First operand has 179 places, 219 transitions, 2672 flow. Second operand 6 states and 104 transitions. [2024-06-28 03:18:31,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 227 transitions, 3108 flow [2024-06-28 03:18:32,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 227 transitions, 2811 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:32,112 INFO L231 Difference]: Finished difference. Result has 179 places, 219 transitions, 2421 flow [2024-06-28 03:18:32,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2421, PETRI_PLACES=179, PETRI_TRANSITIONS=219} [2024-06-28 03:18:32,113 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 134 predicate places. [2024-06-28 03:18:32,113 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 219 transitions, 2421 flow [2024-06-28 03:18:32,113 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 03:18:32,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:32,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:32,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:18:32,113 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 03:18:32,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:32,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1053990999, now seen corresponding path program 2 times [2024-06-28 03:18:32,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:32,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466458255] [2024-06-28 03:18:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:32,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466458255] [2024-06-28 03:18:33,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466458255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:33,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:33,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:33,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442052553] [2024-06-28 03:18:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:33,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:33,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:33,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:33,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:33,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:33,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 219 transitions, 2421 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:33,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:33,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:33,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:34,343 INFO L124 PetriNetUnfolderBase]: 3579/5449 cut-off events. [2024-06-28 03:18:34,343 INFO L125 PetriNetUnfolderBase]: For 464188/464192 co-relation queries the response was YES. [2024-06-28 03:18:34,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47567 conditions, 5449 events. 3579/5449 cut-off events. For 464188/464192 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 28742 event pairs, 867 based on Foata normal form. 6/5446 useless extension candidates. Maximal degree in co-relation 47486. Up to 5002 conditions per place. [2024-06-28 03:18:34,392 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 221 selfloop transitions, 67 changer transitions 0/295 dead transitions. [2024-06-28 03:18:34,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 295 transitions, 3680 flow [2024-06-28 03:18:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:34,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:18:34,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-28 03:18:34,394 INFO L175 Difference]: Start difference. First operand has 179 places, 219 transitions, 2421 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:18:34,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 295 transitions, 3680 flow [2024-06-28 03:18:34,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 295 transitions, 3614 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:34,780 INFO L231 Difference]: Finished difference. Result has 186 places, 262 transitions, 3196 flow [2024-06-28 03:18:34,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3196, PETRI_PLACES=186, PETRI_TRANSITIONS=262} [2024-06-28 03:18:34,781 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 141 predicate places. [2024-06-28 03:18:34,781 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 262 transitions, 3196 flow [2024-06-28 03:18:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:34,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:34,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:34,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:18:34,782 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 03:18:34,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:34,782 INFO L85 PathProgramCache]: Analyzing trace with hash -659987995, now seen corresponding path program 3 times [2024-06-28 03:18:34,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:34,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828483303] [2024-06-28 03:18:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:34,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:35,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:35,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828483303] [2024-06-28 03:18:35,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828483303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:35,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:35,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:35,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302785959] [2024-06-28 03:18:35,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:35,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:35,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:35,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:35,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:35,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:35,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 262 transitions, 3196 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:35,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:35,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:35,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:37,031 INFO L124 PetriNetUnfolderBase]: 3672/5584 cut-off events. [2024-06-28 03:18:37,031 INFO L125 PetriNetUnfolderBase]: For 482016/482024 co-relation queries the response was YES. [2024-06-28 03:18:37,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49513 conditions, 5584 events. 3672/5584 cut-off events. For 482016/482024 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29556 event pairs, 870 based on Foata normal form. 10/5585 useless extension candidates. Maximal degree in co-relation 49428. Up to 5095 conditions per place. [2024-06-28 03:18:37,080 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 233 selfloop transitions, 86 changer transitions 0/326 dead transitions. [2024-06-28 03:18:37,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 326 transitions, 4434 flow [2024-06-28 03:18:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:18:37,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:18:37,082 INFO L175 Difference]: Start difference. First operand has 186 places, 262 transitions, 3196 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:18:37,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 326 transitions, 4434 flow [2024-06-28 03:18:37,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 326 transitions, 4252 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 03:18:37,493 INFO L231 Difference]: Finished difference. Result has 193 places, 293 transitions, 3810 flow [2024-06-28 03:18:37,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3810, PETRI_PLACES=193, PETRI_TRANSITIONS=293} [2024-06-28 03:18:37,493 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 148 predicate places. [2024-06-28 03:18:37,494 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 293 transitions, 3810 flow [2024-06-28 03:18:37,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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 03:18:37,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:37,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:18:37,494 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:37,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1116153650, now seen corresponding path program 1 times [2024-06-28 03:18:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46220101] [2024-06-28 03:18:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:38,345 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 03:18:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:38,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46220101] [2024-06-28 03:18:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46220101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:38,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:38,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058044964] [2024-06-28 03:18:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:38,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:38,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:38,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:38,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:38,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 293 transitions, 3810 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 03:18:38,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:38,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:38,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:39,254 INFO L124 PetriNetUnfolderBase]: 3460/5370 cut-off events. [2024-06-28 03:18:39,254 INFO L125 PetriNetUnfolderBase]: For 441915/441930 co-relation queries the response was YES. [2024-06-28 03:18:39,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45608 conditions, 5370 events. 3460/5370 cut-off events. For 441915/441930 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 28869 event pairs, 939 based on Foata normal form. 1/5337 useless extension candidates. Maximal degree in co-relation 45521. Up to 4911 conditions per place. [2024-06-28 03:18:39,308 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 265 selfloop transitions, 18 changer transitions 0/311 dead transitions. [2024-06-28 03:18:39,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 311 transitions, 4598 flow [2024-06-28 03:18:39,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:18:39,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-28 03:18:39,310 INFO L175 Difference]: Start difference. First operand has 193 places, 293 transitions, 3810 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:18:39,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 311 transitions, 4598 flow [2024-06-28 03:18:39,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 311 transitions, 4282 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:39,711 INFO L231 Difference]: Finished difference. Result has 191 places, 299 transitions, 3630 flow [2024-06-28 03:18:39,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3494, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3630, PETRI_PLACES=191, PETRI_TRANSITIONS=299} [2024-06-28 03:18:39,711 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 146 predicate places. [2024-06-28 03:18:39,712 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 299 transitions, 3630 flow [2024-06-28 03:18:39,712 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 03:18:39,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:39,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:39,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:18:39,712 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:39,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1158829490, now seen corresponding path program 2 times [2024-06-28 03:18:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:39,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913719779] [2024-06-28 03:18:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:39,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:40,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:40,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:40,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913719779] [2024-06-28 03:18:40,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913719779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:40,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:40,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:40,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280640361] [2024-06-28 03:18:40,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:40,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:40,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:40,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:40,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:40,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:40,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 299 transitions, 3630 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 03:18:40,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:40,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:40,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:41,484 INFO L124 PetriNetUnfolderBase]: 3457/5366 cut-off events. [2024-06-28 03:18:41,484 INFO L125 PetriNetUnfolderBase]: For 455128/455143 co-relation queries the response was YES. [2024-06-28 03:18:41,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45819 conditions, 5366 events. 3457/5366 cut-off events. For 455128/455143 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 28815 event pairs, 938 based on Foata normal form. 1/5333 useless extension candidates. Maximal degree in co-relation 45732. Up to 4920 conditions per place. [2024-06-28 03:18:41,540 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 267 selfloop transitions, 12 changer transitions 0/307 dead transitions. [2024-06-28 03:18:41,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 307 transitions, 4212 flow [2024-06-28 03:18:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:18:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:18:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 03:18:41,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-28 03:18:41,541 INFO L175 Difference]: Start difference. First operand has 191 places, 299 transitions, 3630 flow. Second operand 6 states and 107 transitions. [2024-06-28 03:18:41,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 307 transitions, 4212 flow [2024-06-28 03:18:42,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 307 transitions, 4129 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 03:18:42,015 INFO L231 Difference]: Finished difference. Result has 194 places, 299 transitions, 3577 flow [2024-06-28 03:18:42,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3547, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3577, PETRI_PLACES=194, PETRI_TRANSITIONS=299} [2024-06-28 03:18:42,015 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 149 predicate places. [2024-06-28 03:18:42,016 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 299 transitions, 3577 flow [2024-06-28 03:18:42,016 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 03:18:42,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:42,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:42,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:18:42,016 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:42,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash -598537179, now seen corresponding path program 1 times [2024-06-28 03:18:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989726757] [2024-06-28 03:18:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989726757] [2024-06-28 03:18:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989726757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:43,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:43,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107304953] [2024-06-28 03:18:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:43,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:43,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:43,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 299 transitions, 3577 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 03:18:43,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:43,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:43,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:44,621 INFO L124 PetriNetUnfolderBase]: 3625/5543 cut-off events. [2024-06-28 03:18:44,621 INFO L125 PetriNetUnfolderBase]: For 469768/469768 co-relation queries the response was YES. [2024-06-28 03:18:44,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46852 conditions, 5543 events. 3625/5543 cut-off events. For 469768/469768 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 29065 event pairs, 978 based on Foata normal form. 4/5534 useless extension candidates. Maximal degree in co-relation 46763. Up to 5213 conditions per place. [2024-06-28 03:18:44,675 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 303 selfloop transitions, 23 changer transitions 0/332 dead transitions. [2024-06-28 03:18:44,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 332 transitions, 4405 flow [2024-06-28 03:18:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 03:18:44,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931818181818182 [2024-06-28 03:18:44,677 INFO L175 Difference]: Start difference. First operand has 194 places, 299 transitions, 3577 flow. Second operand 10 states and 173 transitions. [2024-06-28 03:18:44,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 332 transitions, 4405 flow [2024-06-28 03:18:45,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 332 transitions, 4373 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:45,158 INFO L231 Difference]: Finished difference. Result has 199 places, 301 transitions, 3672 flow [2024-06-28 03:18:45,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3545, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3672, PETRI_PLACES=199, PETRI_TRANSITIONS=301} [2024-06-28 03:18:45,158 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 154 predicate places. [2024-06-28 03:18:45,158 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 301 transitions, 3672 flow [2024-06-28 03:18:45,159 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 03:18:45,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:45,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:45,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:18:45,159 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:45,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:45,160 INFO L85 PathProgramCache]: Analyzing trace with hash -78699368, now seen corresponding path program 1 times [2024-06-28 03:18:45,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:45,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146137648] [2024-06-28 03:18:45,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:45,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:45,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:45,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146137648] [2024-06-28 03:18:45,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146137648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:45,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:45,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:45,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794444318] [2024-06-28 03:18:45,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:45,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:45,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:45,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:45,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:46,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:46,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 301 transitions, 3672 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 03:18:46,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:46,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:46,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:47,236 INFO L124 PetriNetUnfolderBase]: 3645/5554 cut-off events. [2024-06-28 03:18:47,236 INFO L125 PetriNetUnfolderBase]: For 488999/489014 co-relation queries the response was YES. [2024-06-28 03:18:47,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47578 conditions, 5554 events. 3645/5554 cut-off events. For 488999/489014 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29024 event pairs, 996 based on Foata normal form. 2/5532 useless extension candidates. Maximal degree in co-relation 47488. Up to 5235 conditions per place. [2024-06-28 03:18:47,293 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 273 selfloop transitions, 15 changer transitions 0/314 dead transitions. [2024-06-28 03:18:47,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 314 transitions, 4314 flow [2024-06-28 03:18:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 03:18:47,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2024-06-28 03:18:47,294 INFO L175 Difference]: Start difference. First operand has 199 places, 301 transitions, 3672 flow. Second operand 7 states and 116 transitions. [2024-06-28 03:18:47,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 314 transitions, 4314 flow [2024-06-28 03:18:47,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 314 transitions, 4205 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:47,674 INFO L231 Difference]: Finished difference. Result has 198 places, 304 transitions, 3643 flow [2024-06-28 03:18:47,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3643, PETRI_PLACES=198, PETRI_TRANSITIONS=304} [2024-06-28 03:18:47,674 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 153 predicate places. [2024-06-28 03:18:47,674 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 304 transitions, 3643 flow [2024-06-28 03:18:47,675 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 03:18:47,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:47,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:47,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:18:47,675 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 03:18:47,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:47,675 INFO L85 PathProgramCache]: Analyzing trace with hash 948170097, now seen corresponding path program 1 times [2024-06-28 03:18:47,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:47,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178767009] [2024-06-28 03:18:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:47,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:48,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:48,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178767009] [2024-06-28 03:18:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178767009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:48,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:48,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:48,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018733965] [2024-06-28 03:18:48,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:48,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:48,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:48,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:48,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:49,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:49,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 304 transitions, 3643 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 03:18:49,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:49,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:49,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:50,259 INFO L124 PetriNetUnfolderBase]: 3680/5602 cut-off events. [2024-06-28 03:18:50,259 INFO L125 PetriNetUnfolderBase]: For 564662/564666 co-relation queries the response was YES. [2024-06-28 03:18:50,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51917 conditions, 5602 events. 3680/5602 cut-off events. For 564662/564666 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 29630 event pairs, 715 based on Foata normal form. 8/5601 useless extension candidates. Maximal degree in co-relation 51826. Up to 5133 conditions per place. [2024-06-28 03:18:50,321 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 279 selfloop transitions, 53 changer transitions 0/339 dead transitions. [2024-06-28 03:18:50,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 339 transitions, 4481 flow [2024-06-28 03:18:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:18:50,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-28 03:18:50,323 INFO L175 Difference]: Start difference. First operand has 198 places, 304 transitions, 3643 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:18:50,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 339 transitions, 4481 flow [2024-06-28 03:18:50,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 339 transitions, 4423 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:50,774 INFO L231 Difference]: Finished difference. Result has 202 places, 306 transitions, 3768 flow [2024-06-28 03:18:50,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3585, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3768, PETRI_PLACES=202, PETRI_TRANSITIONS=306} [2024-06-28 03:18:50,774 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 157 predicate places. [2024-06-28 03:18:50,775 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 306 transitions, 3768 flow [2024-06-28 03:18:50,775 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 03:18:50,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:50,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:50,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:18:50,775 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 03:18:50,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2102399233, now seen corresponding path program 2 times [2024-06-28 03:18:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:50,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311440052] [2024-06-28 03:18:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:50,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:52,073 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 03:18:52,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311440052] [2024-06-28 03:18:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311440052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:52,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:52,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:52,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075050716] [2024-06-28 03:18:52,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:52,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:52,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:52,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:52,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:52,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:52,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 306 transitions, 3768 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 03:18:52,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:52,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:52,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:53,346 INFO L124 PetriNetUnfolderBase]: 3722/5662 cut-off events. [2024-06-28 03:18:53,346 INFO L125 PetriNetUnfolderBase]: For 592544/592548 co-relation queries the response was YES. [2024-06-28 03:18:53,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53308 conditions, 5662 events. 3722/5662 cut-off events. For 592544/592548 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 30026 event pairs, 844 based on Foata normal form. 8/5661 useless extension candidates. Maximal degree in co-relation 53216. Up to 4869 conditions per place. [2024-06-28 03:18:53,404 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 225 selfloop transitions, 113 changer transitions 0/345 dead transitions. [2024-06-28 03:18:53,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 345 transitions, 4896 flow [2024-06-28 03:18:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:18:53,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-28 03:18:53,405 INFO L175 Difference]: Start difference. First operand has 202 places, 306 transitions, 3768 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:18:53,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 345 transitions, 4896 flow [2024-06-28 03:18:53,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 345 transitions, 4731 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:54,003 INFO L231 Difference]: Finished difference. Result has 204 places, 310 transitions, 3980 flow [2024-06-28 03:18:54,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3603, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3980, PETRI_PLACES=204, PETRI_TRANSITIONS=310} [2024-06-28 03:18:54,004 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 159 predicate places. [2024-06-28 03:18:54,004 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 310 transitions, 3980 flow [2024-06-28 03:18:54,004 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 03:18:54,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:54,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:54,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:18:54,005 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 03:18:54,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:54,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2102402953, now seen corresponding path program 3 times [2024-06-28 03:18:54,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:54,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576038032] [2024-06-28 03:18:54,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:54,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:55,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576038032] [2024-06-28 03:18:55,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576038032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:55,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:55,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897777142] [2024-06-28 03:18:55,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:55,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:55,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 310 transitions, 3980 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 03:18:55,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:55,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:55,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:56,693 INFO L124 PetriNetUnfolderBase]: 3714/5650 cut-off events. [2024-06-28 03:18:56,694 INFO L125 PetriNetUnfolderBase]: For 612059/612063 co-relation queries the response was YES. [2024-06-28 03:18:56,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53682 conditions, 5650 events. 3714/5650 cut-off events. For 612059/612063 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 29945 event pairs, 823 based on Foata normal form. 8/5649 useless extension candidates. Maximal degree in co-relation 53589. Up to 4947 conditions per place. [2024-06-28 03:18:56,754 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 215 selfloop transitions, 121 changer transitions 0/343 dead transitions. [2024-06-28 03:18:56,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 343 transitions, 4764 flow [2024-06-28 03:18:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:18:56,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:18:56,755 INFO L175 Difference]: Start difference. First operand has 204 places, 310 transitions, 3980 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:18:56,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 343 transitions, 4764 flow [2024-06-28 03:18:57,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 343 transitions, 4508 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:57,367 INFO L231 Difference]: Finished difference. Result has 208 places, 310 transitions, 3984 flow [2024-06-28 03:18:57,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3984, PETRI_PLACES=208, PETRI_TRANSITIONS=310} [2024-06-28 03:18:57,367 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 163 predicate places. [2024-06-28 03:18:57,367 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 310 transitions, 3984 flow [2024-06-28 03:18:57,367 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 03:18:57,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:57,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:57,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:18:57,368 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 03:18:57,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2109447298, now seen corresponding path program 1 times [2024-06-28 03:18:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232013712] [2024-06-28 03:18:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:58,597 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 03:18:58,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232013712] [2024-06-28 03:18:58,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232013712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:58,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:58,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968432902] [2024-06-28 03:18:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:58,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:58,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:58,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:58,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:58,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:18:58,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 310 transitions, 3984 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 03:18:58,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:58,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:18:58,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:59,899 INFO L124 PetriNetUnfolderBase]: 3711/5645 cut-off events. [2024-06-28 03:18:59,899 INFO L125 PetriNetUnfolderBase]: For 623853/623857 co-relation queries the response was YES. [2024-06-28 03:18:59,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54005 conditions, 5645 events. 3711/5645 cut-off events. For 623853/623857 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 29859 event pairs, 802 based on Foata normal form. 6/5642 useless extension candidates. Maximal degree in co-relation 53910. Up to 4914 conditions per place. [2024-06-28 03:18:59,956 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 214 selfloop transitions, 125 changer transitions 0/346 dead transitions. [2024-06-28 03:18:59,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 346 transitions, 4866 flow [2024-06-28 03:18:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:18:59,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-28 03:18:59,957 INFO L175 Difference]: Start difference. First operand has 208 places, 310 transitions, 3984 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:18:59,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 346 transitions, 4866 flow [2024-06-28 03:19:00,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 346 transitions, 4608 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:00,501 INFO L231 Difference]: Finished difference. Result has 209 places, 313 transitions, 4094 flow [2024-06-28 03:19:00,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3726, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4094, PETRI_PLACES=209, PETRI_TRANSITIONS=313} [2024-06-28 03:19:00,501 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 164 predicate places. [2024-06-28 03:19:00,501 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 313 transitions, 4094 flow [2024-06-28 03:19:00,501 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 03:19:00,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:00,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:00,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:19:00,502 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 03:19:00,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:00,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1468153737, now seen corresponding path program 4 times [2024-06-28 03:19:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:00,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559431194] [2024-06-28 03:19:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:01,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:01,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559431194] [2024-06-28 03:19:01,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559431194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:01,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:01,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835463897] [2024-06-28 03:19:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:01,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:01,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 313 transitions, 4094 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 03:19:01,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:01,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:01,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:03,133 INFO L124 PetriNetUnfolderBase]: 3728/5674 cut-off events. [2024-06-28 03:19:03,133 INFO L125 PetriNetUnfolderBase]: For 651564/651564 co-relation queries the response was YES. [2024-06-28 03:19:03,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54870 conditions, 5674 events. 3728/5674 cut-off events. For 651564/651564 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 30082 event pairs, 828 based on Foata normal form. 4/5669 useless extension candidates. Maximal degree in co-relation 54774. Up to 4927 conditions per place. [2024-06-28 03:19:03,198 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 221 selfloop transitions, 119 changer transitions 0/347 dead transitions. [2024-06-28 03:19:03,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 347 transitions, 4958 flow [2024-06-28 03:19:03,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:19:03,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:19:03,200 INFO L175 Difference]: Start difference. First operand has 209 places, 313 transitions, 4094 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:19:03,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 347 transitions, 4958 flow [2024-06-28 03:19:03,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 347 transitions, 4658 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:03,836 INFO L231 Difference]: Finished difference. Result has 211 places, 315 transitions, 4117 flow [2024-06-28 03:19:03,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4117, PETRI_PLACES=211, PETRI_TRANSITIONS=315} [2024-06-28 03:19:03,837 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 166 predicate places. [2024-06-28 03:19:03,838 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 315 transitions, 4117 flow [2024-06-28 03:19:03,838 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 03:19:03,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:03,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:03,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:19:03,838 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 03:19:03,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1468150017, now seen corresponding path program 5 times [2024-06-28 03:19:03,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:03,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550214254] [2024-06-28 03:19:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550214254] [2024-06-28 03:19:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550214254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:05,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:05,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:05,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783229079] [2024-06-28 03:19:05,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:05,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:05,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:05,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:05,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 315 transitions, 4117 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 03:19:05,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:05,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:05,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:06,368 INFO L124 PetriNetUnfolderBase]: 3766/5744 cut-off events. [2024-06-28 03:19:06,369 INFO L125 PetriNetUnfolderBase]: For 686566/686566 co-relation queries the response was YES. [2024-06-28 03:19:06,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56227 conditions, 5744 events. 3766/5744 cut-off events. For 686566/686566 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 30529 event pairs, 826 based on Foata normal form. 4/5743 useless extension candidates. Maximal degree in co-relation 56130. Up to 4920 conditions per place. [2024-06-28 03:19:06,433 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 222 selfloop transitions, 124 changer transitions 0/353 dead transitions. [2024-06-28 03:19:06,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 353 transitions, 5291 flow [2024-06-28 03:19:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:19:06,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 03:19:06,436 INFO L175 Difference]: Start difference. First operand has 211 places, 315 transitions, 4117 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:19:06,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 353 transitions, 5291 flow [2024-06-28 03:19:07,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 353 transitions, 4986 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:07,096 INFO L231 Difference]: Finished difference. Result has 213 places, 319 transitions, 4227 flow [2024-06-28 03:19:07,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4227, PETRI_PLACES=213, PETRI_TRANSITIONS=319} [2024-06-28 03:19:07,097 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 168 predicate places. [2024-06-28 03:19:07,097 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 319 transitions, 4227 flow [2024-06-28 03:19:07,097 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 03:19:07,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:07,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:07,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:19:07,097 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 03:19:07,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1473660267, now seen corresponding path program 6 times [2024-06-28 03:19:07,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:07,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120298523] [2024-06-28 03:19:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:07,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:08,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120298523] [2024-06-28 03:19:08,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120298523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:08,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:08,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:08,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487134496] [2024-06-28 03:19:08,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:08,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:08,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:08,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:08,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 319 transitions, 4227 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 03:19:08,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:08,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:08,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:09,769 INFO L124 PetriNetUnfolderBase]: 3758/5727 cut-off events. [2024-06-28 03:19:09,769 INFO L125 PetriNetUnfolderBase]: For 702841/702841 co-relation queries the response was YES. [2024-06-28 03:19:09,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56320 conditions, 5727 events. 3758/5727 cut-off events. For 702841/702841 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 30401 event pairs, 800 based on Foata normal form. 4/5721 useless extension candidates. Maximal degree in co-relation 56222. Up to 4973 conditions per place. [2024-06-28 03:19:09,831 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 213 selfloop transitions, 131 changer transitions 0/351 dead transitions. [2024-06-28 03:19:09,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 351 transitions, 5025 flow [2024-06-28 03:19:09,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:19:09,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-28 03:19:09,833 INFO L175 Difference]: Start difference. First operand has 213 places, 319 transitions, 4227 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:19:09,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 351 transitions, 5025 flow [2024-06-28 03:19:10,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 351 transitions, 4747 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:10,539 INFO L231 Difference]: Finished difference. Result has 217 places, 319 transitions, 4218 flow [2024-06-28 03:19:10,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4218, PETRI_PLACES=217, PETRI_TRANSITIONS=319} [2024-06-28 03:19:10,539 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 172 predicate places. [2024-06-28 03:19:10,539 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 319 transitions, 4218 flow [2024-06-28 03:19:10,539 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 03:19:10,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:10,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:10,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:19:10,540 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 03:19:10,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1473875748, now seen corresponding path program 1 times [2024-06-28 03:19:10,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:10,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41897959] [2024-06-28 03:19:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:10,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:11,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:11,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41897959] [2024-06-28 03:19:11,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41897959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:11,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:11,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:11,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951239796] [2024-06-28 03:19:11,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:11,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:11,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:11,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:11,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:12,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:19:12,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 319 transitions, 4218 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:12,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:12,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:19:12,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:13,207 INFO L124 PetriNetUnfolderBase]: 4038/6040 cut-off events. [2024-06-28 03:19:13,207 INFO L125 PetriNetUnfolderBase]: For 718864/718864 co-relation queries the response was YES. [2024-06-28 03:19:13,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56882 conditions, 6040 events. 4038/6040 cut-off events. For 718864/718864 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 30809 event pairs, 840 based on Foata normal form. 6/6043 useless extension candidates. Maximal degree in co-relation 56782. Up to 5053 conditions per place. [2024-06-28 03:19:13,269 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 205 selfloop transitions, 161 changer transitions 0/371 dead transitions. [2024-06-28 03:19:13,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 371 transitions, 5202 flow [2024-06-28 03:19:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:19:13,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068181818181818 [2024-06-28 03:19:13,271 INFO L175 Difference]: Start difference. First operand has 217 places, 319 transitions, 4218 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:19:13,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 371 transitions, 5202 flow [2024-06-28 03:19:14,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 371 transitions, 4876 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:14,028 INFO L231 Difference]: Finished difference. Result has 220 places, 333 transitions, 4371 flow [2024-06-28 03:19:14,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3892, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4371, PETRI_PLACES=220, PETRI_TRANSITIONS=333} [2024-06-28 03:19:14,029 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 175 predicate places. [2024-06-28 03:19:14,029 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 333 transitions, 4371 flow [2024-06-28 03:19:14,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:14,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:14,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:14,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:19:14,030 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:14,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:14,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1441130846, now seen corresponding path program 1 times [2024-06-28 03:19:14,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:14,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174169073] [2024-06-28 03:19:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:14,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:14,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:14,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174169073] [2024-06-28 03:19:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174169073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:14,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:14,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065399549] [2024-06-28 03:19:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:14,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:14,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:14,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 333 transitions, 4371 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 03:19:14,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:14,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:14,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:16,209 INFO L124 PetriNetUnfolderBase]: 3850/5845 cut-off events. [2024-06-28 03:19:16,209 INFO L125 PetriNetUnfolderBase]: For 735411/735435 co-relation queries the response was YES. [2024-06-28 03:19:16,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56143 conditions, 5845 events. 3850/5845 cut-off events. For 735411/735435 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 30566 event pairs, 894 based on Foata normal form. 6/5820 useless extension candidates. Maximal degree in co-relation 56041. Up to 5291 conditions per place. [2024-06-28 03:19:16,274 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 270 selfloop transitions, 58 changer transitions 0/361 dead transitions. [2024-06-28 03:19:16,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 361 transitions, 5307 flow [2024-06-28 03:19:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:19:16,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:19:16,275 INFO L175 Difference]: Start difference. First operand has 220 places, 333 transitions, 4371 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:19:16,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 361 transitions, 5307 flow [2024-06-28 03:19:17,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 361 transitions, 4942 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:17,022 INFO L231 Difference]: Finished difference. Result has 219 places, 339 transitions, 4233 flow [2024-06-28 03:19:17,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4006, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4233, PETRI_PLACES=219, PETRI_TRANSITIONS=339} [2024-06-28 03:19:17,023 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 174 predicate places. [2024-06-28 03:19:17,023 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 339 transitions, 4233 flow [2024-06-28 03:19:17,023 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 03:19:17,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:17,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:17,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:19:17,024 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:17,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1441488896, now seen corresponding path program 2 times [2024-06-28 03:19:17,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:17,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902408746] [2024-06-28 03:19:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:17,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:17,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:17,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902408746] [2024-06-28 03:19:17,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902408746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:17,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:17,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:17,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946562849] [2024-06-28 03:19:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:17,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:17,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:17,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:17,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 339 transitions, 4233 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 03:19:17,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:17,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:17,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:19,187 INFO L124 PetriNetUnfolderBase]: 3855/5850 cut-off events. [2024-06-28 03:19:19,188 INFO L125 PetriNetUnfolderBase]: For 757219/757234 co-relation queries the response was YES. [2024-06-28 03:19:19,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56639 conditions, 5850 events. 3855/5850 cut-off events. For 757219/757234 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 30567 event pairs, 874 based on Foata normal form. 2/5828 useless extension candidates. Maximal degree in co-relation 56535. Up to 5289 conditions per place. [2024-06-28 03:19:19,251 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 268 selfloop transitions, 59 changer transitions 0/360 dead transitions. [2024-06-28 03:19:19,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 360 transitions, 5117 flow [2024-06-28 03:19:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:19:19,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41883116883116883 [2024-06-28 03:19:19,252 INFO L175 Difference]: Start difference. First operand has 219 places, 339 transitions, 4233 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:19:19,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 360 transitions, 5117 flow [2024-06-28 03:19:19,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 360 transitions, 5042 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 03:19:19,952 INFO L231 Difference]: Finished difference. Result has 223 places, 342 transitions, 4332 flow [2024-06-28 03:19:19,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4164, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4332, PETRI_PLACES=223, PETRI_TRANSITIONS=342} [2024-06-28 03:19:19,953 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 178 predicate places. [2024-06-28 03:19:19,953 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 342 transitions, 4332 flow [2024-06-28 03:19:19,953 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 03:19:19,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:19,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:19,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:19:19,954 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:19,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:19,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1441489330, now seen corresponding path program 1 times [2024-06-28 03:19:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:19,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591461159] [2024-06-28 03:19:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:20,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:20,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591461159] [2024-06-28 03:19:20,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591461159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:20,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:20,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:20,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685764012] [2024-06-28 03:19:20,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:20,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:20,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:20,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:20,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:20,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:19:20,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 342 transitions, 4332 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 03:19:20,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:20,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:19:20,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:22,150 INFO L124 PetriNetUnfolderBase]: 4052/6049 cut-off events. [2024-06-28 03:19:22,151 INFO L125 PetriNetUnfolderBase]: For 778794/778813 co-relation queries the response was YES. [2024-06-28 03:19:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58404 conditions, 6049 events. 4052/6049 cut-off events. For 778794/778813 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 30894 event pairs, 966 based on Foata normal form. 5/6030 useless extension candidates. Maximal degree in co-relation 58298. Up to 5756 conditions per place. [2024-06-28 03:19:22,219 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 301 selfloop transitions, 31 changer transitions 0/363 dead transitions. [2024-06-28 03:19:22,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 363 transitions, 5262 flow [2024-06-28 03:19:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:22,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 03:19:22,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 03:19:22,220 INFO L175 Difference]: Start difference. First operand has 223 places, 342 transitions, 4332 flow. Second operand 7 states and 120 transitions. [2024-06-28 03:19:22,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 363 transitions, 5262 flow [2024-06-28 03:19:22,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 363 transitions, 5161 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:19:22,768 INFO L231 Difference]: Finished difference. Result has 226 places, 348 transitions, 4401 flow [2024-06-28 03:19:22,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4401, PETRI_PLACES=226, PETRI_TRANSITIONS=348} [2024-06-28 03:19:22,768 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 181 predicate places. [2024-06-28 03:19:22,769 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 348 transitions, 4401 flow [2024-06-28 03:19:22,769 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 03:19:22,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:22,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:22,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:19:22,769 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 03:19:22,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:22,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1641033139, now seen corresponding path program 7 times [2024-06-28 03:19:22,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:22,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974093537] [2024-06-28 03:19:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:22,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:24,262 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 03:19:24,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:24,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974093537] [2024-06-28 03:19:24,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974093537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:24,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:24,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:24,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822823173] [2024-06-28 03:19:24,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:24,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:24,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:24,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:24,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 348 transitions, 4401 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 03:19:24,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:24,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:24,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:25,590 INFO L124 PetriNetUnfolderBase]: 3795/5779 cut-off events. [2024-06-28 03:19:25,590 INFO L125 PetriNetUnfolderBase]: For 804608/804608 co-relation queries the response was YES. [2024-06-28 03:19:25,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58506 conditions, 5779 events. 3795/5779 cut-off events. For 804608/804608 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 30548 event pairs, 741 based on Foata normal form. 4/5778 useless extension candidates. Maximal degree in co-relation 58399. Up to 4892 conditions per place. [2024-06-28 03:19:25,654 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 222 selfloop transitions, 154 changer transitions 0/386 dead transitions. [2024-06-28 03:19:25,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 386 transitions, 5359 flow [2024-06-28 03:19:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:19:25,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 03:19:25,656 INFO L175 Difference]: Start difference. First operand has 226 places, 348 transitions, 4401 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:19:25,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 386 transitions, 5359 flow [2024-06-28 03:19:26,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 386 transitions, 5294 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 03:19:26,376 INFO L231 Difference]: Finished difference. Result has 233 places, 350 transitions, 4737 flow [2024-06-28 03:19:26,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4336, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4737, PETRI_PLACES=233, PETRI_TRANSITIONS=350} [2024-06-28 03:19:26,377 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 188 predicate places. [2024-06-28 03:19:26,377 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 350 transitions, 4737 flow [2024-06-28 03:19:26,377 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 03:19:26,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:26,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:26,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:19:26,378 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 03:19:26,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1640817658, now seen corresponding path program 2 times [2024-06-28 03:19:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:26,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623670117] [2024-06-28 03:19:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:27,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:27,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623670117] [2024-06-28 03:19:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623670117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:27,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:27,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198403499] [2024-06-28 03:19:27,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:27,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:28,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:19:28,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 350 transitions, 4737 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:28,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:28,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:19:28,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:29,185 INFO L124 PetriNetUnfolderBase]: 4077/6092 cut-off events. [2024-06-28 03:19:29,185 INFO L125 PetriNetUnfolderBase]: For 834287/834293 co-relation queries the response was YES. [2024-06-28 03:19:29,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60476 conditions, 6092 events. 4077/6092 cut-off events. For 834287/834293 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 31049 event pairs, 817 based on Foata normal form. 10/6083 useless extension candidates. Maximal degree in co-relation 60367. Up to 4650 conditions per place. [2024-06-28 03:19:29,255 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 197 selfloop transitions, 197 changer transitions 0/401 dead transitions. [2024-06-28 03:19:29,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 401 transitions, 5753 flow [2024-06-28 03:19:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:19:29,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 03:19:29,256 INFO L175 Difference]: Start difference. First operand has 233 places, 350 transitions, 4737 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:19:29,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 401 transitions, 5753 flow [2024-06-28 03:19:30,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 401 transitions, 5310 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:30,144 INFO L231 Difference]: Finished difference. Result has 238 places, 362 transitions, 4907 flow [2024-06-28 03:19:30,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4907, PETRI_PLACES=238, PETRI_TRANSITIONS=362} [2024-06-28 03:19:30,145 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 193 predicate places. [2024-06-28 03:19:30,145 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 362 transitions, 4907 flow [2024-06-28 03:19:30,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:30,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:30,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:30,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:19:30,146 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 03:19:30,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1907397974, now seen corresponding path program 3 times [2024-06-28 03:19:30,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:30,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508126026] [2024-06-28 03:19:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:30,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:31,622 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 03:19:31,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:31,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508126026] [2024-06-28 03:19:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508126026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:31,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748699160] [2024-06-28 03:19:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:31,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:31,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:31,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:31,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:19:31,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 362 transitions, 4907 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:31,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:31,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:19:31,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:32,954 INFO L124 PetriNetUnfolderBase]: 4099/6123 cut-off events. [2024-06-28 03:19:32,954 INFO L125 PetriNetUnfolderBase]: For 849801/849813 co-relation queries the response was YES. [2024-06-28 03:19:32,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61684 conditions, 6123 events. 4099/6123 cut-off events. For 849801/849813 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 31288 event pairs, 916 based on Foata normal form. 10/6125 useless extension candidates. Maximal degree in co-relation 61571. Up to 5696 conditions per place. [2024-06-28 03:19:33,023 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 332 selfloop transitions, 82 changer transitions 0/421 dead transitions. [2024-06-28 03:19:33,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 421 transitions, 6448 flow [2024-06-28 03:19:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:19:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:19:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 03:19:33,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:19:33,025 INFO L175 Difference]: Start difference. First operand has 238 places, 362 transitions, 4907 flow. Second operand 11 states and 187 transitions. [2024-06-28 03:19:33,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 421 transitions, 6448 flow [2024-06-28 03:19:33,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 421 transitions, 6277 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:33,777 INFO L231 Difference]: Finished difference. Result has 246 places, 385 transitions, 5319 flow [2024-06-28 03:19:33,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4757, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5319, PETRI_PLACES=246, PETRI_TRANSITIONS=385} [2024-06-28 03:19:33,778 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 201 predicate places. [2024-06-28 03:19:33,778 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 385 transitions, 5319 flow [2024-06-28 03:19:33,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:33,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:33,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:33,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:19:33,778 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:33,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:33,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1916921174, now seen corresponding path program 4 times [2024-06-28 03:19:33,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:33,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891614738] [2024-06-28 03:19:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:33,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:35,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891614738] [2024-06-28 03:19:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891614738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:35,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:35,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049320919] [2024-06-28 03:19:35,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:35,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:35,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:35,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:35,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:19:35,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 385 transitions, 5319 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:35,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:35,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:19:35,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:36,514 INFO L124 PetriNetUnfolderBase]: 4132/6172 cut-off events. [2024-06-28 03:19:36,514 INFO L125 PetriNetUnfolderBase]: For 878647/878653 co-relation queries the response was YES. [2024-06-28 03:19:36,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62813 conditions, 6172 events. 4132/6172 cut-off events. For 878647/878653 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 31570 event pairs, 777 based on Foata normal form. 10/6162 useless extension candidates. Maximal degree in co-relation 62696. Up to 4717 conditions per place. [2024-06-28 03:19:36,589 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 198 selfloop transitions, 225 changer transitions 0/430 dead transitions. [2024-06-28 03:19:36,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 430 transitions, 6427 flow [2024-06-28 03:19:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 03:19:36,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-28 03:19:36,590 INFO L175 Difference]: Start difference. First operand has 246 places, 385 transitions, 5319 flow. Second operand 10 states and 184 transitions. [2024-06-28 03:19:36,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 430 transitions, 6427 flow [2024-06-28 03:19:37,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 430 transitions, 6318 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:19:37,659 INFO L231 Difference]: Finished difference. Result has 253 places, 393 transitions, 5818 flow [2024-06-28 03:19:37,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5214, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5818, PETRI_PLACES=253, PETRI_TRANSITIONS=393} [2024-06-28 03:19:37,660 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 208 predicate places. [2024-06-28 03:19:37,660 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 393 transitions, 5818 flow [2024-06-28 03:19:37,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:37,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:37,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:37,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:19:37,660 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 03:19:37,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash -654144753, now seen corresponding path program 8 times [2024-06-28 03:19:37,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:37,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720099064] [2024-06-28 03:19:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:37,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:38,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:38,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720099064] [2024-06-28 03:19:38,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720099064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:38,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:38,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:38,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618724108] [2024-06-28 03:19:38,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:38,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:38,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:38,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:38,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:39,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:39,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 393 transitions, 5818 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 03:19:39,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:39,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:39,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:40,459 INFO L124 PetriNetUnfolderBase]: 3909/5946 cut-off events. [2024-06-28 03:19:40,459 INFO L125 PetriNetUnfolderBase]: For 893520/893531 co-relation queries the response was YES. [2024-06-28 03:19:40,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63195 conditions, 5946 events. 3909/5946 cut-off events. For 893520/893531 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 31476 event pairs, 788 based on Foata normal form. 8/5925 useless extension candidates. Maximal degree in co-relation 63075. Up to 5035 conditions per place. [2024-06-28 03:19:40,534 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 270 selfloop transitions, 139 changer transitions 0/425 dead transitions. [2024-06-28 03:19:40,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 425 transitions, 6826 flow [2024-06-28 03:19:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:19:40,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:19:40,536 INFO L175 Difference]: Start difference. First operand has 253 places, 393 transitions, 5818 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:19:40,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 425 transitions, 6826 flow [2024-06-28 03:19:41,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 425 transitions, 6349 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:41,714 INFO L231 Difference]: Finished difference. Result has 256 places, 395 transitions, 5716 flow [2024-06-28 03:19:41,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5341, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5716, PETRI_PLACES=256, PETRI_TRANSITIONS=395} [2024-06-28 03:19:41,715 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 211 predicate places. [2024-06-28 03:19:41,715 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 395 transitions, 5716 flow [2024-06-28 03:19:41,715 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 03:19:41,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:41,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:41,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:19:41,715 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:41,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:41,716 INFO L85 PathProgramCache]: Analyzing trace with hash -121544447, now seen corresponding path program 9 times [2024-06-28 03:19:41,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:41,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870283634] [2024-06-28 03:19:41,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:41,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870283634] [2024-06-28 03:19:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870283634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:43,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:43,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:43,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179125103] [2024-06-28 03:19:43,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:43,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:43,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:43,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 395 transitions, 5716 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 03:19:43,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:43,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:43,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:44,521 INFO L124 PetriNetUnfolderBase]: 3934/5986 cut-off events. [2024-06-28 03:19:44,521 INFO L125 PetriNetUnfolderBase]: For 920541/920547 co-relation queries the response was YES. [2024-06-28 03:19:44,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63589 conditions, 5986 events. 3934/5986 cut-off events. For 920541/920547 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 31696 event pairs, 793 based on Foata normal form. 8/5972 useless extension candidates. Maximal degree in co-relation 63468. Up to 4992 conditions per place. [2024-06-28 03:19:44,594 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 269 selfloop transitions, 146 changer transitions 0/431 dead transitions. [2024-06-28 03:19:44,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 431 transitions, 7084 flow [2024-06-28 03:19:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:19:44,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 03:19:44,595 INFO L175 Difference]: Start difference. First operand has 256 places, 395 transitions, 5716 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:19:44,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 431 transitions, 7084 flow [2024-06-28 03:19:45,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 431 transitions, 6727 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:45,663 INFO L231 Difference]: Finished difference. Result has 258 places, 399 transitions, 5842 flow [2024-06-28 03:19:45,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5359, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5842, PETRI_PLACES=258, PETRI_TRANSITIONS=399} [2024-06-28 03:19:45,663 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 213 predicate places. [2024-06-28 03:19:45,663 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 399 transitions, 5842 flow [2024-06-28 03:19:45,664 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 03:19:45,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:45,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:45,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:19:45,664 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 03:19:45,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash -116034197, now seen corresponding path program 10 times [2024-06-28 03:19:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:45,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515947863] [2024-06-28 03:19:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:45,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:47,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:47,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515947863] [2024-06-28 03:19:47,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515947863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:47,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:47,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:47,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754385082] [2024-06-28 03:19:47,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:47,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:47,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:47,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:47,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:47,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:47,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 399 transitions, 5842 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 03:19:47,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:47,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:47,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:48,927 INFO L124 PetriNetUnfolderBase]: 3926/5970 cut-off events. [2024-06-28 03:19:48,928 INFO L125 PetriNetUnfolderBase]: For 936025/936025 co-relation queries the response was YES. [2024-06-28 03:19:48,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63566 conditions, 5970 events. 3926/5970 cut-off events. For 936025/936025 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 31564 event pairs, 778 based on Foata normal form. 4/5969 useless extension candidates. Maximal degree in co-relation 63444. Up to 5063 conditions per place. [2024-06-28 03:19:49,006 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 280 selfloop transitions, 140 changer transitions 0/436 dead transitions. [2024-06-28 03:19:49,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 436 transitions, 6810 flow [2024-06-28 03:19:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:19:49,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-28 03:19:49,007 INFO L175 Difference]: Start difference. First operand has 258 places, 399 transitions, 5842 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:19:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 436 transitions, 6810 flow [2024-06-28 03:19:50,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 436 transitions, 6490 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:50,349 INFO L231 Difference]: Finished difference. Result has 263 places, 399 transitions, 5809 flow [2024-06-28 03:19:50,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5522, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5809, PETRI_PLACES=263, PETRI_TRANSITIONS=399} [2024-06-28 03:19:50,350 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 218 predicate places. [2024-06-28 03:19:50,350 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 399 transitions, 5809 flow [2024-06-28 03:19:50,350 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 03:19:50,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:50,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:50,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:19:50,351 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 03:19:50,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:50,351 INFO L85 PathProgramCache]: Analyzing trace with hash -115818716, now seen corresponding path program 5 times [2024-06-28 03:19:50,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:50,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927720713] [2024-06-28 03:19:50,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:50,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:51,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:51,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927720713] [2024-06-28 03:19:51,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927720713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:51,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:51,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:19:51,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830733693] [2024-06-28 03:19:51,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:51,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:19:51,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:51,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:19:51,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:19:51,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:19:51,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 399 transitions, 5809 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:51,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:51,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:19:51,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:53,143 INFO L124 PetriNetUnfolderBase]: 4137/6183 cut-off events. [2024-06-28 03:19:53,143 INFO L125 PetriNetUnfolderBase]: For 960311/960317 co-relation queries the response was YES. [2024-06-28 03:19:53,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64639 conditions, 6183 events. 4137/6183 cut-off events. For 960311/960317 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 31656 event pairs, 849 based on Foata normal form. 10/6173 useless extension candidates. Maximal degree in co-relation 64515. Up to 4708 conditions per place. [2024-06-28 03:19:53,220 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 235 selfloop transitions, 200 changer transitions 0/442 dead transitions. [2024-06-28 03:19:53,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 442 transitions, 6881 flow [2024-06-28 03:19:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 03:19:53,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-06-28 03:19:53,221 INFO L175 Difference]: Start difference. First operand has 263 places, 399 transitions, 5809 flow. Second operand 10 states and 186 transitions. [2024-06-28 03:19:53,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 442 transitions, 6881 flow [2024-06-28 03:19:54,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 442 transitions, 6482 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:54,670 INFO L231 Difference]: Finished difference. Result has 265 places, 406 transitions, 5912 flow [2024-06-28 03:19:54,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5410, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5912, PETRI_PLACES=265, PETRI_TRANSITIONS=406} [2024-06-28 03:19:54,671 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 220 predicate places. [2024-06-28 03:19:54,671 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 406 transitions, 5912 flow [2024-06-28 03:19:54,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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 03:19:54,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:54,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:54,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:19:54,672 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:54,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1854796210, now seen corresponding path program 2 times [2024-06-28 03:19:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:54,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451940637] [2024-06-28 03:19:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:54,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:55,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:55,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451940637] [2024-06-28 03:19:55,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451940637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:55,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:55,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:55,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658714827] [2024-06-28 03:19:55,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:55,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:55,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:55,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:55,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:19:55,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 406 transitions, 5912 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 03:19:55,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:55,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:19:55,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:57,020 INFO L124 PetriNetUnfolderBase]: 4103/6134 cut-off events. [2024-06-28 03:19:57,020 INFO L125 PetriNetUnfolderBase]: For 968942/968969 co-relation queries the response was YES. [2024-06-28 03:19:57,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64580 conditions, 6134 events. 4103/6134 cut-off events. For 968942/968969 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 31522 event pairs, 943 based on Foata normal form. 9/6114 useless extension candidates. Maximal degree in co-relation 64454. Up to 5822 conditions per place. [2024-06-28 03:19:57,094 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 351 selfloop transitions, 33 changer transitions 0/419 dead transitions. [2024-06-28 03:19:57,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 419 transitions, 6898 flow [2024-06-28 03:19:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 03:19:57,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37012987012987014 [2024-06-28 03:19:57,095 INFO L175 Difference]: Start difference. First operand has 265 places, 406 transitions, 5912 flow. Second operand 7 states and 114 transitions. [2024-06-28 03:19:57,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 419 transitions, 6898 flow [2024-06-28 03:19:57,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 419 transitions, 6224 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:19:57,919 INFO L231 Difference]: Finished difference. Result has 260 places, 409 transitions, 5358 flow [2024-06-28 03:19:57,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5238, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5358, PETRI_PLACES=260, PETRI_TRANSITIONS=409} [2024-06-28 03:19:57,920 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 215 predicate places. [2024-06-28 03:19:57,920 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 409 transitions, 5358 flow [2024-06-28 03:19:57,920 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 03:19:57,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:57,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:57,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:19:57,921 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:57,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1854795776, now seen corresponding path program 3 times [2024-06-28 03:19:57,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:57,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122677433] [2024-06-28 03:19:57,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:57,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:58,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122677433] [2024-06-28 03:19:58,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122677433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:58,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:58,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:58,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213364465] [2024-06-28 03:19:58,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:58,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:58,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:58,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:58,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 409 transitions, 5358 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 03:19:58,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:58,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:58,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:00,061 INFO L124 PetriNetUnfolderBase]: 3923/5954 cut-off events. [2024-06-28 03:20:00,061 INFO L125 PetriNetUnfolderBase]: For 987040/987061 co-relation queries the response was YES. [2024-06-28 03:20:00,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62471 conditions, 5954 events. 3923/5954 cut-off events. For 987040/987061 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 31293 event pairs, 860 based on Foata normal form. 6/5919 useless extension candidates. Maximal degree in co-relation 62345. Up to 5372 conditions per place. [2024-06-28 03:20:00,137 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 322 selfloop transitions, 58 changer transitions 0/420 dead transitions. [2024-06-28 03:20:00,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 420 transitions, 6152 flow [2024-06-28 03:20:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:20:00,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-06-28 03:20:00,139 INFO L175 Difference]: Start difference. First operand has 260 places, 409 transitions, 5358 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:20:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 420 transitions, 6152 flow [2024-06-28 03:20:01,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 420 transitions, 6014 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:01,530 INFO L231 Difference]: Finished difference. Result has 262 places, 409 transitions, 5342 flow [2024-06-28 03:20:01,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5220, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5342, PETRI_PLACES=262, PETRI_TRANSITIONS=409} [2024-06-28 03:20:01,530 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2024-06-28 03:20:01,530 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 409 transitions, 5342 flow [2024-06-28 03:20:01,531 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 03:20:01,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:01,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:01,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:20:01,531 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:01,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1855271440, now seen corresponding path program 3 times [2024-06-28 03:20:01,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:01,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632289442] [2024-06-28 03:20:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:01,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:02,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632289442] [2024-06-28 03:20:02,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632289442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:02,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:02,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:20:02,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156046356] [2024-06-28 03:20:02,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:02,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:20:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:20:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:20:02,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:20:02,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 409 transitions, 5342 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 03:20:02,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:02,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:20:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:03,683 INFO L124 PetriNetUnfolderBase]: 4094/6122 cut-off events. [2024-06-28 03:20:03,684 INFO L125 PetriNetUnfolderBase]: For 1005200/1005227 co-relation queries the response was YES. [2024-06-28 03:20:03,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63797 conditions, 6122 events. 4094/6122 cut-off events. For 1005200/1005227 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 31492 event pairs, 942 based on Foata normal form. 9/6102 useless extension candidates. Maximal degree in co-relation 63670. Up to 5811 conditions per place. [2024-06-28 03:20:03,765 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 349 selfloop transitions, 34 changer transitions 0/418 dead transitions. [2024-06-28 03:20:03,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 418 transitions, 6134 flow [2024-06-28 03:20:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:03,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 03:20:03,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:20:03,765 INFO L175 Difference]: Start difference. First operand has 262 places, 409 transitions, 5342 flow. Second operand 7 states and 112 transitions. [2024-06-28 03:20:03,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 418 transitions, 6134 flow [2024-06-28 03:20:05,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 418 transitions, 5898 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:05,133 INFO L231 Difference]: Finished difference. Result has 262 places, 409 transitions, 5180 flow [2024-06-28 03:20:05,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5106, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5180, PETRI_PLACES=262, PETRI_TRANSITIONS=409} [2024-06-28 03:20:05,134 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2024-06-28 03:20:05,134 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 409 transitions, 5180 flow [2024-06-28 03:20:05,134 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 03:20:05,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:05,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:05,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:20:05,134 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:05,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:05,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1618625624, now seen corresponding path program 1 times [2024-06-28 03:20:05,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:05,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582638311] [2024-06-28 03:20:05,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:05,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582638311] [2024-06-28 03:20:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582638311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:06,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:06,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893043088] [2024-06-28 03:20:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:06,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:06,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:06,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 409 transitions, 5180 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:06,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:06,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:06,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:07,249 INFO L124 PetriNetUnfolderBase]: 3799/5815 cut-off events. [2024-06-28 03:20:07,249 INFO L125 PetriNetUnfolderBase]: For 896134/896134 co-relation queries the response was YES. [2024-06-28 03:20:07,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58817 conditions, 5815 events. 3799/5815 cut-off events. For 896134/896134 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 30746 event pairs, 857 based on Foata normal form. 1/5813 useless extension candidates. Maximal degree in co-relation 58689. Up to 5492 conditions per place. [2024-06-28 03:20:07,324 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 397 selfloop transitions, 25 changer transitions 0/431 dead transitions. [2024-06-28 03:20:07,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 431 transitions, 6340 flow [2024-06-28 03:20:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:07,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:20:07,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2024-06-28 03:20:07,325 INFO L175 Difference]: Start difference. First operand has 262 places, 409 transitions, 5180 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:20:07,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 431 transitions, 6340 flow [2024-06-28 03:20:08,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 431 transitions, 6262 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:20:08,790 INFO L231 Difference]: Finished difference. Result has 263 places, 415 transitions, 5280 flow [2024-06-28 03:20:08,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5280, PETRI_PLACES=263, PETRI_TRANSITIONS=415} [2024-06-28 03:20:08,790 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 218 predicate places. [2024-06-28 03:20:08,791 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 415 transitions, 5280 flow [2024-06-28 03:20:08,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:08,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:08,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:08,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:20:08,791 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:08,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:08,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1618805362, now seen corresponding path program 1 times [2024-06-28 03:20:08,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:08,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162453422] [2024-06-28 03:20:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:09,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:09,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162453422] [2024-06-28 03:20:09,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162453422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:09,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:09,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:09,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777341631] [2024-06-28 03:20:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:09,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:09,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:09,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:09,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:09,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:09,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 415 transitions, 5280 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:09,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:09,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:09,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:10,985 INFO L124 PetriNetUnfolderBase]: 3791/5794 cut-off events. [2024-06-28 03:20:10,986 INFO L125 PetriNetUnfolderBase]: For 915561/915576 co-relation queries the response was YES. [2024-06-28 03:20:11,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59055 conditions, 5794 events. 3791/5794 cut-off events. For 915561/915576 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30672 event pairs, 878 based on Foata normal form. 1/5771 useless extension candidates. Maximal degree in co-relation 58926. Up to 5376 conditions per place. [2024-06-28 03:20:11,063 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 371 selfloop transitions, 25 changer transitions 0/434 dead transitions. [2024-06-28 03:20:11,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 434 transitions, 6370 flow [2024-06-28 03:20:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:11,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:20:11,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:20:11,064 INFO L175 Difference]: Start difference. First operand has 263 places, 415 transitions, 5280 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:20:11,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 434 transitions, 6370 flow [2024-06-28 03:20:12,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 434 transitions, 6287 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 03:20:12,243 INFO L231 Difference]: Finished difference. Result has 268 places, 421 transitions, 5367 flow [2024-06-28 03:20:12,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5197, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5367, PETRI_PLACES=268, PETRI_TRANSITIONS=421} [2024-06-28 03:20:12,243 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 223 predicate places. [2024-06-28 03:20:12,244 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 421 transitions, 5367 flow [2024-06-28 03:20:12,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:12,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:12,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:12,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:20:12,244 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:12,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:12,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1618805114, now seen corresponding path program 2 times [2024-06-28 03:20:12,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:12,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68485089] [2024-06-28 03:20:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:12,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:13,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:13,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68485089] [2024-06-28 03:20:13,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68485089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:13,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:13,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:20:13,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776084927] [2024-06-28 03:20:13,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:13,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:20:13,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:20:13,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:20:13,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:13,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 421 transitions, 5367 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 03:20:13,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:13,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:13,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:14,298 INFO L124 PetriNetUnfolderBase]: 3821/5841 cut-off events. [2024-06-28 03:20:14,298 INFO L125 PetriNetUnfolderBase]: For 945362/945362 co-relation queries the response was YES. [2024-06-28 03:20:14,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60368 conditions, 5841 events. 3821/5841 cut-off events. For 945362/945362 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 30836 event pairs, 856 based on Foata normal form. 1/5839 useless extension candidates. Maximal degree in co-relation 60237. Up to 5515 conditions per place. [2024-06-28 03:20:14,374 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 399 selfloop transitions, 27 changer transitions 0/437 dead transitions. [2024-06-28 03:20:14,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 437 transitions, 6463 flow [2024-06-28 03:20:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:20:14,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39935064935064934 [2024-06-28 03:20:14,375 INFO L175 Difference]: Start difference. First operand has 268 places, 421 transitions, 5367 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:20:14,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 437 transitions, 6463 flow [2024-06-28 03:20:15,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 437 transitions, 6394 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:20:15,884 INFO L231 Difference]: Finished difference. Result has 271 places, 424 transitions, 5410 flow [2024-06-28 03:20:15,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5298, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5410, PETRI_PLACES=271, PETRI_TRANSITIONS=424} [2024-06-28 03:20:15,885 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 226 predicate places. [2024-06-28 03:20:15,885 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 424 transitions, 5410 flow [2024-06-28 03:20:15,885 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 03:20:15,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:15,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:15,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:20:15,885 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:15,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:15,886 INFO L85 PathProgramCache]: Analyzing trace with hash -284299248, now seen corresponding path program 2 times [2024-06-28 03:20:15,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:15,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249679444] [2024-06-28 03:20:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:15,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:16,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249679444] [2024-06-28 03:20:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249679444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:16,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:16,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:20:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305791024] [2024-06-28 03:20:16,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:16,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:20:16,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:20:16,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:20:16,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:16,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 424 transitions, 5410 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 03:20:16,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:16,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:16,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:17,942 INFO L124 PetriNetUnfolderBase]: 3801/5808 cut-off events. [2024-06-28 03:20:17,942 INFO L125 PetriNetUnfolderBase]: For 962223/962238 co-relation queries the response was YES. [2024-06-28 03:20:17,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60143 conditions, 5808 events. 3801/5808 cut-off events. For 962223/962238 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 30760 event pairs, 876 based on Foata normal form. 1/5785 useless extension candidates. Maximal degree in co-relation 60010. Up to 5402 conditions per place. [2024-06-28 03:20:18,009 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 378 selfloop transitions, 20 changer transitions 0/437 dead transitions. [2024-06-28 03:20:18,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 437 transitions, 6444 flow [2024-06-28 03:20:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 03:20:18,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-28 03:20:18,010 INFO L175 Difference]: Start difference. First operand has 271 places, 424 transitions, 5410 flow. Second operand 7 states and 118 transitions. [2024-06-28 03:20:18,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 437 transitions, 6444 flow [2024-06-28 03:20:19,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 437 transitions, 6366 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:20:19,041 INFO L231 Difference]: Finished difference. Result has 274 places, 427 transitions, 5434 flow [2024-06-28 03:20:19,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5332, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5434, PETRI_PLACES=274, PETRI_TRANSITIONS=427} [2024-06-28 03:20:19,041 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 229 predicate places. [2024-06-28 03:20:19,041 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 427 transitions, 5434 flow [2024-06-28 03:20:19,042 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 03:20:19,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:19,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:19,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:20:19,042 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 03:20:19,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1854980474, now seen corresponding path program 3 times [2024-06-28 03:20:19,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:19,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798653576] [2024-06-28 03:20:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:19,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:19,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:19,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798653576] [2024-06-28 03:20:19,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798653576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:19,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:19,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:20:19,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724345462] [2024-06-28 03:20:19,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:19,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:20:19,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:20:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:20:19,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:19,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 427 transitions, 5434 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 03:20:19,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:19,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:19,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:21,189 INFO L124 PetriNetUnfolderBase]: 3823/5844 cut-off events. [2024-06-28 03:20:21,190 INFO L125 PetriNetUnfolderBase]: For 987385/987385 co-relation queries the response was YES. [2024-06-28 03:20:21,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60888 conditions, 5844 events. 3823/5844 cut-off events. For 987385/987385 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30834 event pairs, 855 based on Foata normal form. 1/5842 useless extension candidates. Maximal degree in co-relation 60754. Up to 5544 conditions per place. [2024-06-28 03:20:21,254 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 409 selfloop transitions, 15 changer transitions 0/436 dead transitions. [2024-06-28 03:20:21,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 436 transitions, 6308 flow [2024-06-28 03:20:21,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:21,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 03:20:21,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37337662337662336 [2024-06-28 03:20:21,255 INFO L175 Difference]: Start difference. First operand has 274 places, 427 transitions, 5434 flow. Second operand 7 states and 115 transitions. [2024-06-28 03:20:21,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 436 transitions, 6308 flow [2024-06-28 03:20:22,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 436 transitions, 6192 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:22,328 INFO L231 Difference]: Finished difference. Result has 276 places, 427 transitions, 5354 flow [2024-06-28 03:20:22,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5318, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5354, PETRI_PLACES=276, PETRI_TRANSITIONS=427} [2024-06-28 03:20:22,329 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 231 predicate places. [2024-06-28 03:20:22,329 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 427 transitions, 5354 flow [2024-06-28 03:20:22,329 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 03:20:22,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:22,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:22,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:20:22,329 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 03:20:22,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1586167188, now seen corresponding path program 3 times [2024-06-28 03:20:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:22,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883067218] [2024-06-28 03:20:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:23,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883067218] [2024-06-28 03:20:23,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883067218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:23,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:23,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:20:23,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272284914] [2024-06-28 03:20:23,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:23,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:20:23,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:23,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:20:23,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:20:23,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:23,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 427 transitions, 5354 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 03:20:23,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:23,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:23,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:24,384 INFO L124 PetriNetUnfolderBase]: 3795/5800 cut-off events. [2024-06-28 03:20:24,384 INFO L125 PetriNetUnfolderBase]: For 1001004/1001019 co-relation queries the response was YES. [2024-06-28 03:20:24,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60386 conditions, 5800 events. 3795/5800 cut-off events. For 1001004/1001019 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 30703 event pairs, 876 based on Foata normal form. 1/5777 useless extension candidates. Maximal degree in co-relation 60251. Up to 5402 conditions per place. [2024-06-28 03:20:24,458 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 381 selfloop transitions, 16 changer transitions 0/436 dead transitions. [2024-06-28 03:20:24,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 436 transitions, 6174 flow [2024-06-28 03:20:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:20:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:20:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 03:20:24,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-28 03:20:24,459 INFO L175 Difference]: Start difference. First operand has 276 places, 427 transitions, 5354 flow. Second operand 8 states and 125 transitions. [2024-06-28 03:20:24,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 436 transitions, 6174 flow [2024-06-28 03:20:25,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 436 transitions, 6076 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:25,779 INFO L231 Difference]: Finished difference. Result has 277 places, 427 transitions, 5294 flow [2024-06-28 03:20:25,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5256, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5294, PETRI_PLACES=277, PETRI_TRANSITIONS=427} [2024-06-28 03:20:25,780 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 232 predicate places. [2024-06-28 03:20:25,780 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 427 transitions, 5294 flow [2024-06-28 03:20:25,780 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 03:20:25,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:25,780 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 03:20:25,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:20:25,780 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 03:20:25,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash 691775530, now seen corresponding path program 1 times [2024-06-28 03:20:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:25,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123896128] [2024-06-28 03:20:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:27,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:27,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123896128] [2024-06-28 03:20:27,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123896128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:27,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:27,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:27,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340406443] [2024-06-28 03:20:27,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:27,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:27,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:27,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:27,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:27,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:27,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 427 transitions, 5294 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:27,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:27,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:27,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:28,754 INFO L124 PetriNetUnfolderBase]: 3980/6051 cut-off events. [2024-06-28 03:20:28,755 INFO L125 PetriNetUnfolderBase]: For 1199832/1199836 co-relation queries the response was YES. [2024-06-28 03:20:28,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67223 conditions, 6051 events. 3980/6051 cut-off events. For 1199832/1199836 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 31973 event pairs, 616 based on Foata normal form. 8/6056 useless extension candidates. Maximal degree in co-relation 67087. Up to 5506 conditions per place. [2024-06-28 03:20:28,836 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 391 selfloop transitions, 55 changer transitions 0/467 dead transitions. [2024-06-28 03:20:28,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 467 transitions, 6406 flow [2024-06-28 03:20:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 03:20:28,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:20:28,837 INFO L175 Difference]: Start difference. First operand has 277 places, 427 transitions, 5294 flow. Second operand 10 states and 180 transitions. [2024-06-28 03:20:28,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 467 transitions, 6406 flow [2024-06-28 03:20:30,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 467 transitions, 6364 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:30,224 INFO L231 Difference]: Finished difference. Result has 280 places, 429 transitions, 5469 flow [2024-06-28 03:20:30,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5469, PETRI_PLACES=280, PETRI_TRANSITIONS=429} [2024-06-28 03:20:30,224 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 235 predicate places. [2024-06-28 03:20:30,225 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 429 transitions, 5469 flow [2024-06-28 03:20:30,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:30,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:30,225 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 03:20:30,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:20:30,225 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:30,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:30,226 INFO L85 PathProgramCache]: Analyzing trace with hash 749987950, now seen corresponding path program 2 times [2024-06-28 03:20:30,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:30,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980361545] [2024-06-28 03:20:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:30,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:31,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980361545] [2024-06-28 03:20:31,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980361545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:31,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:31,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:31,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378485547] [2024-06-28 03:20:31,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:31,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:31,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:31,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:31,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 429 transitions, 5469 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:31,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:31,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:31,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:33,326 INFO L124 PetriNetUnfolderBase]: 3996/6077 cut-off events. [2024-06-28 03:20:33,327 INFO L125 PetriNetUnfolderBase]: For 1234870/1234874 co-relation queries the response was YES. [2024-06-28 03:20:33,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68032 conditions, 6077 events. 3996/6077 cut-off events. For 1234870/1234874 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 32205 event pairs, 721 based on Foata normal form. 12/6086 useless extension candidates. Maximal degree in co-relation 67895. Up to 5237 conditions per place. [2024-06-28 03:20:33,410 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 317 selfloop transitions, 131 changer transitions 0/469 dead transitions. [2024-06-28 03:20:33,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 469 transitions, 6595 flow [2024-06-28 03:20:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 03:20:33,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159090909090909 [2024-06-28 03:20:33,412 INFO L175 Difference]: Start difference. First operand has 280 places, 429 transitions, 5469 flow. Second operand 10 states and 183 transitions. [2024-06-28 03:20:33,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 469 transitions, 6595 flow [2024-06-28 03:20:35,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 469 transitions, 6396 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:35,205 INFO L231 Difference]: Finished difference. Result has 282 places, 431 transitions, 5646 flow [2024-06-28 03:20:35,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5270, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5646, PETRI_PLACES=282, PETRI_TRANSITIONS=431} [2024-06-28 03:20:35,205 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 237 predicate places. [2024-06-28 03:20:35,205 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 431 transitions, 5646 flow [2024-06-28 03:20:35,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:35,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:35,206 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 03:20:35,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:20:35,206 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 03:20:35,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:35,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1842101086, now seen corresponding path program 3 times [2024-06-28 03:20:35,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:35,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948790731] [2024-06-28 03:20:35,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:35,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:36,601 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 03:20:36,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948790731] [2024-06-28 03:20:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948790731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:36,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:36,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568048417] [2024-06-28 03:20:36,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:36,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:36,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 431 transitions, 5646 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:36,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:36,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:36,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:38,310 INFO L124 PetriNetUnfolderBase]: 4013/6114 cut-off events. [2024-06-28 03:20:38,310 INFO L125 PetriNetUnfolderBase]: For 1263200/1263204 co-relation queries the response was YES. [2024-06-28 03:20:38,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69096 conditions, 6114 events. 4013/6114 cut-off events. For 1263200/1263204 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 32555 event pairs, 721 based on Foata normal form. 8/6119 useless extension candidates. Maximal degree in co-relation 68958. Up to 5180 conditions per place. [2024-06-28 03:20:38,398 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 327 selfloop transitions, 123 changer transitions 0/471 dead transitions. [2024-06-28 03:20:38,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 471 transitions, 6778 flow [2024-06-28 03:20:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 03:20:38,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-28 03:20:38,400 INFO L175 Difference]: Start difference. First operand has 282 places, 431 transitions, 5646 flow. Second operand 10 states and 184 transitions. [2024-06-28 03:20:38,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 471 transitions, 6778 flow [2024-06-28 03:20:39,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 471 transitions, 6426 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:39,865 INFO L231 Difference]: Finished difference. Result has 284 places, 433 transitions, 5655 flow [2024-06-28 03:20:39,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5294, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5655, PETRI_PLACES=284, PETRI_TRANSITIONS=433} [2024-06-28 03:20:39,866 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 239 predicate places. [2024-06-28 03:20:39,866 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 433 transitions, 5655 flow [2024-06-28 03:20:39,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:39,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:39,866 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 03:20:39,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:20:39,867 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 03:20:39,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:39,867 INFO L85 PathProgramCache]: Analyzing trace with hash 749867980, now seen corresponding path program 4 times [2024-06-28 03:20:39,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:39,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827663512] [2024-06-28 03:20:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:39,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:41,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:41,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827663512] [2024-06-28 03:20:41,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827663512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:41,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:41,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:41,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857314433] [2024-06-28 03:20:41,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:41,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:41,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:41,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:41,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 433 transitions, 5655 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:41,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:41,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:41,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:42,841 INFO L124 PetriNetUnfolderBase]: 4046/6171 cut-off events. [2024-06-28 03:20:42,842 INFO L125 PetriNetUnfolderBase]: For 1308906/1308910 co-relation queries the response was YES. [2024-06-28 03:20:42,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70203 conditions, 6171 events. 4046/6171 cut-off events. For 1308906/1308910 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32963 event pairs, 747 based on Foata normal form. 8/6176 useless extension candidates. Maximal degree in co-relation 70064. Up to 5125 conditions per place. [2024-06-28 03:20:42,929 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 336 selfloop transitions, 116 changer transitions 0/473 dead transitions. [2024-06-28 03:20:42,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 473 transitions, 6793 flow [2024-06-28 03:20:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:20:42,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-28 03:20:42,931 INFO L175 Difference]: Start difference. First operand has 284 places, 433 transitions, 5655 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:20:42,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 473 transitions, 6793 flow [2024-06-28 03:20:44,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 473 transitions, 6450 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:44,464 INFO L231 Difference]: Finished difference. Result has 286 places, 435 transitions, 5663 flow [2024-06-28 03:20:44,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5312, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5663, PETRI_PLACES=286, PETRI_TRANSITIONS=435} [2024-06-28 03:20:44,465 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 241 predicate places. [2024-06-28 03:20:44,465 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 435 transitions, 5663 flow [2024-06-28 03:20:44,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:44,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:44,465 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 03:20:44,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:20:44,466 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:44,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:44,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1728869175, now seen corresponding path program 1 times [2024-06-28 03:20:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:44,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003003749] [2024-06-28 03:20:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:45,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003003749] [2024-06-28 03:20:45,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003003749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:45,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:45,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:45,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152521485] [2024-06-28 03:20:45,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:45,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:45,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:45,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:45,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:45,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:45,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 435 transitions, 5663 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:45,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:45,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:45,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:46,738 INFO L124 PetriNetUnfolderBase]: 4090/6202 cut-off events. [2024-06-28 03:20:46,738 INFO L125 PetriNetUnfolderBase]: For 1329106/1329125 co-relation queries the response was YES. [2024-06-28 03:20:46,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69887 conditions, 6202 events. 4090/6202 cut-off events. For 1329106/1329125 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 32848 event pairs, 845 based on Foata normal form. 5/6176 useless extension candidates. Maximal degree in co-relation 69747. Up to 5715 conditions per place. [2024-06-28 03:20:46,824 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 383 selfloop transitions, 30 changer transitions 0/459 dead transitions. [2024-06-28 03:20:46,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 459 transitions, 6843 flow [2024-06-28 03:20:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:20:46,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-28 03:20:46,826 INFO L175 Difference]: Start difference. First operand has 286 places, 435 transitions, 5663 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:20:46,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 459 transitions, 6843 flow [2024-06-28 03:20:48,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 459 transitions, 6510 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:48,590 INFO L231 Difference]: Finished difference. Result has 285 places, 441 transitions, 5530 flow [2024-06-28 03:20:48,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5330, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5530, PETRI_PLACES=285, PETRI_TRANSITIONS=441} [2024-06-28 03:20:48,590 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 240 predicate places. [2024-06-28 03:20:48,591 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 441 transitions, 5530 flow [2024-06-28 03:20:48,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:48,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:48,591 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 03:20:48,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:20:48,591 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:48,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1736487735, now seen corresponding path program 2 times [2024-06-28 03:20:48,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:48,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109872985] [2024-06-28 03:20:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:48,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:49,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:49,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109872985] [2024-06-28 03:20:49,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109872985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:49,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:49,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:20:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540050417] [2024-06-28 03:20:49,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:49,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:20:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:20:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:20:49,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:49,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 441 transitions, 5530 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:49,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:49,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:49,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:50,867 INFO L124 PetriNetUnfolderBase]: 4095/6209 cut-off events. [2024-06-28 03:20:50,867 INFO L125 PetriNetUnfolderBase]: For 1353555/1353574 co-relation queries the response was YES. [2024-06-28 03:20:50,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69934 conditions, 6209 events. 4095/6209 cut-off events. For 1353555/1353574 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 32940 event pairs, 845 based on Foata normal form. 5/6183 useless extension candidates. Maximal degree in co-relation 69793. Up to 5745 conditions per place. [2024-06-28 03:20:50,947 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 385 selfloop transitions, 27 changer transitions 0/458 dead transitions. [2024-06-28 03:20:50,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 458 transitions, 6468 flow [2024-06-28 03:20:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:20:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:20:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 03:20:50,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39935064935064934 [2024-06-28 03:20:50,948 INFO L175 Difference]: Start difference. First operand has 285 places, 441 transitions, 5530 flow. Second operand 7 states and 123 transitions. [2024-06-28 03:20:50,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 458 transitions, 6468 flow [2024-06-28 03:20:52,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 458 transitions, 6345 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 03:20:52,575 INFO L231 Difference]: Finished difference. Result has 289 places, 444 transitions, 5543 flow [2024-06-28 03:20:52,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5427, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5543, PETRI_PLACES=289, PETRI_TRANSITIONS=444} [2024-06-28 03:20:52,575 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 244 predicate places. [2024-06-28 03:20:52,575 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 444 transitions, 5543 flow [2024-06-28 03:20:52,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:52,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:52,576 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 03:20:52,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:20:52,576 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 03:20:52,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:52,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1561166132, now seen corresponding path program 5 times [2024-06-28 03:20:52,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:52,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624578709] [2024-06-28 03:20:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624578709] [2024-06-28 03:20:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624578709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:53,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:53,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:53,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168524729] [2024-06-28 03:20:53,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:53,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:53,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:53,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:53,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:54,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:54,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 444 transitions, 5543 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:54,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:54,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:54,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:55,689 INFO L124 PetriNetUnfolderBase]: 4077/6227 cut-off events. [2024-06-28 03:20:55,690 INFO L125 PetriNetUnfolderBase]: For 1402501/1402501 co-relation queries the response was YES. [2024-06-28 03:20:55,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71301 conditions, 6227 events. 4077/6227 cut-off events. For 1402501/1402501 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 33410 event pairs, 729 based on Foata normal form. 8/6232 useless extension candidates. Maximal degree in co-relation 71158. Up to 5109 conditions per place. [2024-06-28 03:20:55,772 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 310 selfloop transitions, 152 changer transitions 0/483 dead transitions. [2024-06-28 03:20:55,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 483 transitions, 6707 flow [2024-06-28 03:20:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:20:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:20:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:20:55,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-28 03:20:55,773 INFO L175 Difference]: Start difference. First operand has 289 places, 444 transitions, 5543 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:20:55,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 483 transitions, 6707 flow [2024-06-28 03:20:57,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 483 transitions, 6619 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:20:57,427 INFO L231 Difference]: Finished difference. Result has 294 places, 446 transitions, 5883 flow [2024-06-28 03:20:57,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5455, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5883, PETRI_PLACES=294, PETRI_TRANSITIONS=446} [2024-06-28 03:20:57,428 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 249 predicate places. [2024-06-28 03:20:57,428 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 446 transitions, 5883 flow [2024-06-28 03:20:57,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:57,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:57,428 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 03:20:57,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:20:57,428 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 03:20:57,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -231634514, now seen corresponding path program 6 times [2024-06-28 03:20:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:57,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077454876] [2024-06-28 03:20:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:57,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:58,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:58,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077454876] [2024-06-28 03:20:58,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077454876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:58,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:58,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:20:58,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979325684] [2024-06-28 03:20:58,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:58,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:20:58,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:20:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:20:58,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:20:58,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 446 transitions, 5883 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:20:58,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:58,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:20:58,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:00,568 INFO L124 PetriNetUnfolderBase]: 4262/6529 cut-off events. [2024-06-28 03:21:00,568 INFO L125 PetriNetUnfolderBase]: For 1549439/1549444 co-relation queries the response was YES. [2024-06-28 03:21:00,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78130 conditions, 6529 events. 4262/6529 cut-off events. For 1549439/1549444 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 35604 event pairs, 763 based on Foata normal form. 4/6523 useless extension candidates. Maximal degree in co-relation 77986. Up to 5151 conditions per place. [2024-06-28 03:21:00,653 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 315 selfloop transitions, 157 changer transitions 0/493 dead transitions. [2024-06-28 03:21:00,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 493 transitions, 7527 flow [2024-06-28 03:21:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:21:00,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-28 03:21:00,654 INFO L175 Difference]: Start difference. First operand has 294 places, 446 transitions, 5883 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:21:00,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 493 transitions, 7527 flow [2024-06-28 03:21:02,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 493 transitions, 7119 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:02,268 INFO L231 Difference]: Finished difference. Result has 296 places, 450 transitions, 6032 flow [2024-06-28 03:21:02,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5475, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6032, PETRI_PLACES=296, PETRI_TRANSITIONS=450} [2024-06-28 03:21:02,269 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 251 predicate places. [2024-06-28 03:21:02,269 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 450 transitions, 6032 flow [2024-06-28 03:21:02,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:02,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:02,270 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 03:21:02,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:21:02,270 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 03:21:02,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -224954510, now seen corresponding path program 1 times [2024-06-28 03:21:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:02,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680342569] [2024-06-28 03:21:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680342569] [2024-06-28 03:21:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680342569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:03,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:03,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184055818] [2024-06-28 03:21:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:03,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:03,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:03,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:03,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:21:03,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 450 transitions, 6032 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:21:03,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:03,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:21:03,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:05,640 INFO L124 PetriNetUnfolderBase]: 4647/6979 cut-off events. [2024-06-28 03:21:05,640 INFO L125 PetriNetUnfolderBase]: For 1663379/1663379 co-relation queries the response was YES. [2024-06-28 03:21:05,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81022 conditions, 6979 events. 4647/6979 cut-off events. For 1663379/1663379 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 36975 event pairs, 860 based on Foata normal form. 24/7000 useless extension candidates. Maximal degree in co-relation 80877. Up to 5848 conditions per place. [2024-06-28 03:21:05,727 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 321 selfloop transitions, 166 changer transitions 0/498 dead transitions. [2024-06-28 03:21:05,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 498 transitions, 7292 flow [2024-06-28 03:21:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:21:05,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:21:05,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-28 03:21:05,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:21:05,728 INFO L175 Difference]: Start difference. First operand has 296 places, 450 transitions, 6032 flow. Second operand 11 states and 198 transitions. [2024-06-28 03:21:05,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 498 transitions, 7292 flow [2024-06-28 03:21:07,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 498 transitions, 6952 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:07,637 INFO L231 Difference]: Finished difference. Result has 300 places, 452 transitions, 6145 flow [2024-06-28 03:21:07,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5692, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6145, PETRI_PLACES=300, PETRI_TRANSITIONS=452} [2024-06-28 03:21:07,638 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 255 predicate places. [2024-06-28 03:21:07,638 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 452 transitions, 6145 flow [2024-06-28 03:21:07,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:21:07,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:07,638 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 03:21:07,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:21:07,639 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 03:21:07,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash -225200774, now seen corresponding path program 7 times [2024-06-28 03:21:07,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:07,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184556812] [2024-06-28 03:21:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:08,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:08,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184556812] [2024-06-28 03:21:08,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184556812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:08,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:08,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:08,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260515769] [2024-06-28 03:21:08,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:08,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:08,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:08,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:09,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:09,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 452 transitions, 6145 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:09,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:09,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:09,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:10,853 INFO L124 PetriNetUnfolderBase]: 4313/6617 cut-off events. [2024-06-28 03:21:10,853 INFO L125 PetriNetUnfolderBase]: For 1607124/1607124 co-relation queries the response was YES. [2024-06-28 03:21:10,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77405 conditions, 6617 events. 4313/6617 cut-off events. For 1607124/1607124 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 36243 event pairs, 762 based on Foata normal form. 28/6642 useless extension candidates. Maximal degree in co-relation 77259. Up to 5369 conditions per place. [2024-06-28 03:21:10,947 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 308 selfloop transitions, 164 changer transitions 0/493 dead transitions. [2024-06-28 03:21:10,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 493 transitions, 7249 flow [2024-06-28 03:21:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:21:10,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-28 03:21:10,948 INFO L175 Difference]: Start difference. First operand has 300 places, 452 transitions, 6145 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:21:10,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 493 transitions, 7249 flow [2024-06-28 03:21:12,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 493 transitions, 6766 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:12,988 INFO L231 Difference]: Finished difference. Result has 301 places, 452 transitions, 6000 flow [2024-06-28 03:21:12,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5662, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6000, PETRI_PLACES=301, PETRI_TRANSITIONS=452} [2024-06-28 03:21:12,989 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 256 predicate places. [2024-06-28 03:21:12,989 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 452 transitions, 6000 flow [2024-06-28 03:21:12,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:12,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:12,990 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 03:21:12,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:21:12,990 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 03:21:12,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash -402332294, now seen corresponding path program 8 times [2024-06-28 03:21:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:12,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881707290] [2024-06-28 03:21:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:14,407 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 03:21:14,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:14,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881707290] [2024-06-28 03:21:14,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881707290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:14,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:14,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:14,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802502103] [2024-06-28 03:21:14,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:14,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:14,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:14,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:14,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:14,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 452 transitions, 6000 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:14,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:14,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:14,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:16,329 INFO L124 PetriNetUnfolderBase]: 4326/6646 cut-off events. [2024-06-28 03:21:16,329 INFO L125 PetriNetUnfolderBase]: For 1550221/1550221 co-relation queries the response was YES. [2024-06-28 03:21:16,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76207 conditions, 6646 events. 4326/6646 cut-off events. For 1550221/1550221 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36509 event pairs, 799 based on Foata normal form. 8/6651 useless extension candidates. Maximal degree in co-relation 76060. Up to 5508 conditions per place. [2024-06-28 03:21:16,418 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 329 selfloop transitions, 141 changer transitions 0/491 dead transitions. [2024-06-28 03:21:16,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 491 transitions, 7188 flow [2024-06-28 03:21:16,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:21:16,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42954545454545456 [2024-06-28 03:21:16,419 INFO L175 Difference]: Start difference. First operand has 301 places, 452 transitions, 6000 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:21:16,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 491 transitions, 7188 flow [2024-06-28 03:21:18,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 491 transitions, 6847 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:18,395 INFO L231 Difference]: Finished difference. Result has 302 places, 454 transitions, 6073 flow [2024-06-28 03:21:18,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5659, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6073, PETRI_PLACES=302, PETRI_TRANSITIONS=454} [2024-06-28 03:21:18,396 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 257 predicate places. [2024-06-28 03:21:18,396 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 454 transitions, 6073 flow [2024-06-28 03:21:18,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:18,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:18,396 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 03:21:18,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:21:18,396 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 03:21:18,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash -402336944, now seen corresponding path program 9 times [2024-06-28 03:21:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:18,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961883418] [2024-06-28 03:21:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:18,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:19,757 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 03:21:19,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:19,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961883418] [2024-06-28 03:21:19,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961883418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:19,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:19,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:19,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199025729] [2024-06-28 03:21:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:19,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:19,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:19,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:19,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:19,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 454 transitions, 6073 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:19,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:19,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:19,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:21,774 INFO L124 PetriNetUnfolderBase]: 4343/6683 cut-off events. [2024-06-28 03:21:21,774 INFO L125 PetriNetUnfolderBase]: For 1577427/1577427 co-relation queries the response was YES. [2024-06-28 03:21:21,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77032 conditions, 6683 events. 4343/6683 cut-off events. For 1577427/1577427 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 36861 event pairs, 799 based on Foata normal form. 4/6684 useless extension candidates. Maximal degree in co-relation 76884. Up to 5494 conditions per place. [2024-06-28 03:21:21,867 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 328 selfloop transitions, 144 changer transitions 0/493 dead transitions. [2024-06-28 03:21:21,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 493 transitions, 7267 flow [2024-06-28 03:21:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:21:21,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:21:21,868 INFO L175 Difference]: Start difference. First operand has 302 places, 454 transitions, 6073 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:21:21,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 493 transitions, 7267 flow [2024-06-28 03:21:23,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 493 transitions, 6873 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:23,848 INFO L231 Difference]: Finished difference. Result has 304 places, 456 transitions, 6102 flow [2024-06-28 03:21:23,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5679, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6102, PETRI_PLACES=304, PETRI_TRANSITIONS=456} [2024-06-28 03:21:23,848 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 259 predicate places. [2024-06-28 03:21:23,848 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 456 transitions, 6102 flow [2024-06-28 03:21:23,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:23,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:23,848 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 03:21:23,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:21:23,849 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 03:21:23,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1731988532, now seen corresponding path program 10 times [2024-06-28 03:21:23,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:23,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893753009] [2024-06-28 03:21:23,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:23,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:25,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:25,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893753009] [2024-06-28 03:21:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893753009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:25,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:25,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:21:25,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668493485] [2024-06-28 03:21:25,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:25,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:21:25,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:21:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:21:25,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:25,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 456 transitions, 6102 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:25,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:25,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:25,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:26,987 INFO L124 PetriNetUnfolderBase]: 4376/6740 cut-off events. [2024-06-28 03:21:26,987 INFO L125 PetriNetUnfolderBase]: For 1628346/1628346 co-relation queries the response was YES. [2024-06-28 03:21:27,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78236 conditions, 6740 events. 4376/6740 cut-off events. For 1628346/1628346 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 37289 event pairs, 806 based on Foata normal form. 4/6741 useless extension candidates. Maximal degree in co-relation 78087. Up to 5249 conditions per place. [2024-06-28 03:21:27,077 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 323 selfloop transitions, 155 changer transitions 0/499 dead transitions. [2024-06-28 03:21:27,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 499 transitions, 7342 flow [2024-06-28 03:21:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:21:27,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-28 03:21:27,078 INFO L175 Difference]: Start difference. First operand has 304 places, 456 transitions, 6102 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:21:27,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 499 transitions, 7342 flow [2024-06-28 03:21:29,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 499 transitions, 6937 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:29,047 INFO L231 Difference]: Finished difference. Result has 306 places, 458 transitions, 6146 flow [2024-06-28 03:21:29,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5697, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6146, PETRI_PLACES=306, PETRI_TRANSITIONS=458} [2024-06-28 03:21:29,048 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 261 predicate places. [2024-06-28 03:21:29,048 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 458 transitions, 6146 flow [2024-06-28 03:21:29,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:21:29,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:29,049 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 03:21:29,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:21:29,049 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:29,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1725384620, now seen corresponding path program 1 times [2024-06-28 03:21:29,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:29,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144564967] [2024-06-28 03:21:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:29,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:29,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:29,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144564967] [2024-06-28 03:21:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144564967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:29,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:29,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487560138] [2024-06-28 03:21:29,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:29,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:30,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:21:30,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 458 transitions, 6146 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:21:30,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:30,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:21:30,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:31,909 INFO L124 PetriNetUnfolderBase]: 4605/6947 cut-off events. [2024-06-28 03:21:31,909 INFO L125 PetriNetUnfolderBase]: For 1648618/1648637 co-relation queries the response was YES. [2024-06-28 03:21:31,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78837 conditions, 6947 events. 4605/6947 cut-off events. For 1648618/1648637 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 37309 event pairs, 939 based on Foata normal form. 6/6908 useless extension candidates. Maximal degree in co-relation 78687. Up to 6458 conditions per place. [2024-06-28 03:21:32,003 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 376 selfloop transitions, 74 changer transitions 0/488 dead transitions. [2024-06-28 03:21:32,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 488 transitions, 7410 flow [2024-06-28 03:21:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:21:32,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-28 03:21:32,004 INFO L175 Difference]: Start difference. First operand has 306 places, 458 transitions, 6146 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:21:32,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 488 transitions, 7410 flow [2024-06-28 03:21:34,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 488 transitions, 6979 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:34,086 INFO L231 Difference]: Finished difference. Result has 306 places, 464 transitions, 5975 flow [2024-06-28 03:21:34,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5975, PETRI_PLACES=306, PETRI_TRANSITIONS=464} [2024-06-28 03:21:34,086 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 261 predicate places. [2024-06-28 03:21:34,086 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 464 transitions, 5975 flow [2024-06-28 03:21:34,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:21:34,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:34,086 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 03:21:34,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:21:34,087 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:34,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1736484170, now seen corresponding path program 2 times [2024-06-28 03:21:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:34,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140662690] [2024-06-28 03:21:34,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:34,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140662690] [2024-06-28 03:21:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140662690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:34,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:34,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:34,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623341992] [2024-06-28 03:21:34,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:34,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:34,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:34,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:35,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:21:35,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 464 transitions, 5975 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:21:35,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:35,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:21:35,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:36,734 INFO L124 PetriNetUnfolderBase]: 4633/6981 cut-off events. [2024-06-28 03:21:36,734 INFO L125 PetriNetUnfolderBase]: For 1681690/1681705 co-relation queries the response was YES. [2024-06-28 03:21:36,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79107 conditions, 6981 events. 4633/6981 cut-off events. For 1681690/1681705 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 37449 event pairs, 918 based on Foata normal form. 2/6938 useless extension candidates. Maximal degree in co-relation 78956. Up to 6483 conditions per place. [2024-06-28 03:21:37,052 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 377 selfloop transitions, 76 changer transitions 0/491 dead transitions. [2024-06-28 03:21:37,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 491 transitions, 7435 flow [2024-06-28 03:21:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:37,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:21:37,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-28 03:21:37,054 INFO L175 Difference]: Start difference. First operand has 306 places, 464 transitions, 5975 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:21:37,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 491 transitions, 7435 flow [2024-06-28 03:21:39,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 491 transitions, 7317 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:39,364 INFO L231 Difference]: Finished difference. Result has 310 places, 470 transitions, 6127 flow [2024-06-28 03:21:39,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5873, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6127, PETRI_PLACES=310, PETRI_TRANSITIONS=470} [2024-06-28 03:21:39,364 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 265 predicate places. [2024-06-28 03:21:39,365 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 470 transitions, 6127 flow [2024-06-28 03:21:39,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:21:39,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:39,365 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 03:21:39,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:21:39,365 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:39,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 549574558, now seen corresponding path program 3 times [2024-06-28 03:21:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:39,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676187079] [2024-06-28 03:21:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:39,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:40,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:40,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676187079] [2024-06-28 03:21:40,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676187079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:40,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:40,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:40,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847961085] [2024-06-28 03:21:40,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:40,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:40,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:40,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:40,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:21:40,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 470 transitions, 6127 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:21:40,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:40,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:21:40,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:42,059 INFO L124 PetriNetUnfolderBase]: 4627/6973 cut-off events. [2024-06-28 03:21:42,059 INFO L125 PetriNetUnfolderBase]: For 1705814/1705829 co-relation queries the response was YES. [2024-06-28 03:21:42,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79285 conditions, 6973 events. 4627/6973 cut-off events. For 1705814/1705829 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 37365 event pairs, 917 based on Foata normal form. 2/6930 useless extension candidates. Maximal degree in co-relation 79132. Up to 6478 conditions per place. [2024-06-28 03:21:42,163 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 375 selfloop transitions, 77 changer transitions 0/490 dead transitions. [2024-06-28 03:21:42,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 490 transitions, 7285 flow [2024-06-28 03:21:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:21:42,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-28 03:21:42,164 INFO L175 Difference]: Start difference. First operand has 310 places, 470 transitions, 6127 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:21:42,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 490 transitions, 7285 flow [2024-06-28 03:21:44,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 490 transitions, 7128 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:44,924 INFO L231 Difference]: Finished difference. Result has 314 places, 470 transitions, 6130 flow [2024-06-28 03:21:44,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5970, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6130, PETRI_PLACES=314, PETRI_TRANSITIONS=470} [2024-06-28 03:21:44,924 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 269 predicate places. [2024-06-28 03:21:44,924 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 470 transitions, 6130 flow [2024-06-28 03:21:44,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:21:44,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:44,925 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 03:21:44,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:21:44,925 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:44,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:44,925 INFO L85 PathProgramCache]: Analyzing trace with hash 549575023, now seen corresponding path program 1 times [2024-06-28 03:21:44,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:44,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197879111] [2024-06-28 03:21:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:44,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:45,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:45,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197879111] [2024-06-28 03:21:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197879111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:45,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:45,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021232658] [2024-06-28 03:21:45,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:45,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:45,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:21:45,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 470 transitions, 6130 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:21:45,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:45,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:21:45,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:47,630 INFO L124 PetriNetUnfolderBase]: 4630/6978 cut-off events. [2024-06-28 03:21:47,631 INFO L125 PetriNetUnfolderBase]: For 1734621/1734640 co-relation queries the response was YES. [2024-06-28 03:21:47,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79601 conditions, 6978 events. 4630/6978 cut-off events. For 1734621/1734640 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 37370 event pairs, 955 based on Foata normal form. 5/6938 useless extension candidates. Maximal degree in co-relation 79447. Up to 6640 conditions per place. [2024-06-28 03:21:47,731 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 417 selfloop transitions, 40 changer transitions 0/495 dead transitions. [2024-06-28 03:21:47,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 495 transitions, 7406 flow [2024-06-28 03:21:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:47,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:21:47,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-28 03:21:47,732 INFO L175 Difference]: Start difference. First operand has 314 places, 470 transitions, 6130 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:21:47,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 495 transitions, 7406 flow [2024-06-28 03:21:50,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 495 transitions, 7244 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:21:50,659 INFO L231 Difference]: Finished difference. Result has 316 places, 479 transitions, 6197 flow [2024-06-28 03:21:50,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5968, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6197, PETRI_PLACES=316, PETRI_TRANSITIONS=479} [2024-06-28 03:21:50,659 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 271 predicate places. [2024-06-28 03:21:50,659 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 479 transitions, 6197 flow [2024-06-28 03:21:50,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:21:50,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:50,660 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 03:21:50,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:21:50,660 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:50,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2102267487, now seen corresponding path program 3 times [2024-06-28 03:21:50,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:50,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385244792] [2024-06-28 03:21:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:50,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:51,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:51,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385244792] [2024-06-28 03:21:51,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385244792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:51,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:51,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:51,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084321000] [2024-06-28 03:21:51,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:51,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:51,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:51,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:51,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:51,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 479 transitions, 6197 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 03:21:51,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:51,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:51,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:53,146 INFO L124 PetriNetUnfolderBase]: 4495/6846 cut-off events. [2024-06-28 03:21:53,146 INFO L125 PetriNetUnfolderBase]: For 1772729/1772756 co-relation queries the response was YES. [2024-06-28 03:21:53,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79530 conditions, 6846 events. 4495/6846 cut-off events. For 1772729/1772756 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 37262 event pairs, 917 based on Foata normal form. 9/6806 useless extension candidates. Maximal degree in co-relation 79374. Up to 6316 conditions per place. [2024-06-28 03:21:53,241 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 406 selfloop transitions, 46 changer transitions 0/502 dead transitions. [2024-06-28 03:21:53,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 502 transitions, 7691 flow [2024-06-28 03:21:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:21:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:21:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:21:53,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-28 03:21:53,242 INFO L175 Difference]: Start difference. First operand has 316 places, 479 transitions, 6197 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:21:53,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 502 transitions, 7691 flow [2024-06-28 03:21:55,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 502 transitions, 7623 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:21:55,428 INFO L231 Difference]: Finished difference. Result has 320 places, 485 transitions, 6381 flow [2024-06-28 03:21:55,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6129, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6381, PETRI_PLACES=320, PETRI_TRANSITIONS=485} [2024-06-28 03:21:55,429 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 275 predicate places. [2024-06-28 03:21:55,429 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 485 transitions, 6381 flow [2024-06-28 03:21:55,429 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 03:21:55,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:55,429 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 03:21:55,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:21:55,429 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:55,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2102712957, now seen corresponding path program 4 times [2024-06-28 03:21:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:55,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839450747] [2024-06-28 03:21:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:55,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:56,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:56,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839450747] [2024-06-28 03:21:56,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839450747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:56,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:56,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:21:56,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432254165] [2024-06-28 03:21:56,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:56,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:21:56,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:56,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:21:56,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:21:56,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:21:56,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 485 transitions, 6381 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:56,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:56,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:21:56,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:58,069 INFO L124 PetriNetUnfolderBase]: 4500/6853 cut-off events. [2024-06-28 03:21:58,069 INFO L125 PetriNetUnfolderBase]: For 1810383/1810410 co-relation queries the response was YES. [2024-06-28 03:21:58,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80444 conditions, 6853 events. 4500/6853 cut-off events. For 1810383/1810410 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 37325 event pairs, 908 based on Foata normal form. 9/6813 useless extension candidates. Maximal degree in co-relation 80285. Up to 6322 conditions per place. [2024-06-28 03:21:58,165 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 400 selfloop transitions, 51 changer transitions 0/501 dead transitions. [2024-06-28 03:21:58,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 501 transitions, 7599 flow [2024-06-28 03:21:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:58,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:21:58,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-28 03:21:58,166 INFO L175 Difference]: Start difference. First operand has 320 places, 485 transitions, 6381 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:21:58,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 501 transitions, 7599 flow [2024-06-28 03:22:00,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 501 transitions, 7422 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-28 03:22:00,480 INFO L231 Difference]: Finished difference. Result has 325 places, 488 transitions, 6392 flow [2024-06-28 03:22:00,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6236, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6392, PETRI_PLACES=325, PETRI_TRANSITIONS=488} [2024-06-28 03:22:00,481 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 280 predicate places. [2024-06-28 03:22:00,481 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 488 transitions, 6392 flow [2024-06-28 03:22:00,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:00,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:00,481 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 03:22:00,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:22:00,481 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:00,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:00,482 INFO L85 PathProgramCache]: Analyzing trace with hash -223356583, now seen corresponding path program 5 times [2024-06-28 03:22:00,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:00,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526693459] [2024-06-28 03:22:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:00,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526693459] [2024-06-28 03:22:01,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526693459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:01,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:01,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:01,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211023872] [2024-06-28 03:22:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:01,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:01,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:01,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:01,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:22:01,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 488 transitions, 6392 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:01,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:01,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:22:01,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:03,144 INFO L124 PetriNetUnfolderBase]: 4497/6849 cut-off events. [2024-06-28 03:22:03,145 INFO L125 PetriNetUnfolderBase]: For 1838486/1838513 co-relation queries the response was YES. [2024-06-28 03:22:03,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80628 conditions, 6849 events. 4497/6849 cut-off events. For 1838486/1838513 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 37297 event pairs, 914 based on Foata normal form. 9/6809 useless extension candidates. Maximal degree in co-relation 80467. Up to 6366 conditions per place. [2024-06-28 03:22:03,254 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 414 selfloop transitions, 34 changer transitions 0/498 dead transitions. [2024-06-28 03:22:03,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 498 transitions, 7514 flow [2024-06-28 03:22:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:22:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:22:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 03:22:03,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:22:03,255 INFO L175 Difference]: Start difference. First operand has 325 places, 488 transitions, 6392 flow. Second operand 7 states and 119 transitions. [2024-06-28 03:22:03,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 498 transitions, 7514 flow [2024-06-28 03:22:06,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 498 transitions, 7378 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:22:06,081 INFO L231 Difference]: Finished difference. Result has 327 places, 488 transitions, 6330 flow [2024-06-28 03:22:06,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6256, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6330, PETRI_PLACES=327, PETRI_TRANSITIONS=488} [2024-06-28 03:22:06,082 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 282 predicate places. [2024-06-28 03:22:06,083 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 488 transitions, 6330 flow [2024-06-28 03:22:06,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:06,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:06,083 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 03:22:06,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:22:06,083 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:06,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:06,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1664099127, now seen corresponding path program 6 times [2024-06-28 03:22:06,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:06,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370651234] [2024-06-28 03:22:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:06,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:06,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:06,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370651234] [2024-06-28 03:22:06,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370651234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:06,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:06,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:06,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182055599] [2024-06-28 03:22:06,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:06,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:06,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:06,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:06,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:07,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:22:07,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 488 transitions, 6330 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:07,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:07,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:22:07,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:08,584 INFO L124 PetriNetUnfolderBase]: 4496/6847 cut-off events. [2024-06-28 03:22:08,584 INFO L125 PetriNetUnfolderBase]: For 1867041/1867068 co-relation queries the response was YES. [2024-06-28 03:22:08,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80759 conditions, 6847 events. 4496/6847 cut-off events. For 1867041/1867068 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 37255 event pairs, 916 based on Foata normal form. 9/6807 useless extension candidates. Maximal degree in co-relation 80597. Up to 6372 conditions per place. [2024-06-28 03:22:08,686 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 421 selfloop transitions, 26 changer transitions 0/497 dead transitions. [2024-06-28 03:22:08,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 497 transitions, 7250 flow [2024-06-28 03:22:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:22:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:22:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 03:22:08,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37987012987012986 [2024-06-28 03:22:08,687 INFO L175 Difference]: Start difference. First operand has 327 places, 488 transitions, 6330 flow. Second operand 7 states and 117 transitions. [2024-06-28 03:22:08,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 497 transitions, 7250 flow [2024-06-28 03:22:11,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 497 transitions, 7114 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:22:11,571 INFO L231 Difference]: Finished difference. Result has 328 places, 488 transitions, 6252 flow [2024-06-28 03:22:11,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6194, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6252, PETRI_PLACES=328, PETRI_TRANSITIONS=488} [2024-06-28 03:22:11,571 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 283 predicate places. [2024-06-28 03:22:11,572 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 488 transitions, 6252 flow [2024-06-28 03:22:11,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:11,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:11,572 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 03:22:11,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:22:11,572 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 03:22:11,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash 667759070, now seen corresponding path program 11 times [2024-06-28 03:22:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:11,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88313978] [2024-06-28 03:22:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:11,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:13,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:13,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88313978] [2024-06-28 03:22:13,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88313978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:13,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:13,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:13,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861796872] [2024-06-28 03:22:13,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:13,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:13,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:22:13,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 488 transitions, 6252 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:22:13,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:13,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:22:13,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:14,874 INFO L124 PetriNetUnfolderBase]: 4439/6838 cut-off events. [2024-06-28 03:22:14,874 INFO L125 PetriNetUnfolderBase]: For 1927542/1927548 co-relation queries the response was YES. [2024-06-28 03:22:14,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82048 conditions, 6838 events. 4439/6838 cut-off events. For 1927542/1927548 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 37903 event pairs, 763 based on Foata normal form. 12/6831 useless extension candidates. Maximal degree in co-relation 81885. Up to 5065 conditions per place. [2024-06-28 03:22:14,974 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 262 selfloop transitions, 241 changer transitions 0/528 dead transitions. [2024-06-28 03:22:14,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 528 transitions, 7866 flow [2024-06-28 03:22:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:22:14,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-28 03:22:14,975 INFO L175 Difference]: Start difference. First operand has 328 places, 488 transitions, 6252 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:22:14,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 528 transitions, 7866 flow [2024-06-28 03:22:17,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 528 transitions, 7786 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:17,915 INFO L231 Difference]: Finished difference. Result has 331 places, 490 transitions, 6798 flow [2024-06-28 03:22:17,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6172, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6798, PETRI_PLACES=331, PETRI_TRANSITIONS=490} [2024-06-28 03:22:17,915 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 286 predicate places. [2024-06-28 03:22:17,915 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 490 transitions, 6798 flow [2024-06-28 03:22:17,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:22:17,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:17,916 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 03:22:17,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:22:17,916 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 03:22:17,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:17,916 INFO L85 PathProgramCache]: Analyzing trace with hash 667581440, now seen corresponding path program 12 times [2024-06-28 03:22:17,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:17,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177413866] [2024-06-28 03:22:17,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:17,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177413866] [2024-06-28 03:22:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177413866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:19,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:19,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:19,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584894786] [2024-06-28 03:22:19,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:19,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:19,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:19,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:22:19,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 490 transitions, 6798 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:22:19,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:19,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:22:19,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:21,291 INFO L124 PetriNetUnfolderBase]: 4624/7145 cut-off events. [2024-06-28 03:22:21,291 INFO L125 PetriNetUnfolderBase]: For 2118789/2118795 co-relation queries the response was YES. [2024-06-28 03:22:21,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90118 conditions, 7145 events. 4624/7145 cut-off events. For 2118789/2118795 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 40110 event pairs, 797 based on Foata normal form. 8/7134 useless extension candidates. Maximal degree in co-relation 89954. Up to 5077 conditions per place. [2024-06-28 03:22:21,397 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 267 selfloop transitions, 246 changer transitions 0/538 dead transitions. [2024-06-28 03:22:21,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 538 transitions, 8962 flow [2024-06-28 03:22:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 03:22:21,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:22:21,398 INFO L175 Difference]: Start difference. First operand has 331 places, 490 transitions, 6798 flow. Second operand 10 states and 200 transitions. [2024-06-28 03:22:21,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 538 transitions, 8962 flow [2024-06-28 03:22:24,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 538 transitions, 8356 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:24,634 INFO L231 Difference]: Finished difference. Result has 333 places, 494 transitions, 6967 flow [2024-06-28 03:22:24,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6192, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6967, PETRI_PLACES=333, PETRI_TRANSITIONS=494} [2024-06-28 03:22:24,634 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 288 predicate places. [2024-06-28 03:22:24,634 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 494 transitions, 6967 flow [2024-06-28 03:22:24,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:22:24,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:24,635 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 03:22:24,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:22:24,635 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 03:22:24,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 674015180, now seen corresponding path program 13 times [2024-06-28 03:22:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:24,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225787734] [2024-06-28 03:22:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:24,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:26,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:26,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225787734] [2024-06-28 03:22:26,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225787734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:26,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:26,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:26,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601221092] [2024-06-28 03:22:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:26,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:26,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:26,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:26,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:22:26,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 494 transitions, 6967 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:22:26,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:26,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:22:26,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:28,026 INFO L124 PetriNetUnfolderBase]: 4720/7306 cut-off events. [2024-06-28 03:22:28,026 INFO L125 PetriNetUnfolderBase]: For 2281704/2281715 co-relation queries the response was YES. [2024-06-28 03:22:28,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92269 conditions, 7306 events. 4720/7306 cut-off events. For 2281704/2281715 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41403 event pairs, 819 based on Foata normal form. 32/7312 useless extension candidates. Maximal degree in co-relation 92104. Up to 5411 conditions per place. [2024-06-28 03:22:28,133 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 280 selfloop transitions, 233 changer transitions 0/538 dead transitions. [2024-06-28 03:22:28,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 538 transitions, 8651 flow [2024-06-28 03:22:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 03:22:28,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-28 03:22:28,134 INFO L175 Difference]: Start difference. First operand has 333 places, 494 transitions, 6967 flow. Second operand 10 states and 199 transitions. [2024-06-28 03:22:28,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 538 transitions, 8651 flow [2024-06-28 03:22:31,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 538 transitions, 8146 flow, removed 86 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:31,927 INFO L231 Difference]: Finished difference. Result has 335 places, 496 transitions, 7082 flow [2024-06-28 03:22:31,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6480, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7082, PETRI_PLACES=335, PETRI_TRANSITIONS=496} [2024-06-28 03:22:31,927 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 290 predicate places. [2024-06-28 03:22:31,928 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 496 transitions, 7082 flow [2024-06-28 03:22:31,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:22:31,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:31,928 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 03:22:31,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:22:31,928 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 03:22:31,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:31,928 INFO L85 PathProgramCache]: Analyzing trace with hash 674261444, now seen corresponding path program 2 times [2024-06-28 03:22:31,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:31,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279823486] [2024-06-28 03:22:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:31,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:33,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:33,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279823486] [2024-06-28 03:22:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279823486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:33,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:33,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259809374] [2024-06-28 03:22:33,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:33,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:33,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:33,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:33,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:33,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:22:33,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 496 transitions, 7082 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:22:33,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:33,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:22:33,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:35,580 INFO L124 PetriNetUnfolderBase]: 5177/7828 cut-off events. [2024-06-28 03:22:35,580 INFO L125 PetriNetUnfolderBase]: For 2302387/2302393 co-relation queries the response was YES. [2024-06-28 03:22:35,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95052 conditions, 7828 events. 5177/7828 cut-off events. For 2302387/2302393 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 42910 event pairs, 934 based on Foata normal form. 28/7837 useless extension candidates. Maximal degree in co-relation 94887. Up to 6214 conditions per place. [2024-06-28 03:22:35,697 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 313 selfloop transitions, 215 changer transitions 0/543 dead transitions. [2024-06-28 03:22:35,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 543 transitions, 8442 flow [2024-06-28 03:22:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 03:22:35,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214876033057851 [2024-06-28 03:22:35,699 INFO L175 Difference]: Start difference. First operand has 335 places, 496 transitions, 7082 flow. Second operand 11 states and 204 transitions. [2024-06-28 03:22:35,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 543 transitions, 8442 flow [2024-06-28 03:22:39,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 543 transitions, 7888 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:39,342 INFO L231 Difference]: Finished difference. Result has 338 places, 498 transitions, 7097 flow [2024-06-28 03:22:39,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6528, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7097, PETRI_PLACES=338, PETRI_TRANSITIONS=498} [2024-06-28 03:22:39,343 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 293 predicate places. [2024-06-28 03:22:39,343 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 498 transitions, 7097 flow [2024-06-28 03:22:39,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:22:39,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:39,343 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 03:22:39,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:22:39,343 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 03:22:39,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 331061862, now seen corresponding path program 3 times [2024-06-28 03:22:39,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:39,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935300099] [2024-06-28 03:22:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:39,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:40,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:40,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:40,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935300099] [2024-06-28 03:22:40,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935300099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:40,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:40,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200549294] [2024-06-28 03:22:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:40,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:40,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:41,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:22:41,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 498 transitions, 7097 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:22:41,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:41,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:22:41,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:43,053 INFO L124 PetriNetUnfolderBase]: 5194/7853 cut-off events. [2024-06-28 03:22:43,054 INFO L125 PetriNetUnfolderBase]: For 2247901/2247913 co-relation queries the response was YES. [2024-06-28 03:22:43,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95067 conditions, 7853 events. 5194/7853 cut-off events. For 2247901/2247913 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 43138 event pairs, 1071 based on Foata normal form. 12/7858 useless extension candidates. Maximal degree in co-relation 94901. Up to 7401 conditions per place. [2024-06-28 03:22:43,173 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 439 selfloop transitions, 85 changer transitions 0/539 dead transitions. [2024-06-28 03:22:43,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 539 transitions, 8409 flow [2024-06-28 03:22:43,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:22:43,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:22:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-28 03:22:43,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:22:43,174 INFO L175 Difference]: Start difference. First operand has 338 places, 498 transitions, 7097 flow. Second operand 12 states and 200 transitions. [2024-06-28 03:22:43,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 539 transitions, 8409 flow [2024-06-28 03:22:46,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 539 transitions, 7880 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-28 03:22:46,587 INFO L231 Difference]: Finished difference. Result has 341 places, 500 transitions, 6879 flow [2024-06-28 03:22:46,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6568, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6879, PETRI_PLACES=341, PETRI_TRANSITIONS=500} [2024-06-28 03:22:46,587 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 296 predicate places. [2024-06-28 03:22:46,587 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 500 transitions, 6879 flow [2024-06-28 03:22:46,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:22:46,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:46,588 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 03:22:46,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:22:46,588 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 03:22:46,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash 331418052, now seen corresponding path program 4 times [2024-06-28 03:22:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:46,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94251237] [2024-06-28 03:22:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:46,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:48,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:48,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94251237] [2024-06-28 03:22:48,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94251237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:48,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:48,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545366749] [2024-06-28 03:22:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:48,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:48,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:48,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:48,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:22:48,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 500 transitions, 6879 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:22:48,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:48,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:22:48,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:50,429 INFO L124 PetriNetUnfolderBase]: 5322/8063 cut-off events. [2024-06-28 03:22:50,429 INFO L125 PetriNetUnfolderBase]: For 2385831/2385837 co-relation queries the response was YES. [2024-06-28 03:22:50,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98300 conditions, 8063 events. 5322/8063 cut-off events. For 2385831/2385837 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 44619 event pairs, 833 based on Foata normal form. 8/8052 useless extension candidates. Maximal degree in co-relation 98133. Up to 5818 conditions per place. [2024-06-28 03:22:50,556 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 264 selfloop transitions, 276 changer transitions 0/555 dead transitions. [2024-06-28 03:22:50,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 555 transitions, 9163 flow [2024-06-28 03:22:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 03:22:50,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256198347107438 [2024-06-28 03:22:50,558 INFO L175 Difference]: Start difference. First operand has 341 places, 500 transitions, 6879 flow. Second operand 11 states and 206 transitions. [2024-06-28 03:22:50,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 555 transitions, 9163 flow [2024-06-28 03:22:54,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 555 transitions, 8870 flow, removed 63 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:54,599 INFO L231 Difference]: Finished difference. Result has 342 places, 506 transitions, 7437 flow [2024-06-28 03:22:54,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6586, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7437, PETRI_PLACES=342, PETRI_TRANSITIONS=506} [2024-06-28 03:22:54,600 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 297 predicate places. [2024-06-28 03:22:54,600 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 506 transitions, 7437 flow [2024-06-28 03:22:54,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:22:54,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:54,600 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 03:22:54,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:22:54,600 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 03:22:54,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash 320933852, now seen corresponding path program 1 times [2024-06-28 03:22:54,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:54,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355300822] [2024-06-28 03:22:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:54,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:56,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:56,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355300822] [2024-06-28 03:22:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355300822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:56,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:56,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:22:56,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280865610] [2024-06-28 03:22:56,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:56,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:22:56,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:22:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:22:56,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:22:56,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 506 transitions, 7437 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:22:56,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:56,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:22:56,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:58,299 INFO L124 PetriNetUnfolderBase]: 5334/8081 cut-off events. [2024-06-28 03:22:58,299 INFO L125 PetriNetUnfolderBase]: For 2406187/2406193 co-relation queries the response was YES. [2024-06-28 03:22:58,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99335 conditions, 8081 events. 5334/8081 cut-off events. For 2406187/2406193 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 44842 event pairs, 941 based on Foata normal form. 8/8070 useless extension candidates. Maximal degree in co-relation 99167. Up to 6318 conditions per place. [2024-06-28 03:22:58,423 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 273 selfloop transitions, 261 changer transitions 0/549 dead transitions. [2024-06-28 03:22:58,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 549 transitions, 8669 flow [2024-06-28 03:22:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:58,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-28 03:22:58,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41115702479338845 [2024-06-28 03:22:58,425 INFO L175 Difference]: Start difference. First operand has 342 places, 506 transitions, 7437 flow. Second operand 11 states and 199 transitions. [2024-06-28 03:22:58,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 549 transitions, 8669 flow [2024-06-28 03:23:03,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 549 transitions, 8117 flow, removed 111 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:03,180 INFO L231 Difference]: Finished difference. Result has 346 places, 509 transitions, 7437 flow [2024-06-28 03:23:03,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6885, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7437, PETRI_PLACES=346, PETRI_TRANSITIONS=509} [2024-06-28 03:23:03,181 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 301 predicate places. [2024-06-28 03:23:03,181 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 509 transitions, 7437 flow [2024-06-28 03:23:03,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:23:03,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:03,181 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 03:23:03,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:23:03,181 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 03:23:03,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash 35842662, now seen corresponding path program 5 times [2024-06-28 03:23:03,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:03,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927716420] [2024-06-28 03:23:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:03,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:04,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:04,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927716420] [2024-06-28 03:23:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927716420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:04,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:04,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980188145] [2024-06-28 03:23:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:04,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:04,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:04,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:04,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:23:04,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 509 transitions, 7437 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:23:04,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:04,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:23:04,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:07,065 INFO L124 PetriNetUnfolderBase]: 5426/8233 cut-off events. [2024-06-28 03:23:07,065 INFO L125 PetriNetUnfolderBase]: For 2532438/2532444 co-relation queries the response was YES. [2024-06-28 03:23:07,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100561 conditions, 8233 events. 5426/8233 cut-off events. For 2532438/2532444 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 45958 event pairs, 962 based on Foata normal form. 28/8242 useless extension candidates. Maximal degree in co-relation 100394. Up to 6629 conditions per place. [2024-06-28 03:23:07,205 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 306 selfloop transitions, 235 changer transitions 0/556 dead transitions. [2024-06-28 03:23:07,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 556 transitions, 8801 flow [2024-06-28 03:23:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:23:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:23:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 03:23:07,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194214876033058 [2024-06-28 03:23:07,206 INFO L175 Difference]: Start difference. First operand has 346 places, 509 transitions, 7437 flow. Second operand 11 states and 203 transitions. [2024-06-28 03:23:07,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 556 transitions, 8801 flow [2024-06-28 03:23:11,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 556 transitions, 8280 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:11,428 INFO L231 Difference]: Finished difference. Result has 348 places, 511 transitions, 7503 flow [2024-06-28 03:23:11,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6916, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7503, PETRI_PLACES=348, PETRI_TRANSITIONS=511} [2024-06-28 03:23:11,428 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 303 predicate places. [2024-06-28 03:23:11,428 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 511 transitions, 7503 flow [2024-06-28 03:23:11,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:23:11,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:11,428 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 03:23:11,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:23:11,428 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 03:23:11,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:11,429 INFO L85 PathProgramCache]: Analyzing trace with hash 704740776, now seen corresponding path program 14 times [2024-06-28 03:23:11,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:11,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85023194] [2024-06-28 03:23:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:11,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:13,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:13,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85023194] [2024-06-28 03:23:13,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85023194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:13,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:13,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:13,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155407758] [2024-06-28 03:23:13,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:13,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:13,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:13,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:13,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:13,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:23:13,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 511 transitions, 7503 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:13,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:13,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:23:13,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:15,863 INFO L124 PetriNetUnfolderBase]: 5005/7774 cut-off events. [2024-06-28 03:23:15,863 INFO L125 PetriNetUnfolderBase]: For 2473525/2473541 co-relation queries the response was YES. [2024-06-28 03:23:16,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96034 conditions, 7774 events. 5005/7774 cut-off events. For 2473525/2473541 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 44965 event pairs, 828 based on Foata normal form. 32/7773 useless extension candidates. Maximal degree in co-relation 95866. Up to 5865 conditions per place. [2024-06-28 03:23:16,065 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 267 selfloop transitions, 259 changer transitions 0/551 dead transitions. [2024-06-28 03:23:16,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 551 transitions, 8715 flow [2024-06-28 03:23:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:16,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 03:23:16,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:23:16,067 INFO L175 Difference]: Start difference. First operand has 348 places, 511 transitions, 7503 flow. Second operand 10 states and 195 transitions. [2024-06-28 03:23:16,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 551 transitions, 8715 flow [2024-06-28 03:23:20,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 551 transitions, 8086 flow, removed 82 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:20,087 INFO L231 Difference]: Finished difference. Result has 349 places, 511 transitions, 7405 flow [2024-06-28 03:23:20,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6874, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7405, PETRI_PLACES=349, PETRI_TRANSITIONS=511} [2024-06-28 03:23:20,087 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 304 predicate places. [2024-06-28 03:23:20,088 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 511 transitions, 7405 flow [2024-06-28 03:23:20,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:20,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:20,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:20,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:23:20,088 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 03:23:20,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 704342126, now seen corresponding path program 15 times [2024-06-28 03:23:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:20,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531668858] [2024-06-28 03:23:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:20,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:21,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:21,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531668858] [2024-06-28 03:23:21,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531668858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:21,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:21,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747919617] [2024-06-28 03:23:21,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:21,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:21,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:21,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:23:21,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 511 transitions, 7405 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:21,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:21,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:23:21,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:24,158 INFO L124 PetriNetUnfolderBase]: 5109/7948 cut-off events. [2024-06-28 03:23:24,158 INFO L125 PetriNetUnfolderBase]: For 2509400/2509416 co-relation queries the response was YES. [2024-06-28 03:23:24,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96936 conditions, 7948 events. 5109/7948 cut-off events. For 2509400/2509416 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 46373 event pairs, 897 based on Foata normal form. 32/7947 useless extension candidates. Maximal degree in co-relation 96767. Up to 6054 conditions per place. [2024-06-28 03:23:24,275 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 303 selfloop transitions, 225 changer transitions 0/553 dead transitions. [2024-06-28 03:23:24,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 553 transitions, 8763 flow [2024-06-28 03:23:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 03:23:24,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:23:24,276 INFO L175 Difference]: Start difference. First operand has 349 places, 511 transitions, 7405 flow. Second operand 10 states and 198 transitions. [2024-06-28 03:23:24,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 553 transitions, 8763 flow [2024-06-28 03:23:27,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 553 transitions, 8220 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:27,588 INFO L231 Difference]: Finished difference. Result has 350 places, 513 transitions, 7468 flow [2024-06-28 03:23:27,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7468, PETRI_PLACES=350, PETRI_TRANSITIONS=513} [2024-06-28 03:23:27,589 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 305 predicate places. [2024-06-28 03:23:27,589 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 513 transitions, 7468 flow [2024-06-28 03:23:27,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:27,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:27,589 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 03:23:27,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:23:27,589 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 03:23:27,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash 704588390, now seen corresponding path program 6 times [2024-06-28 03:23:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943987333] [2024-06-28 03:23:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:27,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:29,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:29,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943987333] [2024-06-28 03:23:29,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943987333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:29,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:29,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:29,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695098287] [2024-06-28 03:23:29,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:29,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:29,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:29,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:29,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:29,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:23:29,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 513 transitions, 7468 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:23:29,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:29,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:23:29,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:31,879 INFO L124 PetriNetUnfolderBase]: 5550/8445 cut-off events. [2024-06-28 03:23:31,879 INFO L125 PetriNetUnfolderBase]: For 2529217/2529223 co-relation queries the response was YES. [2024-06-28 03:23:31,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99153 conditions, 8445 events. 5550/8445 cut-off events. For 2529217/2529223 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 47691 event pairs, 1028 based on Foata normal form. 28/8454 useless extension candidates. Maximal degree in co-relation 98983. Up to 6821 conditions per place. [2024-06-28 03:23:32,011 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 340 selfloop transitions, 204 changer transitions 0/559 dead transitions. [2024-06-28 03:23:32,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 559 transitions, 8820 flow [2024-06-28 03:23:32,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:23:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:23:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 03:23:32,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42355371900826444 [2024-06-28 03:23:32,012 INFO L175 Difference]: Start difference. First operand has 350 places, 513 transitions, 7468 flow. Second operand 11 states and 205 transitions. [2024-06-28 03:23:32,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 559 transitions, 8820 flow [2024-06-28 03:23:36,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 559 transitions, 8258 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-28 03:23:36,056 INFO L231 Difference]: Finished difference. Result has 353 places, 514 transitions, 7411 flow [2024-06-28 03:23:36,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6906, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7411, PETRI_PLACES=353, PETRI_TRANSITIONS=514} [2024-06-28 03:23:36,057 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 308 predicate places. [2024-06-28 03:23:36,057 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 514 transitions, 7411 flow [2024-06-28 03:23:36,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 03:23:36,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:36,057 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 03:23:36,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:23:36,057 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 03:23:36,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash 697913036, now seen corresponding path program 16 times [2024-06-28 03:23:36,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:36,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352851303] [2024-06-28 03:23:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:36,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352851303] [2024-06-28 03:23:37,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352851303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:37,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321514145] [2024-06-28 03:23:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:37,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:23:37,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 514 transitions, 7411 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:37,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:37,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:23:37,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:40,218 INFO L124 PetriNetUnfolderBase]: 5197/8103 cut-off events. [2024-06-28 03:23:40,218 INFO L125 PetriNetUnfolderBase]: For 2457718/2457729 co-relation queries the response was YES. [2024-06-28 03:23:40,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97075 conditions, 8103 events. 5197/8103 cut-off events. For 2457718/2457729 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 47665 event pairs, 908 based on Foata normal form. 12/8089 useless extension candidates. Maximal degree in co-relation 96904. Up to 6306 conditions per place. [2024-06-28 03:23:40,362 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 302 selfloop transitions, 225 changer transitions 0/552 dead transitions. [2024-06-28 03:23:40,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 552 transitions, 8737 flow [2024-06-28 03:23:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:40,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:40,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 03:23:40,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:23:40,363 INFO L175 Difference]: Start difference. First operand has 353 places, 514 transitions, 7411 flow. Second operand 10 states and 195 transitions. [2024-06-28 03:23:40,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 552 transitions, 8737 flow [2024-06-28 03:23:44,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 552 transitions, 8252 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:44,985 INFO L231 Difference]: Finished difference. Result has 354 places, 516 transitions, 7534 flow [2024-06-28 03:23:44,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6926, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7534, PETRI_PLACES=354, PETRI_TRANSITIONS=516} [2024-06-28 03:23:44,986 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 309 predicate places. [2024-06-28 03:23:44,986 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 516 transitions, 7534 flow [2024-06-28 03:23:44,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:44,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:44,986 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 03:23:44,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:23:44,986 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 03:23:44,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:44,987 INFO L85 PathProgramCache]: Analyzing trace with hash 697908386, now seen corresponding path program 17 times [2024-06-28 03:23:44,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:44,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945132045] [2024-06-28 03:23:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:44,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:46,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:46,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945132045] [2024-06-28 03:23:46,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945132045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:46,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:46,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137194510] [2024-06-28 03:23:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:46,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:46,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:46,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:46,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:23:46,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 516 transitions, 7534 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:46,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:46,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:23:46,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:48,946 INFO L124 PetriNetUnfolderBase]: 5230/8160 cut-off events. [2024-06-28 03:23:48,946 INFO L125 PetriNetUnfolderBase]: For 2495657/2495668 co-relation queries the response was YES. [2024-06-28 03:23:49,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98139 conditions, 8160 events. 5230/8160 cut-off events. For 2495657/2495668 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 48130 event pairs, 910 based on Foata normal form. 8/8142 useless extension candidates. Maximal degree in co-relation 97967. Up to 6161 conditions per place. [2024-06-28 03:23:49,073 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 303 selfloop transitions, 230 changer transitions 0/558 dead transitions. [2024-06-28 03:23:49,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 558 transitions, 8908 flow [2024-06-28 03:23:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 03:23:49,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-28 03:23:49,074 INFO L175 Difference]: Start difference. First operand has 354 places, 516 transitions, 7534 flow. Second operand 10 states and 199 transitions. [2024-06-28 03:23:49,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 558 transitions, 8908 flow [2024-06-28 03:23:53,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 558 transitions, 8320 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-06-28 03:23:53,888 INFO L231 Difference]: Finished difference. Result has 356 places, 518 transitions, 7567 flow [2024-06-28 03:23:53,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6946, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7567, PETRI_PLACES=356, PETRI_TRANSITIONS=518} [2024-06-28 03:23:53,888 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 311 predicate places. [2024-06-28 03:23:53,888 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 518 transitions, 7567 flow [2024-06-28 03:23:53,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:53,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:53,888 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 03:23:53,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:23:53,888 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 03:23:53,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:53,889 INFO L85 PathProgramCache]: Analyzing trace with hash 527210606, now seen corresponding path program 18 times [2024-06-28 03:23:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:53,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055313803] [2024-06-28 03:23:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:53,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:55,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055313803] [2024-06-28 03:23:55,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055313803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:55,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:55,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:23:55,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227214368] [2024-06-28 03:23:55,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:55,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:23:55,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:23:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:23:55,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:23:55,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 518 transitions, 7567 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:23:55,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:55,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:23:55,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:57,655 INFO L124 PetriNetUnfolderBase]: 5243/8189 cut-off events. [2024-06-28 03:23:57,655 INFO L125 PetriNetUnfolderBase]: For 2537749/2537760 co-relation queries the response was YES. [2024-06-28 03:23:57,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98237 conditions, 8189 events. 5243/8189 cut-off events. For 2537749/2537760 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 48435 event pairs, 903 based on Foata normal form. 12/8175 useless extension candidates. Maximal degree in co-relation 98064. Up to 6377 conditions per place. [2024-06-28 03:23:58,027 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 292 selfloop transitions, 239 changer transitions 0/556 dead transitions. [2024-06-28 03:23:58,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 556 transitions, 8909 flow [2024-06-28 03:23:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:58,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:23:58,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-28 03:23:58,028 INFO L175 Difference]: Start difference. First operand has 356 places, 518 transitions, 7567 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:23:58,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 556 transitions, 8909 flow [2024-06-28 03:24:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 556 transitions, 8306 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-28 03:24:02,247 INFO L231 Difference]: Finished difference. Result has 358 places, 520 transitions, 7608 flow [2024-06-28 03:24:02,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6964, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7608, PETRI_PLACES=358, PETRI_TRANSITIONS=520} [2024-06-28 03:24:02,248 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 313 predicate places. [2024-06-28 03:24:02,248 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 520 transitions, 7608 flow [2024-06-28 03:24:02,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:24:02,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:02,248 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 03:24:02,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:24:02,249 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 03:24:02,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:02,249 INFO L85 PathProgramCache]: Analyzing trace with hash 527205956, now seen corresponding path program 19 times [2024-06-28 03:24:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:02,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877164790] [2024-06-28 03:24:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:02,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:03,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:03,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877164790] [2024-06-28 03:24:03,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877164790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:03,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:03,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:03,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248488989] [2024-06-28 03:24:03,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:03,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:03,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:03,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:03,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:24:03,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 520 transitions, 7608 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:24:03,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:03,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:24:03,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:06,371 INFO L124 PetriNetUnfolderBase]: 5244/8200 cut-off events. [2024-06-28 03:24:06,372 INFO L125 PetriNetUnfolderBase]: For 2563580/2563601 co-relation queries the response was YES. [2024-06-28 03:24:06,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98946 conditions, 8200 events. 5244/8200 cut-off events. For 2563580/2563601 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 48735 event pairs, 903 based on Foata normal form. 8/8168 useless extension candidates. Maximal degree in co-relation 98772. Up to 6363 conditions per place. [2024-06-28 03:24:06,510 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 291 selfloop transitions, 242 changer transitions 0/558 dead transitions. [2024-06-28 03:24:06,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 558 transitions, 8956 flow [2024-06-28 03:24:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:24:06,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-28 03:24:06,511 INFO L175 Difference]: Start difference. First operand has 358 places, 520 transitions, 7608 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:24:06,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 558 transitions, 8956 flow [2024-06-28 03:24:11,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 558 transitions, 8332 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-28 03:24:11,525 INFO L231 Difference]: Finished difference. Result has 360 places, 522 transitions, 7637 flow [2024-06-28 03:24:11,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6984, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7637, PETRI_PLACES=360, PETRI_TRANSITIONS=522} [2024-06-28 03:24:11,526 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 315 predicate places. [2024-06-28 03:24:11,526 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 522 transitions, 7637 flow [2024-06-28 03:24:11,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:24:11,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:11,526 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 03:24:11,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:24:11,526 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 03:24:11,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 527090636, now seen corresponding path program 20 times [2024-06-28 03:24:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119019938] [2024-06-28 03:24:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:12,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:12,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119019938] [2024-06-28 03:24:12,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119019938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:12,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:12,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:24:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31032680] [2024-06-28 03:24:12,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:12,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:24:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:24:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:24:13,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:24:13,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 522 transitions, 7637 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:24:13,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:13,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:24:13,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:15,522 INFO L124 PetriNetUnfolderBase]: 5228/8175 cut-off events. [2024-06-28 03:24:15,523 INFO L125 PetriNetUnfolderBase]: For 2575802/2575828 co-relation queries the response was YES. [2024-06-28 03:24:15,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98231 conditions, 8175 events. 5228/8175 cut-off events. For 2575802/2575828 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 48539 event pairs, 946 based on Foata normal form. 8/8136 useless extension candidates. Maximal degree in co-relation 98056. Up to 6349 conditions per place. [2024-06-28 03:24:15,643 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 311 selfloop transitions, 226 changer transitions 0/562 dead transitions. [2024-06-28 03:24:15,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 562 transitions, 9059 flow [2024-06-28 03:24:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:15,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 03:24:15,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-28 03:24:15,644 INFO L175 Difference]: Start difference. First operand has 360 places, 522 transitions, 7637 flow. Second operand 10 states and 188 transitions. [2024-06-28 03:24:15,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 562 transitions, 9059 flow [2024-06-28 03:24:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 562 transitions, 8424 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-28 03:24:20,599 INFO L231 Difference]: Finished difference. Result has 363 places, 527 transitions, 7741 flow [2024-06-28 03:24:20,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7002, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7741, PETRI_PLACES=363, PETRI_TRANSITIONS=527} [2024-06-28 03:24:20,599 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 318 predicate places. [2024-06-28 03:24:20,599 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 527 transitions, 7741 flow [2024-06-28 03:24:20,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 03:24:20,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:20,600 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 03:24:20,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:24:20,600 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:20,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2109182600, now seen corresponding path program 4 times [2024-06-28 03:24:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:20,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336699556] [2024-06-28 03:24:20,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:20,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:21,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:21,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336699556] [2024-06-28 03:24:21,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336699556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:21,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:21,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:21,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028216823] [2024-06-28 03:24:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:21,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:21,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:21,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:21,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:24:21,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 527 transitions, 7741 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:21,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:21,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:24:21,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:24,052 INFO L124 PetriNetUnfolderBase]: 5548/8480 cut-off events. [2024-06-28 03:24:24,052 INFO L125 PetriNetUnfolderBase]: For 2611769/2611790 co-relation queries the response was YES. [2024-06-28 03:24:24,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99390 conditions, 8480 events. 5548/8480 cut-off events. For 2611769/2611790 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 48702 event pairs, 1116 based on Foata normal form. 6/8404 useless extension candidates. Maximal degree in co-relation 99213. Up to 7971 conditions per place. [2024-06-28 03:24:24,183 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 430 selfloop transitions, 81 changer transitions 0/549 dead transitions. [2024-06-28 03:24:24,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 549 transitions, 9381 flow [2024-06-28 03:24:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:24:24,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-28 03:24:24,184 INFO L175 Difference]: Start difference. First operand has 363 places, 527 transitions, 7741 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:24:24,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 549 transitions, 9381 flow [2024-06-28 03:24:28,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 549 transitions, 8805 flow, removed 109 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:28,417 INFO L231 Difference]: Finished difference. Result has 365 places, 533 transitions, 7435 flow [2024-06-28 03:24:28,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7165, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7435, PETRI_PLACES=365, PETRI_TRANSITIONS=533} [2024-06-28 03:24:28,417 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 320 predicate places. [2024-06-28 03:24:28,418 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 533 transitions, 7435 flow [2024-06-28 03:24:28,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:28,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:28,418 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 03:24:28,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:24:28,418 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:28,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash 922260433, now seen corresponding path program 2 times [2024-06-28 03:24:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:28,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032435857] [2024-06-28 03:24:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:28,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:29,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032435857] [2024-06-28 03:24:29,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032435857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:29,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:29,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:29,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382246834] [2024-06-28 03:24:29,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:29,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:29,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:29,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:29,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:24:29,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 533 transitions, 7435 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:29,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:29,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:24:29,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:31,863 INFO L124 PetriNetUnfolderBase]: 5551/8483 cut-off events. [2024-06-28 03:24:31,863 INFO L125 PetriNetUnfolderBase]: For 2627910/2627937 co-relation queries the response was YES. [2024-06-28 03:24:31,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98214 conditions, 8483 events. 5551/8483 cut-off events. For 2627910/2627937 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 48719 event pairs, 1140 based on Foata normal form. 9/8422 useless extension candidates. Maximal degree in co-relation 98036. Up to 8143 conditions per place. [2024-06-28 03:24:31,989 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 467 selfloop transitions, 42 changer transitions 0/547 dead transitions. [2024-06-28 03:24:31,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 547 transitions, 8775 flow [2024-06-28 03:24:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 03:24:31,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:24:31,990 INFO L175 Difference]: Start difference. First operand has 365 places, 533 transitions, 7435 flow. Second operand 8 states and 128 transitions. [2024-06-28 03:24:31,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 547 transitions, 8775 flow [2024-06-28 03:24:36,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 547 transitions, 8528 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:36,470 INFO L231 Difference]: Finished difference. Result has 368 places, 536 transitions, 7334 flow [2024-06-28 03:24:36,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7188, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7334, PETRI_PLACES=368, PETRI_TRANSITIONS=536} [2024-06-28 03:24:36,470 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 323 predicate places. [2024-06-28 03:24:36,471 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 536 transitions, 7334 flow [2024-06-28 03:24:36,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:36,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:36,471 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 03:24:36,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:24:36,471 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:36,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1678841177, now seen corresponding path program 3 times [2024-06-28 03:24:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:36,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990799616] [2024-06-28 03:24:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:37,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990799616] [2024-06-28 03:24:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990799616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:37,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:37,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316213842] [2024-06-28 03:24:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:37,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:24:37,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 536 transitions, 7334 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:37,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:37,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:24:37,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:39,983 INFO L124 PetriNetUnfolderBase]: 5556/8490 cut-off events. [2024-06-28 03:24:39,983 INFO L125 PetriNetUnfolderBase]: For 2666658/2666685 co-relation queries the response was YES. [2024-06-28 03:24:40,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98408 conditions, 8490 events. 5556/8490 cut-off events. For 2666658/2666685 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 48822 event pairs, 1140 based on Foata normal form. 9/8429 useless extension candidates. Maximal degree in co-relation 98229. Up to 8149 conditions per place. [2024-06-28 03:24:40,118 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 466 selfloop transitions, 46 changer transitions 0/550 dead transitions. [2024-06-28 03:24:40,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 550 transitions, 8688 flow [2024-06-28 03:24:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:40,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 03:24:40,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-28 03:24:40,119 INFO L175 Difference]: Start difference. First operand has 368 places, 536 transitions, 7334 flow. Second operand 8 states and 127 transitions. [2024-06-28 03:24:40,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 550 transitions, 8688 flow [2024-06-28 03:24:44,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 550 transitions, 8552 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:44,458 INFO L231 Difference]: Finished difference. Result has 371 places, 539 transitions, 7358 flow [2024-06-28 03:24:44,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7208, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7358, PETRI_PLACES=371, PETRI_TRANSITIONS=539} [2024-06-28 03:24:44,458 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 326 predicate places. [2024-06-28 03:24:44,458 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 539 transitions, 7358 flow [2024-06-28 03:24:44,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:44,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:44,458 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 03:24:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:24:44,459 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:44,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2109169580, now seen corresponding path program 5 times [2024-06-28 03:24:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:44,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597503341] [2024-06-28 03:24:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:45,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:45,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597503341] [2024-06-28 03:24:45,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597503341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:45,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:45,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653241771] [2024-06-28 03:24:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:45,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:45,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:45,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:24:45,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 539 transitions, 7358 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:45,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:45,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:24:45,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:48,019 INFO L124 PetriNetUnfolderBase]: 5552/8486 cut-off events. [2024-06-28 03:24:48,019 INFO L125 PetriNetUnfolderBase]: For 2700236/2700257 co-relation queries the response was YES. [2024-06-28 03:24:48,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98455 conditions, 8486 events. 5552/8486 cut-off events. For 2700236/2700257 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 48738 event pairs, 1111 based on Foata normal form. 6/8410 useless extension candidates. Maximal degree in co-relation 98275. Up to 7980 conditions per place. [2024-06-28 03:24:48,153 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 433 selfloop transitions, 82 changer transitions 0/553 dead transitions. [2024-06-28 03:24:48,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 553 transitions, 8670 flow [2024-06-28 03:24:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 03:24:48,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-28 03:24:48,154 INFO L175 Difference]: Start difference. First operand has 371 places, 539 transitions, 7358 flow. Second operand 8 states and 133 transitions. [2024-06-28 03:24:48,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 553 transitions, 8670 flow [2024-06-28 03:24:52,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 553 transitions, 8520 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 03:24:52,881 INFO L231 Difference]: Finished difference. Result has 374 places, 539 transitions, 7378 flow [2024-06-28 03:24:52,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7208, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7378, PETRI_PLACES=374, PETRI_TRANSITIONS=539} [2024-06-28 03:24:52,881 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 329 predicate places. [2024-06-28 03:24:52,882 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 539 transitions, 7378 flow [2024-06-28 03:24:52,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:52,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:52,882 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 03:24:52,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:24:52,882 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:52,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1678840712, now seen corresponding path program 6 times [2024-06-28 03:24:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259285984] [2024-06-28 03:24:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259285984] [2024-06-28 03:24:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259285984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:53,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:53,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:24:53,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528658897] [2024-06-28 03:24:53,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:53,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:24:53,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:53,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:24:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:24:53,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-06-28 03:24:53,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 539 transitions, 7378 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 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 03:24:53,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:53,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-06-28 03:24:53,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:56,425 INFO L124 PetriNetUnfolderBase]: 5546/8478 cut-off events. [2024-06-28 03:24:56,425 INFO L125 PetriNetUnfolderBase]: For 2727193/2727214 co-relation queries the response was YES. [2024-06-28 03:24:56,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98564 conditions, 8478 events. 5546/8478 cut-off events. For 2727193/2727214 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 48669 event pairs, 1108 based on Foata normal form. 6/8402 useless extension candidates. Maximal degree in co-relation 98383. Up to 7975 conditions per place. [2024-06-28 03:24:56,566 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 430 selfloop transitions, 84 changer transitions 0/552 dead transitions. [2024-06-28 03:24:56,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 552 transitions, 8446 flow [2024-06-28 03:24:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:24:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:24:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:24:56,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-28 03:24:56,567 INFO L175 Difference]: Start difference. First operand has 374 places, 539 transitions, 7378 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:24:56,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 552 transitions, 8446 flow