./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:03:50,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:03:50,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:03:50,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:03:50,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:03:50,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:03:50,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:03:50,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:03:50,282 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:03:50,285 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:03:50,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:03:50,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:03:50,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:03:50,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:03:50,288 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:03:50,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:03:50,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:03:50,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:03:50,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:03:50,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:03:50,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:03:50,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:03:50,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:03:50,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:03:50,290 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:03:50,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:03:50,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:03:50,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:03:50,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:03:50,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:03:50,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:03:50,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:03:50,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:03:50,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:03:50,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:03:50,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:03:50,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:03:50,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:03:50,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:03:50,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:03:50,294 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:03:50,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:03:50,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:03:50,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:03:50,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:03:50,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:03:50,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:03:50,512 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:03:50,513 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:03:50,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i [2024-06-28 03:03:51,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:03:51,707 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:03:51,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i [2024-06-28 03:03:51,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d2fdbe8/0e2b15cf7f764baabd0f2216c50ae8e9/FLAG8f2fd6b36 [2024-06-28 03:03:51,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d2fdbe8/0e2b15cf7f764baabd0f2216c50ae8e9 [2024-06-28 03:03:51,738 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:03:51,738 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:03:51,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016_pso.opt_tso.opt.yml/witness.yml [2024-06-28 03:03:51,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:03:51,903 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:03:51,904 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:03:51,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:03:51,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:03:51,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:03:51" (1/2) ... [2024-06-28 03:03:51,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a487f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:03:51, skipping insertion in model container [2024-06-28 03:03:51,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:03:51" (1/2) ... [2024-06-28 03:03:51,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40ebd9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:03:51, skipping insertion in model container [2024-06-28 03:03:51,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:03:51" (2/2) ... [2024-06-28 03:03:51,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a487f0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:51, skipping insertion in model container [2024-06-28 03:03:51,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:03:51" (2/2) ... [2024-06-28 03:03:51,912 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:03:51,981 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:03:51,982 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] (((((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:03:51,983 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:03:51,983 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:03:51,983 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:03:51,983 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-28 03:03:52,019 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:03:52,317 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:03:52,328 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:03:52,521 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:03:52,560 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:03:52,561 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:03:52 WrapperNode [2024-06-28 03:03:52,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:03:52,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:03:52,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:03:52,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:03:52,568 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,599 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,626 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 149 [2024-06-28 03:03:52,627 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:03:52,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:03:52,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:03:52,628 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:03:52,636 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,637 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,645 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,668 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 03:03:52,674 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,674 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,687 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,697 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,699 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,705 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:03:52,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:03:52,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:03:52,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:03:52,711 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 03:03:52" (1/1) ... [2024-06-28 03:03:52,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:03:52,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:03:52,735 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 03:03:52,774 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 03:03:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:03:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:03:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:03:52,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:03:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:03:52,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:03:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:03:52,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:03:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:03:52,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:03:52,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:03:52,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:03:52,791 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 03:03:52,919 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:03:52,921 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:03:53,221 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:03:53,221 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:03:53,372 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:03:53,372 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:03:53,373 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:03:53 BoogieIcfgContainer [2024-06-28 03:03:53,373 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:03:53,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:03:53,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:03:53,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:03:53,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:03:51" (1/4) ... [2024-06-28 03:03:53,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417e29c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:03:53, skipping insertion in model container [2024-06-28 03:03:53,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:03:51" (2/4) ... [2024-06-28 03:03:53,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417e29c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:03:53, skipping insertion in model container [2024-06-28 03:03:53,379 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 03:03:52" (3/4) ... [2024-06-28 03:03:53,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417e29c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:03:53, skipping insertion in model container [2024-06-28 03:03:53,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:03:53" (4/4) ... [2024-06-28 03:03:53,380 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016_pso.opt_tso.opt.i [2024-06-28 03:03:53,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:03:53,393 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:03:53,393 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:03:53,434 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:03:53,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:03:53,487 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 03:03:53,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:03:53,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:03:53,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:03:53,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 03:03:53,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:03:53,509 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;@34ea2066, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:03:53,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:03:53,514 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:03:53,514 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:03:53,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:03:53,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:53,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:03:53,515 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 03:03:53,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:53,519 INFO L85 PathProgramCache]: Analyzing trace with hash 397045706, now seen corresponding path program 1 times [2024-06-28 03:03:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:53,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027221789] [2024-06-28 03:03:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:54,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027221789] [2024-06-28 03:03:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027221789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:54,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:54,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:03:54,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727540049] [2024-06-28 03:03:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:54,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:03:54,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:54,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:03:54,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:03:54,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-28 03:03:54,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:54,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:54,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-28 03:03:54,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:54,689 INFO L124 PetriNetUnfolderBase]: 869/1398 cut-off events. [2024-06-28 03:03:54,690 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 03:03:54,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2776 conditions, 1398 events. 869/1398 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7015 event pairs, 566 based on Foata normal form. 1/1345 useless extension candidates. Maximal degree in co-relation 2764. Up to 1315 conditions per place. [2024-06-28 03:03:54,702 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 30 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-28 03:03:54,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 167 flow [2024-06-28 03:03:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:03:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:03:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 03:03:54,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2024-06-28 03:03:54,712 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 79 transitions. [2024-06-28 03:03:54,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 167 flow [2024-06-28 03:03:54,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:54,717 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 03:03:54,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 03:03:54,722 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 03:03:54,722 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 03:03:54,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:54,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:54,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:54,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:03:54,723 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 03:03:54,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:54,724 INFO L85 PathProgramCache]: Analyzing trace with hash -691136087, now seen corresponding path program 1 times [2024-06-28 03:03:54,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:54,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519995953] [2024-06-28 03:03:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:54,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:55,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519995953] [2024-06-28 03:03:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519995953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:55,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:55,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:03:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68126573] [2024-06-28 03:03:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:03:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:03:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:03:55,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 03:03:55,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:55,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:55,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 03:03:55,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:55,579 INFO L124 PetriNetUnfolderBase]: 996/1549 cut-off events. [2024-06-28 03:03:55,579 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-06-28 03:03:55,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 1549 events. 996/1549 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7582 event pairs, 519 based on Foata normal form. 3/1549 useless extension candidates. Maximal degree in co-relation 3552. Up to 1484 conditions per place. [2024-06-28 03:03:55,586 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 38 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-06-28 03:03:55,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 236 flow [2024-06-28 03:03:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:03:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:03:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-28 03:03:55,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-06-28 03:03:55,588 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 100 transitions. [2024-06-28 03:03:55,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 236 flow [2024-06-28 03:03:55,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:03:55,589 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-28 03:03:55,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:03:55,590 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 03:03:55,590 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-28 03:03:55,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:55,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:55,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:55,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:03:55,591 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 03:03:55,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash 439035286, now seen corresponding path program 1 times [2024-06-28 03:03:55,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:55,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440214275] [2024-06-28 03:03:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:55,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:56,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440214275] [2024-06-28 03:03:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440214275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:56,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:56,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:03:56,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243846430] [2024-06-28 03:03:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:56,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:03:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:03:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:03:56,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:03:56,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:56,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:56,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:03:56,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:56,784 INFO L124 PetriNetUnfolderBase]: 1265/1933 cut-off events. [2024-06-28 03:03:56,784 INFO L125 PetriNetUnfolderBase]: For 1101/1101 co-relation queries the response was YES. [2024-06-28 03:03:56,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4930 conditions, 1933 events. 1265/1933 cut-off events. For 1101/1101 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9175 event pairs, 445 based on Foata normal form. 6/1933 useless extension candidates. Maximal degree in co-relation 4916. Up to 1828 conditions per place. [2024-06-28 03:03:56,793 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 50 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-28 03:03:56,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 348 flow [2024-06-28 03:03:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 03:03:56,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556910569105691 [2024-06-28 03:03:56,795 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 6 states and 137 transitions. [2024-06-28 03:03:56,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 348 flow [2024-06-28 03:03:56,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 328 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 03:03:56,797 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 179 flow [2024-06-28 03:03:56,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-28 03:03:56,798 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-28 03:03:56,798 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 179 flow [2024-06-28 03:03:56,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:56,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:56,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:56,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:03:56,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:56,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash -30884977, now seen corresponding path program 1 times [2024-06-28 03:03:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:56,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498303508] [2024-06-28 03:03:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:56,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:57,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:57,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498303508] [2024-06-28 03:03:57,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498303508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:57,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:57,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:03:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082608055] [2024-06-28 03:03:57,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:57,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:03:57,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:57,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:03:57,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:03:57,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:03:57,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 179 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 03:03:57,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:57,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:03:57,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:57,871 INFO L124 PetriNetUnfolderBase]: 1085/1742 cut-off events. [2024-06-28 03:03:57,872 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2024-06-28 03:03:57,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4799 conditions, 1742 events. 1085/1742 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8600 event pairs, 442 based on Foata normal form. 4/1738 useless extension candidates. Maximal degree in co-relation 4782. Up to 1611 conditions per place. [2024-06-28 03:03:57,880 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 43 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-28 03:03:57,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 325 flow [2024-06-28 03:03:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:03:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:03:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-28 03:03:57,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 03:03:57,882 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 179 flow. Second operand 5 states and 100 transitions. [2024-06-28 03:03:57,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 325 flow [2024-06-28 03:03:57,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 298 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:57,884 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 196 flow [2024-06-28 03:03:57,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 03:03:57,885 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-28 03:03:57,885 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 196 flow [2024-06-28 03:03:57,886 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 03:03:57,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:57,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:57,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:03:57,886 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 03:03:57,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash -104308520, now seen corresponding path program 1 times [2024-06-28 03:03:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27574918] [2024-06-28 03:03:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:57,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:58,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:58,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27574918] [2024-06-28 03:03:58,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27574918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:58,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:58,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:58,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868998658] [2024-06-28 03:03:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:58,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:58,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:58,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:58,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:58,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 196 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 03:03:58,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:58,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:58,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:59,053 INFO L124 PetriNetUnfolderBase]: 1277/1951 cut-off events. [2024-06-28 03:03:59,053 INFO L125 PetriNetUnfolderBase]: For 3080/3080 co-relation queries the response was YES. [2024-06-28 03:03:59,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5931 conditions, 1951 events. 1277/1951 cut-off events. For 3080/3080 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9180 event pairs, 487 based on Foata normal form. 4/1953 useless extension candidates. Maximal degree in co-relation 5912. Up to 1826 conditions per place. [2024-06-28 03:03:59,064 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 53 selfloop transitions, 16 changer transitions 0/74 dead transitions. [2024-06-28 03:03:59,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 442 flow [2024-06-28 03:03:59,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 03:03:59,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-06-28 03:03:59,067 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 196 flow. Second operand 6 states and 122 transitions. [2024-06-28 03:03:59,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 442 flow [2024-06-28 03:03:59,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 422 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:59,074 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 258 flow [2024-06-28 03:03:59,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-06-28 03:03:59,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-06-28 03:03:59,077 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 258 flow [2024-06-28 03:03:59,077 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 03:03:59,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:59,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:59,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:03:59,081 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 03:03:59,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:59,081 INFO L85 PathProgramCache]: Analyzing trace with hash -76453160, now seen corresponding path program 2 times [2024-06-28 03:03:59,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:59,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862356140] [2024-06-28 03:03:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:59,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862356140] [2024-06-28 03:03:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862356140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:59,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:59,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:59,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417378964] [2024-06-28 03:03:59,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:59,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:59,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:03:59,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 258 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 03:03:59,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:59,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:03:59,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:00,165 INFO L124 PetriNetUnfolderBase]: 1267/1939 cut-off events. [2024-06-28 03:04:00,166 INFO L125 PetriNetUnfolderBase]: For 4431/4435 co-relation queries the response was YES. [2024-06-28 03:04:00,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6371 conditions, 1939 events. 1267/1939 cut-off events. For 4431/4435 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9214 event pairs, 486 based on Foata normal form. 8/1946 useless extension candidates. Maximal degree in co-relation 6351. Up to 1818 conditions per place. [2024-06-28 03:04:00,175 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 47 selfloop transitions, 16 changer transitions 0/68 dead transitions. [2024-06-28 03:04:00,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 426 flow [2024-06-28 03:04:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:04:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:04:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:04:00,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 03:04:00,176 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 258 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:04:00,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 426 flow [2024-06-28 03:04:00,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 396 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 03:04:00,180 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 268 flow [2024-06-28 03:04:00,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-28 03:04:00,181 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-28 03:04:00,181 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 268 flow [2024-06-28 03:04:00,181 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 03:04:00,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:00,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:00,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:04:00,182 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 03:04:00,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:00,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1230031002, now seen corresponding path program 1 times [2024-06-28 03:04:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:00,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619961572] [2024-06-28 03:04:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:00,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:00,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619961572] [2024-06-28 03:04:00,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619961572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:00,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:00,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:00,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891463133] [2024-06-28 03:04:00,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:00,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:00,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:00,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:00,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:00,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:00,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 268 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 03:04:00,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:00,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:00,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:01,320 INFO L124 PetriNetUnfolderBase]: 1325/2043 cut-off events. [2024-06-28 03:04:01,321 INFO L125 PetriNetUnfolderBase]: For 5479/5481 co-relation queries the response was YES. [2024-06-28 03:04:01,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 2043 events. 1325/2043 cut-off events. For 5479/5481 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9760 event pairs, 520 based on Foata normal form. 6/2048 useless extension candidates. Maximal degree in co-relation 6815. Up to 1909 conditions per place. [2024-06-28 03:04:01,331 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 63 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2024-06-28 03:04:01,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 596 flow [2024-06-28 03:04:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:04:01,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2024-06-28 03:04:01,332 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 268 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:04:01,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 596 flow [2024-06-28 03:04:01,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 540 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:01,337 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 378 flow [2024-06-28 03:04:01,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2024-06-28 03:04:01,338 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-28 03:04:01,338 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 378 flow [2024-06-28 03:04:01,338 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 03:04:01,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:01,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:01,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:04:01,338 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 03:04:01,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash -980276616, now seen corresponding path program 2 times [2024-06-28 03:04:01,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:01,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058002930] [2024-06-28 03:04:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:01,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:02,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058002930] [2024-06-28 03:04:02,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058002930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:02,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:02,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:02,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799649472] [2024-06-28 03:04:02,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:02,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:02,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:02,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:02,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 378 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 03:04:02,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:02,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:02,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:02,641 INFO L124 PetriNetUnfolderBase]: 1347/2082 cut-off events. [2024-06-28 03:04:02,641 INFO L125 PetriNetUnfolderBase]: For 7356/7360 co-relation queries the response was YES. [2024-06-28 03:04:02,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7503 conditions, 2082 events. 1347/2082 cut-off events. For 7356/7360 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10029 event pairs, 513 based on Foata normal form. 8/2089 useless extension candidates. Maximal degree in co-relation 7479. Up to 1918 conditions per place. [2024-06-28 03:04:02,659 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 63 selfloop transitions, 26 changer transitions 0/94 dead transitions. [2024-06-28 03:04:02,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 668 flow [2024-06-28 03:04:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:04:02,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 03:04:02,664 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 378 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:04:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 668 flow [2024-06-28 03:04:02,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 628 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:02,669 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 437 flow [2024-06-28 03:04:02,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=437, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-28 03:04:02,671 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-28 03:04:02,671 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 437 flow [2024-06-28 03:04:02,671 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 03:04:02,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:02,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:02,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:04:02,672 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 03:04:02,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1147406520, now seen corresponding path program 3 times [2024-06-28 03:04:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643491892] [2024-06-28 03:04:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:03,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:03,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643491892] [2024-06-28 03:04:03,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643491892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:03,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:03,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:03,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413331242] [2024-06-28 03:04:03,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:03,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:03,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:03,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:03,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:03,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 437 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 03:04:03,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:03,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:03,945 INFO L124 PetriNetUnfolderBase]: 1369/2124 cut-off events. [2024-06-28 03:04:03,945 INFO L125 PetriNetUnfolderBase]: For 9881/9883 co-relation queries the response was YES. [2024-06-28 03:04:03,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8165 conditions, 2124 events. 1369/2124 cut-off events. For 9881/9883 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10297 event pairs, 449 based on Foata normal form. 4/2126 useless extension candidates. Maximal degree in co-relation 8140. Up to 1834 conditions per place. [2024-06-28 03:04:03,956 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 59 selfloop transitions, 37 changer transitions 0/101 dead transitions. [2024-06-28 03:04:03,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 101 transitions, 805 flow [2024-06-28 03:04:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 03:04:03,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49477351916376305 [2024-06-28 03:04:03,958 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 437 flow. Second operand 7 states and 142 transitions. [2024-06-28 03:04:03,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 101 transitions, 805 flow [2024-06-28 03:04:03,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 720 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:03,965 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 512 flow [2024-06-28 03:04:03,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=512, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2024-06-28 03:04:03,966 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-28 03:04:03,966 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 512 flow [2024-06-28 03:04:03,966 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 03:04:03,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:03,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:03,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:04:03,967 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 03:04:03,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash -114968346, now seen corresponding path program 4 times [2024-06-28 03:04:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:03,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535145915] [2024-06-28 03:04:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:03,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:04,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:04,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535145915] [2024-06-28 03:04:04,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535145915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:04,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:04,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350798055] [2024-06-28 03:04:04,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:04,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:04,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:04,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:04,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:04,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 512 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 03:04:04,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:04,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:04,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:05,189 INFO L124 PetriNetUnfolderBase]: 1359/2111 cut-off events. [2024-06-28 03:04:05,189 INFO L125 PetriNetUnfolderBase]: For 9995/9999 co-relation queries the response was YES. [2024-06-28 03:04:05,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8095 conditions, 2111 events. 1359/2111 cut-off events. For 9995/9999 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10258 event pairs, 456 based on Foata normal form. 4/2113 useless extension candidates. Maximal degree in co-relation 8069. Up to 1826 conditions per place. [2024-06-28 03:04:05,201 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 54 selfloop transitions, 37 changer transitions 0/96 dead transitions. [2024-06-28 03:04:05,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 758 flow [2024-06-28 03:04:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:05,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:04:05,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 03:04:05,202 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 512 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:04:05,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 758 flow [2024-06-28 03:04:05,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 700 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:05,212 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 536 flow [2024-06-28 03:04:05,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=536, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-28 03:04:05,213 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-28 03:04:05,213 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 536 flow [2024-06-28 03:04:05,213 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 03:04:05,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:05,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:05,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:04:05,213 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 03:04:05,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash -973596612, now seen corresponding path program 1 times [2024-06-28 03:04:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:05,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218691089] [2024-06-28 03:04:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:05,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:06,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:06,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218691089] [2024-06-28 03:04:06,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218691089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:06,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:06,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531442648] [2024-06-28 03:04:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:06,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:06,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:06,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 536 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:06,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:06,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:06,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:06,721 INFO L124 PetriNetUnfolderBase]: 1181/1911 cut-off events. [2024-06-28 03:04:06,721 INFO L125 PetriNetUnfolderBase]: For 9708/9710 co-relation queries the response was YES. [2024-06-28 03:04:06,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7424 conditions, 1911 events. 1181/1911 cut-off events. For 9708/9710 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9579 event pairs, 396 based on Foata normal form. 4/1901 useless extension candidates. Maximal degree in co-relation 7396. Up to 1735 conditions per place. [2024-06-28 03:04:06,732 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 80 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-28 03:04:06,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 99 transitions, 823 flow [2024-06-28 03:04:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:04:06,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 03:04:06,733 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 536 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:04:06,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 99 transitions, 823 flow [2024-06-28 03:04:06,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 99 transitions, 720 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:06,742 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 517 flow [2024-06-28 03:04:06,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=517, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-28 03:04:06,743 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-06-28 03:04:06,743 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 517 flow [2024-06-28 03:04:06,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:06,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:06,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:06,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:04:06,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:06,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1756359192, now seen corresponding path program 1 times [2024-06-28 03:04:06,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:06,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917823344] [2024-06-28 03:04:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:06,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:07,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:07,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917823344] [2024-06-28 03:04:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917823344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:07,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:07,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:04:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589351069] [2024-06-28 03:04:07,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:07,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:04:07,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:07,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:04:07,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:04:07,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:04:07,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 517 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:07,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:07,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:04:07,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:07,762 INFO L124 PetriNetUnfolderBase]: 1070/1783 cut-off events. [2024-06-28 03:04:07,762 INFO L125 PetriNetUnfolderBase]: For 10588/10598 co-relation queries the response was YES. [2024-06-28 03:04:07,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7227 conditions, 1783 events. 1070/1783 cut-off events. For 10588/10598 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9215 event pairs, 401 based on Foata normal form. 9/1782 useless extension candidates. Maximal degree in co-relation 7197. Up to 1605 conditions per place. [2024-06-28 03:04:07,772 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 71 selfloop transitions, 8 changer transitions 0/90 dead transitions. [2024-06-28 03:04:07,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 717 flow [2024-06-28 03:04:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:04:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:04:07,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-28 03:04:07,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48292682926829267 [2024-06-28 03:04:07,773 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 517 flow. Second operand 5 states and 99 transitions. [2024-06-28 03:04:07,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 717 flow [2024-06-28 03:04:07,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 678 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:07,782 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 524 flow [2024-06-28 03:04:07,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-06-28 03:04:07,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-06-28 03:04:07,783 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 524 flow [2024-06-28 03:04:07,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:07,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:07,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:07,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:04:07,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:07,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1387441020, now seen corresponding path program 1 times [2024-06-28 03:04:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:07,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372164635] [2024-06-28 03:04:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:07,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:08,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:08,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372164635] [2024-06-28 03:04:08,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372164635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:08,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:08,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:04:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751648162] [2024-06-28 03:04:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:08,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:04:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:04:08,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:04:08,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:04:08,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:08,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:08,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:04:08,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:08,928 INFO L124 PetriNetUnfolderBase]: 1067/1774 cut-off events. [2024-06-28 03:04:08,928 INFO L125 PetriNetUnfolderBase]: For 11988/11998 co-relation queries the response was YES. [2024-06-28 03:04:08,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 1774 events. 1067/1774 cut-off events. For 11988/11998 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9126 event pairs, 400 based on Foata normal form. 9/1766 useless extension candidates. Maximal degree in co-relation 7438. Up to 1598 conditions per place. [2024-06-28 03:04:08,939 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 72 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-06-28 03:04:08,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 738 flow [2024-06-28 03:04:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:04:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:04:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 03:04:08,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46747967479674796 [2024-06-28 03:04:08,941 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 524 flow. Second operand 6 states and 115 transitions. [2024-06-28 03:04:08,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 738 flow [2024-06-28 03:04:08,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 714 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:08,951 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 556 flow [2024-06-28 03:04:08,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=556, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-06-28 03:04:08,952 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-28 03:04:08,952 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 556 flow [2024-06-28 03:04:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:08,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:08,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:08,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:04:08,953 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 03:04:08,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1030818789, now seen corresponding path program 1 times [2024-06-28 03:04:08,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:08,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854977054] [2024-06-28 03:04:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:08,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:09,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854977054] [2024-06-28 03:04:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854977054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:09,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:09,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:09,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259790576] [2024-06-28 03:04:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:09,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:09,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:09,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 556 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 03:04:09,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:09,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:09,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:10,428 INFO L124 PetriNetUnfolderBase]: 1511/2374 cut-off events. [2024-06-28 03:04:10,428 INFO L125 PetriNetUnfolderBase]: For 19925/19929 co-relation queries the response was YES. [2024-06-28 03:04:10,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10616 conditions, 2374 events. 1511/2374 cut-off events. For 19925/19929 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11993 event pairs, 404 based on Foata normal form. 20/2393 useless extension candidates. Maximal degree in co-relation 10584. Up to 1876 conditions per place. [2024-06-28 03:04:10,442 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 97 selfloop transitions, 30 changer transitions 0/132 dead transitions. [2024-06-28 03:04:10,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 132 transitions, 1048 flow [2024-06-28 03:04:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:04:10,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-28 03:04:10,443 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 556 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:04:10,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 132 transitions, 1048 flow [2024-06-28 03:04:10,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 1014 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:10,457 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 626 flow [2024-06-28 03:04:10,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-06-28 03:04:10,458 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-06-28 03:04:10,458 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 626 flow [2024-06-28 03:04:10,458 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 03:04:10,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:10,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:10,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:04:10,458 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 03:04:10,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1987046843, now seen corresponding path program 2 times [2024-06-28 03:04:10,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:10,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151624642] [2024-06-28 03:04:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:11,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151624642] [2024-06-28 03:04:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151624642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:11,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444310517] [2024-06-28 03:04:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:11,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:11,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:11,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:11,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 626 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 03:04:11,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:11,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:11,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:12,011 INFO L124 PetriNetUnfolderBase]: 1475/2314 cut-off events. [2024-06-28 03:04:12,011 INFO L125 PetriNetUnfolderBase]: For 21418/21422 co-relation queries the response was YES. [2024-06-28 03:04:12,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10503 conditions, 2314 events. 1475/2314 cut-off events. For 21418/21422 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11579 event pairs, 508 based on Foata normal form. 24/2337 useless extension candidates. Maximal degree in co-relation 10470. Up to 2000 conditions per place. [2024-06-28 03:04:12,023 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 90 selfloop transitions, 27 changer transitions 0/122 dead transitions. [2024-06-28 03:04:12,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 122 transitions, 984 flow [2024-06-28 03:04:12,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:04:12,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 03:04:12,024 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 626 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:04:12,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 122 transitions, 984 flow [2024-06-28 03:04:12,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 122 transitions, 939 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:12,038 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 644 flow [2024-06-28 03:04:12,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=644, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2024-06-28 03:04:12,039 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2024-06-28 03:04:12,039 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 644 flow [2024-06-28 03:04:12,039 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 03:04:12,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:12,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:12,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:04:12,041 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:12,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:12,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2102338013, now seen corresponding path program 3 times [2024-06-28 03:04:12,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:12,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586393365] [2024-06-28 03:04:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:12,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:12,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:12,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586393365] [2024-06-28 03:04:12,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586393365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:12,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:12,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:12,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018493095] [2024-06-28 03:04:12,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:12,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:12,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:12,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:12,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:12,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:12,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 644 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 03:04:12,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:12,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:12,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:13,528 INFO L124 PetriNetUnfolderBase]: 1550/2445 cut-off events. [2024-06-28 03:04:13,528 INFO L125 PetriNetUnfolderBase]: For 24579/24581 co-relation queries the response was YES. [2024-06-28 03:04:13,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11243 conditions, 2445 events. 1550/2445 cut-off events. For 24579/24581 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12480 event pairs, 472 based on Foata normal form. 20/2463 useless extension candidates. Maximal degree in co-relation 11208. Up to 2030 conditions per place. [2024-06-28 03:04:13,540 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 76 selfloop transitions, 40 changer transitions 0/121 dead transitions. [2024-06-28 03:04:13,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 121 transitions, 1010 flow [2024-06-28 03:04:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:04:13,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 03:04:13,542 INFO L175 Difference]: Start difference. First operand has 86 places, 87 transitions, 644 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:04:13,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 121 transitions, 1010 flow [2024-06-28 03:04:13,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 121 transitions, 949 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:13,557 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 692 flow [2024-06-28 03:04:13,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=692, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-06-28 03:04:13,558 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 03:04:13,558 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 692 flow [2024-06-28 03:04:13,558 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 03:04:13,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:13,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:13,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:04:13,558 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 03:04:13,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1149151617, now seen corresponding path program 1 times [2024-06-28 03:04:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160608192] [2024-06-28 03:04:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:14,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160608192] [2024-06-28 03:04:14,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160608192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:14,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:14,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:14,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958144203] [2024-06-28 03:04:14,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:14,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:14,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:14,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:14,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:14,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 692 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 03:04:14,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:14,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:14,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:15,106 INFO L124 PetriNetUnfolderBase]: 1567/2469 cut-off events. [2024-06-28 03:04:15,106 INFO L125 PetriNetUnfolderBase]: For 26398/26402 co-relation queries the response was YES. [2024-06-28 03:04:15,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11604 conditions, 2469 events. 1567/2469 cut-off events. For 26398/26402 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12599 event pairs, 478 based on Foata normal form. 8/2475 useless extension candidates. Maximal degree in co-relation 11568. Up to 2277 conditions per place. [2024-06-28 03:04:15,121 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 91 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-06-28 03:04:15,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 1067 flow [2024-06-28 03:04:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:04:15,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 03:04:15,122 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 692 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:04:15,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 1067 flow [2024-06-28 03:04:15,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 978 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:15,140 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 720 flow [2024-06-28 03:04:15,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2024-06-28 03:04:15,141 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-28 03:04:15,141 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 720 flow [2024-06-28 03:04:15,141 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 03:04:15,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:15,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:15,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:04:15,142 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:15,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 49558087, now seen corresponding path program 1 times [2024-06-28 03:04:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885852084] [2024-06-28 03:04:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:15,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:15,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885852084] [2024-06-28 03:04:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885852084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:15,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813457046] [2024-06-28 03:04:15,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:15,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:15,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:15,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:15,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:15,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:15,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:15,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:16,281 INFO L124 PetriNetUnfolderBase]: 1458/2353 cut-off events. [2024-06-28 03:04:16,282 INFO L125 PetriNetUnfolderBase]: For 28689/28701 co-relation queries the response was YES. [2024-06-28 03:04:16,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 2353 events. 1458/2353 cut-off events. For 28689/28701 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12387 event pairs, 485 based on Foata normal form. 12/2348 useless extension candidates. Maximal degree in co-relation 11394. Up to 2155 conditions per place. [2024-06-28 03:04:16,295 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 77 selfloop transitions, 21 changer transitions 0/110 dead transitions. [2024-06-28 03:04:16,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 982 flow [2024-06-28 03:04:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:04:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:04:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:04:16,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 03:04:16,296 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 720 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:04:16,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 982 flow [2024-06-28 03:04:16,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 110 transitions, 911 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:16,323 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 731 flow [2024-06-28 03:04:16,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=731, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2024-06-28 03:04:16,324 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2024-06-28 03:04:16,324 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 731 flow [2024-06-28 03:04:16,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:16,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:16,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:16,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:04:16,325 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 03:04:16,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash 439904259, now seen corresponding path program 4 times [2024-06-28 03:04:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281193753] [2024-06-28 03:04:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:17,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:17,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281193753] [2024-06-28 03:04:17,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281193753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:17,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:17,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:17,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474329820] [2024-06-28 03:04:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:17,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:17,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:17,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:17,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 731 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 03:04:17,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:17,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:17,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:17,816 INFO L124 PetriNetUnfolderBase]: 1602/2536 cut-off events. [2024-06-28 03:04:17,817 INFO L125 PetriNetUnfolderBase]: For 33397/33401 co-relation queries the response was YES. [2024-06-28 03:04:17,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12471 conditions, 2536 events. 1602/2536 cut-off events. For 33397/33401 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13047 event pairs, 468 based on Foata normal form. 20/2554 useless extension candidates. Maximal degree in co-relation 12432. Up to 2118 conditions per place. [2024-06-28 03:04:17,829 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 82 selfloop transitions, 41 changer transitions 0/128 dead transitions. [2024-06-28 03:04:17,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 128 transitions, 1119 flow [2024-06-28 03:04:17,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:04:17,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-28 03:04:17,831 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 731 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:04:17,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 128 transitions, 1119 flow [2024-06-28 03:04:17,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 1067 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:17,850 INFO L231 Difference]: Finished difference. Result has 95 places, 97 transitions, 794 flow [2024-06-28 03:04:17,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=794, PETRI_PLACES=95, PETRI_TRANSITIONS=97} [2024-06-28 03:04:17,851 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-06-28 03:04:17,851 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 97 transitions, 794 flow [2024-06-28 03:04:17,851 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 03:04:17,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:17,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:17,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:04:17,852 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 03:04:17,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:17,852 INFO L85 PathProgramCache]: Analyzing trace with hash 440088957, now seen corresponding path program 2 times [2024-06-28 03:04:17,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:17,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548169545] [2024-06-28 03:04:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:17,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:18,735 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 03:04:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548169545] [2024-06-28 03:04:18,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548169545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:18,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:18,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:18,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840705869] [2024-06-28 03:04:18,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:18,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:18,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:18,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 794 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 03:04:18,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:18,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:18,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:19,391 INFO L124 PetriNetUnfolderBase]: 1630/2582 cut-off events. [2024-06-28 03:04:19,391 INFO L125 PetriNetUnfolderBase]: For 35164/35172 co-relation queries the response was YES. [2024-06-28 03:04:19,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12998 conditions, 2582 events. 1630/2582 cut-off events. For 35164/35172 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13290 event pairs, 487 based on Foata normal form. 12/2593 useless extension candidates. Maximal degree in co-relation 12958. Up to 2377 conditions per place. [2024-06-28 03:04:19,405 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 95 selfloop transitions, 29 changer transitions 0/129 dead transitions. [2024-06-28 03:04:19,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 129 transitions, 1189 flow [2024-06-28 03:04:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:04:19,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 03:04:19,407 INFO L175 Difference]: Start difference. First operand has 95 places, 97 transitions, 794 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:04:19,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 129 transitions, 1189 flow [2024-06-28 03:04:19,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 129 transitions, 1092 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:19,432 INFO L231 Difference]: Finished difference. Result has 98 places, 103 transitions, 837 flow [2024-06-28 03:04:19,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=837, PETRI_PLACES=98, PETRI_TRANSITIONS=103} [2024-06-28 03:04:19,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-28 03:04:19,432 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 103 transitions, 837 flow [2024-06-28 03:04:19,432 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 03:04:19,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:19,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:19,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:04:19,433 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 03:04:19,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:19,433 INFO L85 PathProgramCache]: Analyzing trace with hash 667990107, now seen corresponding path program 3 times [2024-06-28 03:04:19,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:19,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573842002] [2024-06-28 03:04:19,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:19,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:20,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:20,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573842002] [2024-06-28 03:04:20,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573842002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:20,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:20,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:20,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134518445] [2024-06-28 03:04:20,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:20,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:20,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:20,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:20,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 103 transitions, 837 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 03:04:20,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:20,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:20,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:21,076 INFO L124 PetriNetUnfolderBase]: 1647/2609 cut-off events. [2024-06-28 03:04:21,076 INFO L125 PetriNetUnfolderBase]: For 38120/38128 co-relation queries the response was YES. [2024-06-28 03:04:21,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13424 conditions, 2609 events. 1647/2609 cut-off events. For 38120/38128 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13443 event pairs, 492 based on Foata normal form. 12/2620 useless extension candidates. Maximal degree in co-relation 13382. Up to 2404 conditions per place. [2024-06-28 03:04:21,091 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 96 selfloop transitions, 32 changer transitions 0/133 dead transitions. [2024-06-28 03:04:21,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 133 transitions, 1232 flow [2024-06-28 03:04:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:04:21,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:04:21,092 INFO L175 Difference]: Start difference. First operand has 98 places, 103 transitions, 837 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:04:21,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 133 transitions, 1232 flow [2024-06-28 03:04:21,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 133 transitions, 1143 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:21,114 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 878 flow [2024-06-28 03:04:21,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=878, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-06-28 03:04:21,115 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-28 03:04:21,115 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 878 flow [2024-06-28 03:04:21,115 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 03:04:21,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:21,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:21,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:04:21,116 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 03:04:21,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash 676560987, now seen corresponding path program 4 times [2024-06-28 03:04:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:21,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898795120] [2024-06-28 03:04:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:21,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:22,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:22,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898795120] [2024-06-28 03:04:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898795120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:22,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:22,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432763831] [2024-06-28 03:04:22,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:22,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:22,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:22,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:22,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:22,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 878 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 03:04:22,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:22,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:22,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:22,635 INFO L124 PetriNetUnfolderBase]: 1639/2607 cut-off events. [2024-06-28 03:04:22,635 INFO L125 PetriNetUnfolderBase]: For 40852/40860 co-relation queries the response was YES. [2024-06-28 03:04:22,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13537 conditions, 2607 events. 1639/2607 cut-off events. For 40852/40860 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13594 event pairs, 438 based on Foata normal form. 12/2618 useless extension candidates. Maximal degree in co-relation 13494. Up to 2315 conditions per place. [2024-06-28 03:04:22,678 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 92 selfloop transitions, 39 changer transitions 0/136 dead transitions. [2024-06-28 03:04:22,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 136 transitions, 1266 flow [2024-06-28 03:04:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:04:22,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 03:04:22,680 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 878 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:04:22,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 136 transitions, 1266 flow [2024-06-28 03:04:22,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 136 transitions, 1188 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:22,704 INFO L231 Difference]: Finished difference. Result has 105 places, 109 transitions, 929 flow [2024-06-28 03:04:22,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=929, PETRI_PLACES=105, PETRI_TRANSITIONS=109} [2024-06-28 03:04:22,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2024-06-28 03:04:22,704 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 109 transitions, 929 flow [2024-06-28 03:04:22,705 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 03:04:22,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:22,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:22,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:04:22,705 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:22,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 60985927, now seen corresponding path program 2 times [2024-06-28 03:04:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:22,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440336656] [2024-06-28 03:04:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:23,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:23,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440336656] [2024-06-28 03:04:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440336656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:23,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:23,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:04:23,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233768851] [2024-06-28 03:04:23,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:23,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:04:23,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:23,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:04:23,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:04:23,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:23,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 109 transitions, 929 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:23,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:23,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:23,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:23,721 INFO L124 PetriNetUnfolderBase]: 1526/2485 cut-off events. [2024-06-28 03:04:23,721 INFO L125 PetriNetUnfolderBase]: For 43435/43443 co-relation queries the response was YES. [2024-06-28 03:04:23,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13082 conditions, 2485 events. 1526/2485 cut-off events. For 43435/43443 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13332 event pairs, 504 based on Foata normal form. 9/2477 useless extension candidates. Maximal degree in co-relation 13038. Up to 2248 conditions per place. [2024-06-28 03:04:23,734 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 77 selfloop transitions, 29 changer transitions 0/123 dead transitions. [2024-06-28 03:04:23,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 123 transitions, 1214 flow [2024-06-28 03:04:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:23,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:04:23,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355400696864111 [2024-06-28 03:04:23,736 INFO L175 Difference]: Start difference. First operand has 105 places, 109 transitions, 929 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:04:23,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 123 transitions, 1214 flow [2024-06-28 03:04:23,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 123 transitions, 1103 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:23,758 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 937 flow [2024-06-28 03:04:23,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-06-28 03:04:23,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2024-06-28 03:04:23,759 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 937 flow [2024-06-28 03:04:23,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:23,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:23,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:23,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:04:23,760 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:23,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1152894159, now seen corresponding path program 1 times [2024-06-28 03:04:23,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:23,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892360649] [2024-06-28 03:04:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:23,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:24,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892360649] [2024-06-28 03:04:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892360649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:24,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:24,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:04:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572916395] [2024-06-28 03:04:24,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:24,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:04:24,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:04:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:04:24,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:24,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 937 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:24,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:24,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:24,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:24,805 INFO L124 PetriNetUnfolderBase]: 1476/2420 cut-off events. [2024-06-28 03:04:24,805 INFO L125 PetriNetUnfolderBase]: For 39776/39780 co-relation queries the response was YES. [2024-06-28 03:04:24,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12709 conditions, 2420 events. 1476/2420 cut-off events. For 39776/39780 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 12904 event pairs, 434 based on Foata normal form. 3/2422 useless extension candidates. Maximal degree in co-relation 12663. Up to 2248 conditions per place. [2024-06-28 03:04:24,820 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 111 selfloop transitions, 13 changer transitions 0/130 dead transitions. [2024-06-28 03:04:24,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 1263 flow [2024-06-28 03:04:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:04:24,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:04:24,822 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 937 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:04:24,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 1263 flow [2024-06-28 03:04:24,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 130 transitions, 1206 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:24,853 INFO L231 Difference]: Finished difference. Result has 111 places, 118 transitions, 956 flow [2024-06-28 03:04:24,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=956, PETRI_PLACES=111, PETRI_TRANSITIONS=118} [2024-06-28 03:04:24,854 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2024-06-28 03:04:24,854 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 118 transitions, 956 flow [2024-06-28 03:04:24,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:24,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:24,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:24,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:04:24,855 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:24,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:24,855 INFO L85 PathProgramCache]: Analyzing trace with hash 60991879, now seen corresponding path program 2 times [2024-06-28 03:04:24,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:24,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312368845] [2024-06-28 03:04:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:24,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:25,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312368845] [2024-06-28 03:04:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312368845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:25,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:04:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974794354] [2024-06-28 03:04:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:25,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:04:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:04:25,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:04:25,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:25,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 118 transitions, 956 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:25,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:25,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:25,899 INFO L124 PetriNetUnfolderBase]: 1478/2416 cut-off events. [2024-06-28 03:04:25,899 INFO L125 PetriNetUnfolderBase]: For 42323/42329 co-relation queries the response was YES. [2024-06-28 03:04:25,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13003 conditions, 2416 events. 1478/2416 cut-off events. For 42323/42329 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12811 event pairs, 428 based on Foata normal form. 5/2420 useless extension candidates. Maximal degree in co-relation 12955. Up to 2242 conditions per place. [2024-06-28 03:04:25,915 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 107 selfloop transitions, 18 changer transitions 0/131 dead transitions. [2024-06-28 03:04:25,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 131 transitions, 1280 flow [2024-06-28 03:04:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:04:25,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:04:25,916 INFO L175 Difference]: Start difference. First operand has 111 places, 118 transitions, 956 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:04:25,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 131 transitions, 1280 flow [2024-06-28 03:04:25,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 131 transitions, 1234 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:25,949 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 994 flow [2024-06-28 03:04:25,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=994, PETRI_PLACES=114, PETRI_TRANSITIONS=121} [2024-06-28 03:04:25,950 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-28 03:04:25,950 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 994 flow [2024-06-28 03:04:25,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:25,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:25,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:25,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:04:25,951 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 03:04:25,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash 753695743, now seen corresponding path program 1 times [2024-06-28 03:04:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:25,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536832810] [2024-06-28 03:04:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:25,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536832810] [2024-06-28 03:04:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536832810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:26,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167808524] [2024-06-28 03:04:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:26,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:26,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:26,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:26,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:26,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:26,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 121 transitions, 994 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 03:04:26,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:26,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:26,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:27,649 INFO L124 PetriNetUnfolderBase]: 1768/2849 cut-off events. [2024-06-28 03:04:27,649 INFO L125 PetriNetUnfolderBase]: For 59505/59509 co-relation queries the response was YES. [2024-06-28 03:04:27,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15837 conditions, 2849 events. 1768/2849 cut-off events. For 59505/59509 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15433 event pairs, 415 based on Foata normal form. 13/2860 useless extension candidates. Maximal degree in co-relation 15788. Up to 2228 conditions per place. [2024-06-28 03:04:27,665 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 105 selfloop transitions, 57 changer transitions 0/167 dead transitions. [2024-06-28 03:04:27,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 167 transitions, 1571 flow [2024-06-28 03:04:27,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:04:27,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-28 03:04:27,667 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 994 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:04:27,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 167 transitions, 1571 flow [2024-06-28 03:04:27,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 167 transitions, 1509 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:27,709 INFO L231 Difference]: Finished difference. Result has 120 places, 131 transitions, 1200 flow [2024-06-28 03:04:27,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1200, PETRI_PLACES=120, PETRI_TRANSITIONS=131} [2024-06-28 03:04:27,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2024-06-28 03:04:27,710 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 131 transitions, 1200 flow [2024-06-28 03:04:27,710 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 03:04:27,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:27,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:27,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:04:27,710 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:27,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2035377103, now seen corresponding path program 1 times [2024-06-28 03:04:27,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:27,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984005049] [2024-06-28 03:04:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:27,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984005049] [2024-06-28 03:04:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984005049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:28,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:28,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:28,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317114726] [2024-06-28 03:04:28,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:28,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:28,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:28,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:28,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:28,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 131 transitions, 1200 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:28,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:28,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:28,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:29,026 INFO L124 PetriNetUnfolderBase]: 1655/2726 cut-off events. [2024-06-28 03:04:29,027 INFO L125 PetriNetUnfolderBase]: For 61502/61514 co-relation queries the response was YES. [2024-06-28 03:04:29,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15789 conditions, 2726 events. 1655/2726 cut-off events. For 61502/61514 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15157 event pairs, 463 based on Foata normal form. 11/2718 useless extension candidates. Maximal degree in co-relation 15737. Up to 2459 conditions per place. [2024-06-28 03:04:29,045 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 105 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-28 03:04:29,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 148 transitions, 1532 flow [2024-06-28 03:04:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:04:29,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564459930313589 [2024-06-28 03:04:29,047 INFO L175 Difference]: Start difference. First operand has 120 places, 131 transitions, 1200 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:04:29,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 148 transitions, 1532 flow [2024-06-28 03:04:29,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 148 transitions, 1428 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:29,088 INFO L231 Difference]: Finished difference. Result has 123 places, 134 transitions, 1190 flow [2024-06-28 03:04:29,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1190, PETRI_PLACES=123, PETRI_TRANSITIONS=134} [2024-06-28 03:04:29,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 81 predicate places. [2024-06-28 03:04:29,088 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 134 transitions, 1190 flow [2024-06-28 03:04:29,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:29,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:29,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:29,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:04:29,089 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:29,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash 757856921, now seen corresponding path program 2 times [2024-06-28 03:04:29,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:29,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755159291] [2024-06-28 03:04:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:29,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:30,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:30,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755159291] [2024-06-28 03:04:30,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755159291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:30,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:30,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883332361] [2024-06-28 03:04:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:30,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:30,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 134 transitions, 1190 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 03:04:30,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:30,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:30,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:30,856 INFO L124 PetriNetUnfolderBase]: 1888/3075 cut-off events. [2024-06-28 03:04:30,856 INFO L125 PetriNetUnfolderBase]: For 68175/68179 co-relation queries the response was YES. [2024-06-28 03:04:30,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17527 conditions, 3075 events. 1888/3075 cut-off events. For 68175/68179 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17157 event pairs, 492 based on Foata normal form. 13/3086 useless extension candidates. Maximal degree in co-relation 17474. Up to 2525 conditions per place. [2024-06-28 03:04:30,877 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 110 selfloop transitions, 58 changer transitions 0/173 dead transitions. [2024-06-28 03:04:30,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 173 transitions, 1729 flow [2024-06-28 03:04:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:04:30,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-28 03:04:30,878 INFO L175 Difference]: Start difference. First operand has 123 places, 134 transitions, 1190 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:04:30,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 173 transitions, 1729 flow [2024-06-28 03:04:30,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 173 transitions, 1657 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:30,932 INFO L231 Difference]: Finished difference. Result has 129 places, 140 transitions, 1337 flow [2024-06-28 03:04:30,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1337, PETRI_PLACES=129, PETRI_TRANSITIONS=140} [2024-06-28 03:04:30,933 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 87 predicate places. [2024-06-28 03:04:30,933 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 140 transitions, 1337 flow [2024-06-28 03:04:30,933 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 03:04:30,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:30,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:30,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:04:30,933 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:30,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1850730505, now seen corresponding path program 3 times [2024-06-28 03:04:30,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:30,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68764524] [2024-06-28 03:04:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:30,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:31,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68764524] [2024-06-28 03:04:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68764524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:31,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:31,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:31,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86918072] [2024-06-28 03:04:31,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:31,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:31,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:31,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:31,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:31,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 140 transitions, 1337 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 03:04:31,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:31,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:31,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:32,492 INFO L124 PetriNetUnfolderBase]: 1970/3227 cut-off events. [2024-06-28 03:04:32,492 INFO L125 PetriNetUnfolderBase]: For 75877/75881 co-relation queries the response was YES. [2024-06-28 03:04:32,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18795 conditions, 3227 events. 1970/3227 cut-off events. For 75877/75881 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18332 event pairs, 517 based on Foata normal form. 13/3238 useless extension candidates. Maximal degree in co-relation 18739. Up to 2667 conditions per place. [2024-06-28 03:04:32,515 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 110 selfloop transitions, 62 changer transitions 0/177 dead transitions. [2024-06-28 03:04:32,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 177 transitions, 1879 flow [2024-06-28 03:04:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:04:32,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 03:04:32,518 INFO L175 Difference]: Start difference. First operand has 129 places, 140 transitions, 1337 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:04:32,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 177 transitions, 1879 flow [2024-06-28 03:04:32,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 177 transitions, 1754 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:32,573 INFO L231 Difference]: Finished difference. Result has 135 places, 144 transitions, 1422 flow [2024-06-28 03:04:32,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1422, PETRI_PLACES=135, PETRI_TRANSITIONS=144} [2024-06-28 03:04:32,574 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-28 03:04:32,574 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 144 transitions, 1422 flow [2024-06-28 03:04:32,574 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 03:04:32,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:32,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:32,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:04:32,574 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 03:04:32,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1989809817, now seen corresponding path program 4 times [2024-06-28 03:04:32,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:32,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25430251] [2024-06-28 03:04:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:32,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:33,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25430251] [2024-06-28 03:04:33,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25430251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:33,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:33,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:33,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313849023] [2024-06-28 03:04:33,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:33,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:33,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:33,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:33,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:33,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:33,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 144 transitions, 1422 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 03:04:33,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:33,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:33,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:34,179 INFO L124 PetriNetUnfolderBase]: 1950/3196 cut-off events. [2024-06-28 03:04:34,179 INFO L125 PetriNetUnfolderBase]: For 75985/75989 co-relation queries the response was YES. [2024-06-28 03:04:34,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18308 conditions, 3196 events. 1950/3196 cut-off events. For 75985/75989 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18055 event pairs, 368 based on Foata normal form. 16/3211 useless extension candidates. Maximal degree in co-relation 18250. Up to 2065 conditions per place. [2024-06-28 03:04:34,200 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 99 selfloop transitions, 74 changer transitions 0/178 dead transitions. [2024-06-28 03:04:34,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 178 transitions, 1861 flow [2024-06-28 03:04:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 03:04:34,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45365853658536587 [2024-06-28 03:04:34,204 INFO L175 Difference]: Start difference. First operand has 135 places, 144 transitions, 1422 flow. Second operand 10 states and 186 transitions. [2024-06-28 03:04:34,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 178 transitions, 1861 flow [2024-06-28 03:04:34,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 178 transitions, 1743 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:34,274 INFO L231 Difference]: Finished difference. Result has 140 places, 143 transitions, 1412 flow [2024-06-28 03:04:34,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1412, PETRI_PLACES=140, PETRI_TRANSITIONS=143} [2024-06-28 03:04:34,275 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 98 predicate places. [2024-06-28 03:04:34,275 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 143 transitions, 1412 flow [2024-06-28 03:04:34,275 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 03:04:34,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:34,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:34,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:04:34,276 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:34,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash 170449307, now seen corresponding path program 2 times [2024-06-28 03:04:34,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:34,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942605375] [2024-06-28 03:04:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:34,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:35,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:35,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942605375] [2024-06-28 03:04:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942605375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:35,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:35,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:35,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824130028] [2024-06-28 03:04:35,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:35,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:35,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:35,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:35,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:35,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 1412 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:35,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:35,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:35,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:35,586 INFO L124 PetriNetUnfolderBase]: 1810/3015 cut-off events. [2024-06-28 03:04:35,586 INFO L125 PetriNetUnfolderBase]: For 75552/75570 co-relation queries the response was YES. [2024-06-28 03:04:35,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17619 conditions, 3015 events. 1810/3015 cut-off events. For 75552/75570 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 17501 event pairs, 489 based on Foata normal form. 13/2998 useless extension candidates. Maximal degree in co-relation 17560. Up to 2712 conditions per place. [2024-06-28 03:04:35,608 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 107 selfloop transitions, 37 changer transitions 0/161 dead transitions. [2024-06-28 03:04:35,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 1864 flow [2024-06-28 03:04:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:04:35,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445993031358885 [2024-06-28 03:04:35,610 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 1412 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:04:35,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 1864 flow [2024-06-28 03:04:35,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 161 transitions, 1670 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:35,662 INFO L231 Difference]: Finished difference. Result has 139 places, 151 transitions, 1399 flow [2024-06-28 03:04:35,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1399, PETRI_PLACES=139, PETRI_TRANSITIONS=151} [2024-06-28 03:04:35,662 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-06-28 03:04:35,662 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 151 transitions, 1399 flow [2024-06-28 03:04:35,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:35,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:35,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:35,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:04:35,663 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:35,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1890564861, now seen corresponding path program 3 times [2024-06-28 03:04:35,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:35,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883187652] [2024-06-28 03:04:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:35,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:36,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:36,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883187652] [2024-06-28 03:04:36,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883187652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:36,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:36,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:36,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243164176] [2024-06-28 03:04:36,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:36,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:36,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:36,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 151 transitions, 1399 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:36,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:36,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:36,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:36,952 INFO L124 PetriNetUnfolderBase]: 1810/3002 cut-off events. [2024-06-28 03:04:36,952 INFO L125 PetriNetUnfolderBase]: For 77404/77422 co-relation queries the response was YES. [2024-06-28 03:04:36,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17473 conditions, 3002 events. 1810/3002 cut-off events. For 77404/77422 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17250 event pairs, 488 based on Foata normal form. 12/2978 useless extension candidates. Maximal degree in co-relation 17413. Up to 2725 conditions per place. [2024-06-28 03:04:36,974 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 114 selfloop transitions, 30 changer transitions 0/161 dead transitions. [2024-06-28 03:04:36,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 161 transitions, 1718 flow [2024-06-28 03:04:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 03:04:36,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:04:36,975 INFO L175 Difference]: Start difference. First operand has 139 places, 151 transitions, 1399 flow. Second operand 7 states and 126 transitions. [2024-06-28 03:04:36,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 161 transitions, 1718 flow [2024-06-28 03:04:37,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 161 transitions, 1633 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:37,031 INFO L231 Difference]: Finished difference. Result has 143 places, 152 transitions, 1389 flow [2024-06-28 03:04:37,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1389, PETRI_PLACES=143, PETRI_TRANSITIONS=152} [2024-06-28 03:04:37,032 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2024-06-28 03:04:37,032 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 152 transitions, 1389 flow [2024-06-28 03:04:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:37,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:37,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:04:37,033 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:37,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1713497697, now seen corresponding path program 1 times [2024-06-28 03:04:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361477126] [2024-06-28 03:04:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:37,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:37,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361477126] [2024-06-28 03:04:37,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361477126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:37,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:37,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:37,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793312072] [2024-06-28 03:04:37,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:37,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:37,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:37,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:37,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:37,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 152 transitions, 1389 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:37,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:37,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:37,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:38,165 INFO L124 PetriNetUnfolderBase]: 1866/3112 cut-off events. [2024-06-28 03:04:38,165 INFO L125 PetriNetUnfolderBase]: For 81490/81494 co-relation queries the response was YES. [2024-06-28 03:04:38,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18059 conditions, 3112 events. 1866/3112 cut-off events. For 81490/81494 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17981 event pairs, 490 based on Foata normal form. 2/3113 useless extension candidates. Maximal degree in co-relation 17997. Up to 2847 conditions per place. [2024-06-28 03:04:38,188 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 145 selfloop transitions, 15 changer transitions 0/170 dead transitions. [2024-06-28 03:04:38,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 170 transitions, 1795 flow [2024-06-28 03:04:38,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:38,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 03:04:38,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529616724738676 [2024-06-28 03:04:38,189 INFO L175 Difference]: Start difference. First operand has 143 places, 152 transitions, 1389 flow. Second operand 7 states and 130 transitions. [2024-06-28 03:04:38,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 170 transitions, 1795 flow [2024-06-28 03:04:38,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 170 transitions, 1731 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:38,246 INFO L231 Difference]: Finished difference. Result has 145 places, 155 transitions, 1409 flow [2024-06-28 03:04:38,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1409, PETRI_PLACES=145, PETRI_TRANSITIONS=155} [2024-06-28 03:04:38,246 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-28 03:04:38,247 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 155 transitions, 1409 flow [2024-06-28 03:04:38,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:38,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:38,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:38,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:04:38,247 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:38,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1713617853, now seen corresponding path program 1 times [2024-06-28 03:04:38,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:38,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152979936] [2024-06-28 03:04:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:38,959 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 03:04:38,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:38,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152979936] [2024-06-28 03:04:38,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152979936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:38,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:38,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:38,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599477940] [2024-06-28 03:04:38,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:38,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:38,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:38,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:38,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:39,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:39,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 155 transitions, 1409 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:39,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:39,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:39,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:39,505 INFO L124 PetriNetUnfolderBase]: 1881/3135 cut-off events. [2024-06-28 03:04:39,506 INFO L125 PetriNetUnfolderBase]: For 88083/88087 co-relation queries the response was YES. [2024-06-28 03:04:39,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18556 conditions, 3135 events. 1881/3135 cut-off events. For 88083/88087 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18124 event pairs, 488 based on Foata normal form. 5/3139 useless extension candidates. Maximal degree in co-relation 18493. Up to 2866 conditions per place. [2024-06-28 03:04:39,526 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 146 selfloop transitions, 16 changer transitions 0/172 dead transitions. [2024-06-28 03:04:39,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 172 transitions, 1821 flow [2024-06-28 03:04:39,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:04:39,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44947735191637633 [2024-06-28 03:04:39,527 INFO L175 Difference]: Start difference. First operand has 145 places, 155 transitions, 1409 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:04:39,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 172 transitions, 1821 flow [2024-06-28 03:04:39,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 172 transitions, 1759 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:39,593 INFO L231 Difference]: Finished difference. Result has 147 places, 159 transitions, 1440 flow [2024-06-28 03:04:39,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1440, PETRI_PLACES=147, PETRI_TRANSITIONS=159} [2024-06-28 03:04:39,593 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-28 03:04:39,593 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 159 transitions, 1440 flow [2024-06-28 03:04:39,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:39,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:39,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:39,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:04:39,594 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:39,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1890986523, now seen corresponding path program 2 times [2024-06-28 03:04:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:39,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888182267] [2024-06-28 03:04:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:39,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:40,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:40,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888182267] [2024-06-28 03:04:40,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888182267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:40,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:40,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:40,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281434571] [2024-06-28 03:04:40,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:40,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:40,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:40,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:40,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:40,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:40,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 159 transitions, 1440 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:40,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:40,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:40,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:40,825 INFO L124 PetriNetUnfolderBase]: 1912/3183 cut-off events. [2024-06-28 03:04:40,825 INFO L125 PetriNetUnfolderBase]: For 95888/95894 co-relation queries the response was YES. [2024-06-28 03:04:40,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19494 conditions, 3183 events. 1912/3183 cut-off events. For 95888/95894 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18465 event pairs, 490 based on Foata normal form. 6/3188 useless extension candidates. Maximal degree in co-relation 19430. Up to 2856 conditions per place. [2024-06-28 03:04:40,849 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 139 selfloop transitions, 31 changer transitions 0/180 dead transitions. [2024-06-28 03:04:40,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 180 transitions, 1996 flow [2024-06-28 03:04:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:04:40,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45993031358885017 [2024-06-28 03:04:40,850 INFO L175 Difference]: Start difference. First operand has 147 places, 159 transitions, 1440 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:04:40,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 180 transitions, 1996 flow [2024-06-28 03:04:40,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 180 transitions, 1931 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:40,920 INFO L231 Difference]: Finished difference. Result has 150 places, 167 transitions, 1574 flow [2024-06-28 03:04:40,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1574, PETRI_PLACES=150, PETRI_TRANSITIONS=167} [2024-06-28 03:04:40,920 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 03:04:40,920 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 167 transitions, 1574 flow [2024-06-28 03:04:40,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:40,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:40,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:40,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:04:40,921 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:40,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:40,921 INFO L85 PathProgramCache]: Analyzing trace with hash 170621729, now seen corresponding path program 3 times [2024-06-28 03:04:40,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:40,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104588372] [2024-06-28 03:04:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:40,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:41,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:41,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104588372] [2024-06-28 03:04:41,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104588372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:41,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:41,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:41,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964064308] [2024-06-28 03:04:41,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:41,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:41,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:41,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:41,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:41,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 167 transitions, 1574 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:41,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:41,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:41,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:42,333 INFO L124 PetriNetUnfolderBase]: 1900/3167 cut-off events. [2024-06-28 03:04:42,333 INFO L125 PetriNetUnfolderBase]: For 102212/102218 co-relation queries the response was YES. [2024-06-28 03:04:42,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20064 conditions, 3167 events. 1900/3167 cut-off events. For 102212/102218 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18372 event pairs, 492 based on Foata normal form. 7/3173 useless extension candidates. Maximal degree in co-relation 19998. Up to 2885 conditions per place. [2024-06-28 03:04:42,358 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 151 selfloop transitions, 21 changer transitions 0/182 dead transitions. [2024-06-28 03:04:42,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 182 transitions, 2033 flow [2024-06-28 03:04:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:04:42,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44947735191637633 [2024-06-28 03:04:42,359 INFO L175 Difference]: Start difference. First operand has 150 places, 167 transitions, 1574 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:04:42,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 182 transitions, 2033 flow [2024-06-28 03:04:42,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 182 transitions, 1974 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:42,439 INFO L231 Difference]: Finished difference. Result has 154 places, 171 transitions, 1635 flow [2024-06-28 03:04:42,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1635, PETRI_PLACES=154, PETRI_TRANSITIONS=171} [2024-06-28 03:04:42,440 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2024-06-28 03:04:42,440 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 171 transitions, 1635 flow [2024-06-28 03:04:42,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:42,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:42,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:42,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:04:42,440 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:42,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:42,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1890995451, now seen corresponding path program 1 times [2024-06-28 03:04:42,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:42,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568787731] [2024-06-28 03:04:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:42,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:43,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:43,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:43,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568787731] [2024-06-28 03:04:43,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568787731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:43,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:43,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:43,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787933178] [2024-06-28 03:04:43,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:43,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:43,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:43,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:43,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 171 transitions, 1635 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:43,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:43,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:43,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:44,030 INFO L124 PetriNetUnfolderBase]: 1846/3062 cut-off events. [2024-06-28 03:04:44,031 INFO L125 PetriNetUnfolderBase]: For 103151/103167 co-relation queries the response was YES. [2024-06-28 03:04:44,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19912 conditions, 3062 events. 1846/3062 cut-off events. For 103151/103167 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17697 event pairs, 485 based on Foata normal form. 10/3041 useless extension candidates. Maximal degree in co-relation 19844. Up to 2819 conditions per place. [2024-06-28 03:04:44,053 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 148 selfloop transitions, 18 changer transitions 0/183 dead transitions. [2024-06-28 03:04:44,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 183 transitions, 2023 flow [2024-06-28 03:04:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:04:44,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 03:04:44,054 INFO L175 Difference]: Start difference. First operand has 154 places, 171 transitions, 1635 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:04:44,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 183 transitions, 2023 flow [2024-06-28 03:04:44,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 183 transitions, 1950 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:44,112 INFO L231 Difference]: Finished difference. Result has 157 places, 173 transitions, 1638 flow [2024-06-28 03:04:44,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1638, PETRI_PLACES=157, PETRI_TRANSITIONS=173} [2024-06-28 03:04:44,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-28 03:04:44,113 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 173 transitions, 1638 flow [2024-06-28 03:04:44,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:44,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:44,113 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 03:04:44,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:04:44,114 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 03:04:44,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash 518877354, now seen corresponding path program 1 times [2024-06-28 03:04:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:44,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946850028] [2024-06-28 03:04:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:44,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946850028] [2024-06-28 03:04:44,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946850028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:44,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:44,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:44,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375062572] [2024-06-28 03:04:44,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:44,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:44,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:44,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:44,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:44,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:44,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 173 transitions, 1638 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:44,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:44,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:44,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:45,388 INFO L124 PetriNetUnfolderBase]: 2023/3306 cut-off events. [2024-06-28 03:04:45,388 INFO L125 PetriNetUnfolderBase]: For 109062/109064 co-relation queries the response was YES. [2024-06-28 03:04:45,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21108 conditions, 3306 events. 2023/3306 cut-off events. For 109062/109064 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18762 event pairs, 509 based on Foata normal form. 4/3309 useless extension candidates. Maximal degree in co-relation 21039. Up to 3066 conditions per place. [2024-06-28 03:04:45,414 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 167 selfloop transitions, 30 changer transitions 0/202 dead transitions. [2024-06-28 03:04:45,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 202 transitions, 2226 flow [2024-06-28 03:04:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:04:45,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 03:04:45,416 INFO L175 Difference]: Start difference. First operand has 157 places, 173 transitions, 1638 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:04:45,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 202 transitions, 2226 flow [2024-06-28 03:04:45,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 202 transitions, 2126 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:45,495 INFO L231 Difference]: Finished difference. Result has 160 places, 184 transitions, 1755 flow [2024-06-28 03:04:45,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1755, PETRI_PLACES=160, PETRI_TRANSITIONS=184} [2024-06-28 03:04:45,495 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 03:04:45,495 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 184 transitions, 1755 flow [2024-06-28 03:04:45,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:45,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:45,496 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 03:04:45,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:04:45,497 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:45,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:45,497 INFO L85 PathProgramCache]: Analyzing trace with hash 380709414, now seen corresponding path program 2 times [2024-06-28 03:04:45,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:45,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011275461] [2024-06-28 03:04:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:45,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:46,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:46,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011275461] [2024-06-28 03:04:46,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011275461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:46,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240901900] [2024-06-28 03:04:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:46,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:46,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:46,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 184 transitions, 1755 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:46,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:46,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:46,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:46,871 INFO L124 PetriNetUnfolderBase]: 2049/3348 cut-off events. [2024-06-28 03:04:46,872 INFO L125 PetriNetUnfolderBase]: For 117375/117377 co-relation queries the response was YES. [2024-06-28 03:04:46,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21967 conditions, 3348 events. 2049/3348 cut-off events. For 117375/117377 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 19064 event pairs, 509 based on Foata normal form. 4/3351 useless extension candidates. Maximal degree in co-relation 21896. Up to 3078 conditions per place. [2024-06-28 03:04:46,899 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 170 selfloop transitions, 35 changer transitions 0/210 dead transitions. [2024-06-28 03:04:46,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 210 transitions, 2430 flow [2024-06-28 03:04:46,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 03:04:46,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529616724738676 [2024-06-28 03:04:46,901 INFO L175 Difference]: Start difference. First operand has 160 places, 184 transitions, 1755 flow. Second operand 7 states and 130 transitions. [2024-06-28 03:04:46,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 210 transitions, 2430 flow [2024-06-28 03:04:47,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 210 transitions, 2368 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 03:04:47,010 INFO L231 Difference]: Finished difference. Result has 166 places, 192 transitions, 1908 flow [2024-06-28 03:04:47,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1908, PETRI_PLACES=166, PETRI_TRANSITIONS=192} [2024-06-28 03:04:47,010 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-28 03:04:47,011 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 192 transitions, 1908 flow [2024-06-28 03:04:47,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:47,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:47,011 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 03:04:47,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:04:47,011 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:47,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash 524599210, now seen corresponding path program 1 times [2024-06-28 03:04:47,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:47,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805287655] [2024-06-28 03:04:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:47,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:47,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805287655] [2024-06-28 03:04:47,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805287655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:47,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:47,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56362175] [2024-06-28 03:04:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:47,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:47,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:47,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 192 transitions, 1908 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:47,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:47,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:47,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:48,561 INFO L124 PetriNetUnfolderBase]: 1917/3168 cut-off events. [2024-06-28 03:04:48,561 INFO L125 PetriNetUnfolderBase]: For 125120/125156 co-relation queries the response was YES. [2024-06-28 03:04:48,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21557 conditions, 3168 events. 1917/3168 cut-off events. For 125120/125156 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18262 event pairs, 478 based on Foata normal form. 20/3154 useless extension candidates. Maximal degree in co-relation 21483. Up to 2840 conditions per place. [2024-06-28 03:04:48,589 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 155 selfloop transitions, 33 changer transitions 0/211 dead transitions. [2024-06-28 03:04:48,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 211 transitions, 2376 flow [2024-06-28 03:04:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:04:48,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:04:48,591 INFO L175 Difference]: Start difference. First operand has 166 places, 192 transitions, 1908 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:04:48,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 211 transitions, 2376 flow [2024-06-28 03:04:48,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 211 transitions, 2300 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:48,703 INFO L231 Difference]: Finished difference. Result has 171 places, 195 transitions, 1952 flow [2024-06-28 03:04:48,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1952, PETRI_PLACES=171, PETRI_TRANSITIONS=195} [2024-06-28 03:04:48,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-28 03:04:48,704 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 195 transitions, 1952 flow [2024-06-28 03:04:48,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:48,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:48,704 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 03:04:48,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:04:48,704 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:48,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1571105318, now seen corresponding path program 3 times [2024-06-28 03:04:48,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:48,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644423718] [2024-06-28 03:04:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:48,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:49,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:49,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644423718] [2024-06-28 03:04:49,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644423718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:49,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:49,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:49,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045855349] [2024-06-28 03:04:49,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:49,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:49,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:49,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:49,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:49,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:49,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 195 transitions, 1952 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:49,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:49,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:49,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:50,067 INFO L124 PetriNetUnfolderBase]: 2079/3389 cut-off events. [2024-06-28 03:04:50,067 INFO L125 PetriNetUnfolderBase]: For 131322/131324 co-relation queries the response was YES. [2024-06-28 03:04:50,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23266 conditions, 3389 events. 2079/3389 cut-off events. For 131322/131324 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19307 event pairs, 510 based on Foata normal form. 4/3392 useless extension candidates. Maximal degree in co-relation 23190. Up to 3144 conditions per place. [2024-06-28 03:04:50,096 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 179 selfloop transitions, 31 changer transitions 0/215 dead transitions. [2024-06-28 03:04:50,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 215 transitions, 2491 flow [2024-06-28 03:04:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:50,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:04:50,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 03:04:50,098 INFO L175 Difference]: Start difference. First operand has 171 places, 195 transitions, 1952 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:04:50,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 215 transitions, 2491 flow [2024-06-28 03:04:50,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 215 transitions, 2395 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:50,206 INFO L231 Difference]: Finished difference. Result has 173 places, 198 transitions, 1985 flow [2024-06-28 03:04:50,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1985, PETRI_PLACES=173, PETRI_TRANSITIONS=198} [2024-06-28 03:04:50,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 131 predicate places. [2024-06-28 03:04:50,207 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 198 transitions, 1985 flow [2024-06-28 03:04:50,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:50,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:50,208 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 03:04:50,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:04:50,208 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:50,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1715626104, now seen corresponding path program 4 times [2024-06-28 03:04:50,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:50,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202121372] [2024-06-28 03:04:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:50,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:50,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202121372] [2024-06-28 03:04:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202121372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:50,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:50,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:50,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613441073] [2024-06-28 03:04:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:50,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:50,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:50,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:50,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 198 transitions, 1985 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:50,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:50,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:50,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:51,509 INFO L124 PetriNetUnfolderBase]: 2089/3403 cut-off events. [2024-06-28 03:04:51,510 INFO L125 PetriNetUnfolderBase]: For 136633/136635 co-relation queries the response was YES. [2024-06-28 03:04:51,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23449 conditions, 3403 events. 2089/3403 cut-off events. For 136633/136635 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19368 event pairs, 510 based on Foata normal form. 4/3406 useless extension candidates. Maximal degree in co-relation 23372. Up to 3129 conditions per place. [2024-06-28 03:04:51,538 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 173 selfloop transitions, 40 changer transitions 0/218 dead transitions. [2024-06-28 03:04:51,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 218 transitions, 2636 flow [2024-06-28 03:04:51,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:04:51,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-28 03:04:51,540 INFO L175 Difference]: Start difference. First operand has 173 places, 198 transitions, 1985 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:04:51,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 218 transitions, 2636 flow [2024-06-28 03:04:51,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 218 transitions, 2536 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:51,636 INFO L231 Difference]: Finished difference. Result has 175 places, 202 transitions, 2070 flow [2024-06-28 03:04:51,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2070, PETRI_PLACES=175, PETRI_TRANSITIONS=202} [2024-06-28 03:04:51,637 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-06-28 03:04:51,637 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 202 transitions, 2070 flow [2024-06-28 03:04:51,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:51,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:51,637 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 03:04:51,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:04:51,638 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:51,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:51,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1522038234, now seen corresponding path program 5 times [2024-06-28 03:04:51,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:51,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471345168] [2024-06-28 03:04:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:51,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:52,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471345168] [2024-06-28 03:04:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471345168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:52,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989246446] [2024-06-28 03:04:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:52,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:52,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 202 transitions, 2070 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:52,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:52,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:52,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:52,917 INFO L124 PetriNetUnfolderBase]: 2107/3436 cut-off events. [2024-06-28 03:04:52,917 INFO L125 PetriNetUnfolderBase]: For 146133/146137 co-relation queries the response was YES. [2024-06-28 03:04:52,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24221 conditions, 3436 events. 2107/3436 cut-off events. For 146133/146137 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19583 event pairs, 524 based on Foata normal form. 6/3441 useless extension candidates. Maximal degree in co-relation 24142. Up to 3112 conditions per place. [2024-06-28 03:04:52,949 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 164 selfloop transitions, 56 changer transitions 0/225 dead transitions. [2024-06-28 03:04:52,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 225 transitions, 2889 flow [2024-06-28 03:04:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:04:52,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:04:52,951 INFO L175 Difference]: Start difference. First operand has 175 places, 202 transitions, 2070 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:04:52,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 225 transitions, 2889 flow [2024-06-28 03:04:53,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 225 transitions, 2781 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:53,091 INFO L231 Difference]: Finished difference. Result has 180 places, 210 transitions, 2240 flow [2024-06-28 03:04:53,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2240, PETRI_PLACES=180, PETRI_TRANSITIONS=210} [2024-06-28 03:04:53,092 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-28 03:04:53,092 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 210 transitions, 2240 flow [2024-06-28 03:04:53,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:53,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:53,092 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 03:04:53,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:04:53,093 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:53,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1516324314, now seen corresponding path program 6 times [2024-06-28 03:04:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:53,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505528619] [2024-06-28 03:04:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:53,790 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 03:04:53,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505528619] [2024-06-28 03:04:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505528619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:53,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:53,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:53,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480745675] [2024-06-28 03:04:53,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:53,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:04:53,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 210 transitions, 2240 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:53,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:53,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:04:53,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:54,407 INFO L124 PetriNetUnfolderBase]: 2101/3428 cut-off events. [2024-06-28 03:04:54,408 INFO L125 PetriNetUnfolderBase]: For 152847/152851 co-relation queries the response was YES. [2024-06-28 03:04:54,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24540 conditions, 3428 events. 2101/3428 cut-off events. For 152847/152851 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19622 event pairs, 526 based on Foata normal form. 6/3433 useless extension candidates. Maximal degree in co-relation 24459. Up to 3107 conditions per place. [2024-06-28 03:04:54,440 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 163 selfloop transitions, 57 changer transitions 0/225 dead transitions. [2024-06-28 03:04:54,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 225 transitions, 2859 flow [2024-06-28 03:04:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:04:54,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-28 03:04:54,441 INFO L175 Difference]: Start difference. First operand has 180 places, 210 transitions, 2240 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:04:54,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 225 transitions, 2859 flow [2024-06-28 03:04:54,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 225 transitions, 2655 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:54,573 INFO L231 Difference]: Finished difference. Result has 183 places, 211 transitions, 2177 flow [2024-06-28 03:04:54,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2177, PETRI_PLACES=183, PETRI_TRANSITIONS=211} [2024-06-28 03:04:54,573 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2024-06-28 03:04:54,573 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 211 transitions, 2177 flow [2024-06-28 03:04:54,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:54,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:54,574 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 03:04:54,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:04:54,574 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:54,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1522030298, now seen corresponding path program 2 times [2024-06-28 03:04:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:54,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313917226] [2024-06-28 03:04:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:54,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:55,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:55,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313917226] [2024-06-28 03:04:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313917226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:55,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:55,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:55,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738718632] [2024-06-28 03:04:55,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:55,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:55,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:55,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:55,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:55,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:55,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 211 transitions, 2177 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:55,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:55,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:55,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:55,950 INFO L124 PetriNetUnfolderBase]: 1951/3220 cut-off events. [2024-06-28 03:04:55,950 INFO L125 PetriNetUnfolderBase]: For 154928/154993 co-relation queries the response was YES. [2024-06-28 03:04:55,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23136 conditions, 3220 events. 1951/3220 cut-off events. For 154928/154993 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18718 event pairs, 487 based on Foata normal form. 21/3202 useless extension candidates. Maximal degree in co-relation 23054. Up to 2883 conditions per place. [2024-06-28 03:04:55,981 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 157 selfloop transitions, 39 changer transitions 0/225 dead transitions. [2024-06-28 03:04:55,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 225 transitions, 2651 flow [2024-06-28 03:04:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:04:55,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:04:55,983 INFO L175 Difference]: Start difference. First operand has 183 places, 211 transitions, 2177 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:04:55,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 225 transitions, 2651 flow [2024-06-28 03:04:56,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 225 transitions, 2563 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:56,122 INFO L231 Difference]: Finished difference. Result has 186 places, 214 transitions, 2227 flow [2024-06-28 03:04:56,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2227, PETRI_PLACES=186, PETRI_TRANSITIONS=214} [2024-06-28 03:04:56,123 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-28 03:04:56,123 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 214 transitions, 2227 flow [2024-06-28 03:04:56,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:56,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:56,123 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 03:04:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:04:56,123 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 03:04:56,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1509143288, now seen corresponding path program 3 times [2024-06-28 03:04:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:56,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232080965] [2024-06-28 03:04:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:57,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:57,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232080965] [2024-06-28 03:04:57,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232080965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:57,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:57,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927832957] [2024-06-28 03:04:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:57,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:57,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:57,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 214 transitions, 2227 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:57,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:57,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:57,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:57,871 INFO L124 PetriNetUnfolderBase]: 1970/3244 cut-off events. [2024-06-28 03:04:57,871 INFO L125 PetriNetUnfolderBase]: For 158652/158701 co-relation queries the response was YES. [2024-06-28 03:04:57,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23727 conditions, 3244 events. 1970/3244 cut-off events. For 158652/158701 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18704 event pairs, 486 based on Foata normal form. 22/3228 useless extension candidates. Maximal degree in co-relation 23644. Up to 2870 conditions per place. [2024-06-28 03:04:57,904 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 152 selfloop transitions, 55 changer transitions 0/236 dead transitions. [2024-06-28 03:04:57,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 236 transitions, 2931 flow [2024-06-28 03:04:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:04:57,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:04:57,906 INFO L175 Difference]: Start difference. First operand has 186 places, 214 transitions, 2227 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:04:57,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 236 transitions, 2931 flow [2024-06-28 03:04:58,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 236 transitions, 2779 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:58,046 INFO L231 Difference]: Finished difference. Result has 189 places, 225 transitions, 2398 flow [2024-06-28 03:04:58,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2113, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2398, PETRI_PLACES=189, PETRI_TRANSITIONS=225} [2024-06-28 03:04:58,047 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 147 predicate places. [2024-06-28 03:04:58,047 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 225 transitions, 2398 flow [2024-06-28 03:04:58,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:58,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:58,047 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 03:04:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:04:58,048 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:58,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1509130268, now seen corresponding path program 4 times [2024-06-28 03:04:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905989798] [2024-06-28 03:04:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:58,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:58,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905989798] [2024-06-28 03:04:58,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905989798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:58,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:58,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:58,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590981435] [2024-06-28 03:04:58,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:58,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:58,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:04:58,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 225 transitions, 2398 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:58,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:58,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:04:58,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:59,583 INFO L124 PetriNetUnfolderBase]: 1964/3246 cut-off events. [2024-06-28 03:04:59,584 INFO L125 PetriNetUnfolderBase]: For 166371/166423 co-relation queries the response was YES. [2024-06-28 03:04:59,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24073 conditions, 3246 events. 1964/3246 cut-off events. For 166371/166423 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18806 event pairs, 492 based on Foata normal form. 21/3234 useless extension candidates. Maximal degree in co-relation 23988. Up to 2938 conditions per place. [2024-06-28 03:04:59,615 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 187 selfloop transitions, 22 changer transitions 0/238 dead transitions. [2024-06-28 03:04:59,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 238 transitions, 2900 flow [2024-06-28 03:04:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:04:59,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 03:04:59,616 INFO L175 Difference]: Start difference. First operand has 189 places, 225 transitions, 2398 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:04:59,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 238 transitions, 2900 flow [2024-06-28 03:04:59,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 238 transitions, 2764 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:59,775 INFO L231 Difference]: Finished difference. Result has 194 places, 228 transitions, 2379 flow [2024-06-28 03:04:59,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2379, PETRI_PLACES=194, PETRI_TRANSITIONS=228} [2024-06-28 03:04:59,775 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2024-06-28 03:04:59,775 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 228 transitions, 2379 flow [2024-06-28 03:04:59,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:59,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:59,776 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 03:04:59,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:04:59,776 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:59,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1056307272, now seen corresponding path program 7 times [2024-06-28 03:04:59,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:59,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098713998] [2024-06-28 03:04:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:00,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:00,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098713998] [2024-06-28 03:05:00,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098713998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:00,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:00,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047060964] [2024-06-28 03:05:00,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:00,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:00,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:00,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:00,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:00,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:00,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 228 transitions, 2379 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:00,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:00,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:00,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:01,160 INFO L124 PetriNetUnfolderBase]: 2173/3533 cut-off events. [2024-06-28 03:05:01,161 INFO L125 PetriNetUnfolderBase]: For 173553/173555 co-relation queries the response was YES. [2024-06-28 03:05:01,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26155 conditions, 3533 events. 2173/3533 cut-off events. For 173553/173555 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20088 event pairs, 514 based on Foata normal form. 4/3536 useless extension candidates. Maximal degree in co-relation 26068. Up to 3269 conditions per place. [2024-06-28 03:05:01,198 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 219 selfloop transitions, 45 changer transitions 0/269 dead transitions. [2024-06-28 03:05:01,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 269 transitions, 3226 flow [2024-06-28 03:05:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:05:01,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:05:01,199 INFO L175 Difference]: Start difference. First operand has 194 places, 228 transitions, 2379 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:05:01,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 269 transitions, 3226 flow [2024-06-28 03:05:01,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 269 transitions, 3137 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:01,378 INFO L231 Difference]: Finished difference. Result has 199 places, 246 transitions, 2663 flow [2024-06-28 03:05:01,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2663, PETRI_PLACES=199, PETRI_TRANSITIONS=246} [2024-06-28 03:05:01,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-06-28 03:05:01,379 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 246 transitions, 2663 flow [2024-06-28 03:05:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:01,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:01,379 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 03:05:01,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:05:01,379 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 03:05:01,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1632887790, now seen corresponding path program 8 times [2024-06-28 03:05:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720694933] [2024-06-28 03:05:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:01,916 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 03:05:01,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:01,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720694933] [2024-06-28 03:05:01,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720694933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:01,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:01,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:05:01,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509509842] [2024-06-28 03:05:01,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:01,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:05:01,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:01,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:05:01,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:05:01,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:01,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 246 transitions, 2663 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:01,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:01,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:01,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:02,731 INFO L124 PetriNetUnfolderBase]: 2177/3541 cut-off events. [2024-06-28 03:05:02,731 INFO L125 PetriNetUnfolderBase]: For 178361/178363 co-relation queries the response was YES. [2024-06-28 03:05:02,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26533 conditions, 3541 events. 2177/3541 cut-off events. For 178361/178363 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 20162 event pairs, 513 based on Foata normal form. 4/3544 useless extension candidates. Maximal degree in co-relation 26443. Up to 3263 conditions per place. [2024-06-28 03:05:02,765 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 215 selfloop transitions, 50 changer transitions 0/270 dead transitions. [2024-06-28 03:05:02,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 270 transitions, 3307 flow [2024-06-28 03:05:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:05:02,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:05:02,767 INFO L175 Difference]: Start difference. First operand has 199 places, 246 transitions, 2663 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:05:02,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 270 transitions, 3307 flow [2024-06-28 03:05:02,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 270 transitions, 3162 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:02,954 INFO L231 Difference]: Finished difference. Result has 203 places, 249 transitions, 2672 flow [2024-06-28 03:05:02,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2672, PETRI_PLACES=203, PETRI_TRANSITIONS=249} [2024-06-28 03:05:02,955 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 161 predicate places. [2024-06-28 03:05:02,955 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 249 transitions, 2672 flow [2024-06-28 03:05:02,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:02,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:02,955 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 03:05:02,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:05:02,955 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 03:05:02,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:02,956 INFO L85 PathProgramCache]: Analyzing trace with hash -732743261, now seen corresponding path program 1 times [2024-06-28 03:05:02,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:02,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261141037] [2024-06-28 03:05:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:02,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261141037] [2024-06-28 03:05:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261141037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:03,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:03,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:03,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323016058] [2024-06-28 03:05:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:03,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:03,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:03,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:04,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:05:04,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 249 transitions, 2672 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:04,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:04,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:05:04,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:04,680 INFO L124 PetriNetUnfolderBase]: 2074/3441 cut-off events. [2024-06-28 03:05:04,680 INFO L125 PetriNetUnfolderBase]: For 184830/184830 co-relation queries the response was YES. [2024-06-28 03:05:04,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25991 conditions, 3441 events. 2074/3441 cut-off events. For 184830/184830 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 20104 event pairs, 501 based on Foata normal form. 3/3434 useless extension candidates. Maximal degree in co-relation 25900. Up to 3137 conditions per place. [2024-06-28 03:05:04,716 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 241 selfloop transitions, 18 changer transitions 0/269 dead transitions. [2024-06-28 03:05:04,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 269 transitions, 3316 flow [2024-06-28 03:05:04,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:05:04,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:05:04,717 INFO L175 Difference]: Start difference. First operand has 203 places, 249 transitions, 2672 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:05:04,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 269 transitions, 3316 flow [2024-06-28 03:05:04,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 269 transitions, 3181 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:04,945 INFO L231 Difference]: Finished difference. Result has 203 places, 252 transitions, 2643 flow [2024-06-28 03:05:04,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2643, PETRI_PLACES=203, PETRI_TRANSITIONS=252} [2024-06-28 03:05:04,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 161 predicate places. [2024-06-28 03:05:04,946 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 252 transitions, 2643 flow [2024-06-28 03:05:04,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:04,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:04,946 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 03:05:04,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:05:04,946 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:04,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash -170239787, now seen corresponding path program 2 times [2024-06-28 03:05:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:04,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146162299] [2024-06-28 03:05:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:04,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146162299] [2024-06-28 03:05:06,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146162299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:06,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:06,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498770435] [2024-06-28 03:05:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:06,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:05:06,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 252 transitions, 2643 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:06,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:06,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:05:06,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:07,145 INFO L124 PetriNetUnfolderBase]: 2079/3452 cut-off events. [2024-06-28 03:05:07,145 INFO L125 PetriNetUnfolderBase]: For 183626/183626 co-relation queries the response was YES. [2024-06-28 03:05:07,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26202 conditions, 3452 events. 2079/3452 cut-off events. For 183626/183626 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20205 event pairs, 498 based on Foata normal form. 1/3443 useless extension candidates. Maximal degree in co-relation 26111. Up to 3147 conditions per place. [2024-06-28 03:05:07,175 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 240 selfloop transitions, 19 changer transitions 0/269 dead transitions. [2024-06-28 03:05:07,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 269 transitions, 3281 flow [2024-06-28 03:05:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:05:07,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:05:07,177 INFO L175 Difference]: Start difference. First operand has 203 places, 252 transitions, 2643 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:05:07,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 269 transitions, 3281 flow [2024-06-28 03:05:07,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 269 transitions, 3203 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:07,344 INFO L231 Difference]: Finished difference. Result has 205 places, 255 transitions, 2677 flow [2024-06-28 03:05:07,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2677, PETRI_PLACES=205, PETRI_TRANSITIONS=255} [2024-06-28 03:05:07,345 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-28 03:05:07,345 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 255 transitions, 2677 flow [2024-06-28 03:05:07,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:07,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:07,345 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 03:05:07,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:05:07,346 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 03:05:07,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1001658891, now seen corresponding path program 3 times [2024-06-28 03:05:07,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161849027] [2024-06-28 03:05:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:07,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:08,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:08,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161849027] [2024-06-28 03:05:08,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161849027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:08,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:08,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900028608] [2024-06-28 03:05:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:08,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:08,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:08,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:05:08,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 255 transitions, 2677 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:08,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:08,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:05:08,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:09,180 INFO L124 PetriNetUnfolderBase]: 2097/3484 cut-off events. [2024-06-28 03:05:09,180 INFO L125 PetriNetUnfolderBase]: For 194361/194363 co-relation queries the response was YES. [2024-06-28 03:05:09,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26865 conditions, 3484 events. 2097/3484 cut-off events. For 194361/194363 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 20449 event pairs, 498 based on Foata normal form. 4/3478 useless extension candidates. Maximal degree in co-relation 26773. Up to 3104 conditions per place. [2024-06-28 03:05:09,215 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 225 selfloop transitions, 45 changer transitions 0/280 dead transitions. [2024-06-28 03:05:09,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 280 transitions, 3701 flow [2024-06-28 03:05:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:05:09,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 03:05:09,216 INFO L175 Difference]: Start difference. First operand has 205 places, 255 transitions, 2677 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:05:09,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 280 transitions, 3701 flow [2024-06-28 03:05:09,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 280 transitions, 3611 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:09,408 INFO L231 Difference]: Finished difference. Result has 207 places, 265 transitions, 2908 flow [2024-06-28 03:05:09,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2908, PETRI_PLACES=207, PETRI_TRANSITIONS=265} [2024-06-28 03:05:09,408 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-28 03:05:09,408 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 265 transitions, 2908 flow [2024-06-28 03:05:09,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:09,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:09,409 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 03:05:09,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:05:09,409 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:09,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 994307241, now seen corresponding path program 4 times [2024-06-28 03:05:09,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:09,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353986751] [2024-06-28 03:05:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353986751] [2024-06-28 03:05:10,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353986751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:10,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:10,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:10,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086073859] [2024-06-28 03:05:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:10,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:10,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:05:10,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 265 transitions, 2908 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:10,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:10,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:05:10,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:11,181 INFO L124 PetriNetUnfolderBase]: 2124/3524 cut-off events. [2024-06-28 03:05:11,181 INFO L125 PetriNetUnfolderBase]: For 205649/205651 co-relation queries the response was YES. [2024-06-28 03:05:11,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27822 conditions, 3524 events. 2124/3524 cut-off events. For 205649/205651 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20642 event pairs, 499 based on Foata normal form. 4/3519 useless extension candidates. Maximal degree in co-relation 27729. Up to 3185 conditions per place. [2024-06-28 03:05:11,216 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 248 selfloop transitions, 31 changer transitions 0/289 dead transitions. [2024-06-28 03:05:11,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 289 transitions, 3856 flow [2024-06-28 03:05:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:05:11,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:05:11,218 INFO L175 Difference]: Start difference. First operand has 207 places, 265 transitions, 2908 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:05:11,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 289 transitions, 3856 flow [2024-06-28 03:05:11,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 289 transitions, 3735 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-28 03:05:11,470 INFO L231 Difference]: Finished difference. Result has 213 places, 276 transitions, 3115 flow [2024-06-28 03:05:11,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3115, PETRI_PLACES=213, PETRI_TRANSITIONS=276} [2024-06-28 03:05:11,470 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-28 03:05:11,470 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 276 transitions, 3115 flow [2024-06-28 03:05:11,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:11,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:11,471 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 03:05:11,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:05:11,471 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:11,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1001935938, now seen corresponding path program 1 times [2024-06-28 03:05:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345211414] [2024-06-28 03:05:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:12,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:12,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345211414] [2024-06-28 03:05:12,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345211414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:12,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:12,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:05:12,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396286663] [2024-06-28 03:05:12,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:12,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:05:12,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:05:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:05:12,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:05:12,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 276 transitions, 3115 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:12,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:12,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:05:12,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:13,422 INFO L124 PetriNetUnfolderBase]: 2064/3415 cut-off events. [2024-06-28 03:05:13,422 INFO L125 PetriNetUnfolderBase]: For 208005/208043 co-relation queries the response was YES. [2024-06-28 03:05:13,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27256 conditions, 3415 events. 2064/3415 cut-off events. For 208005/208043 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19921 event pairs, 498 based on Foata normal form. 18/3400 useless extension candidates. Maximal degree in co-relation 27160. Up to 3083 conditions per place. [2024-06-28 03:05:13,454 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 235 selfloop transitions, 19 changer transitions 0/289 dead transitions. [2024-06-28 03:05:13,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 289 transitions, 3711 flow [2024-06-28 03:05:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:05:13,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:05:13,456 INFO L175 Difference]: Start difference. First operand has 213 places, 276 transitions, 3115 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:05:13,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 289 transitions, 3711 flow [2024-06-28 03:05:13,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 289 transitions, 3622 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:13,714 INFO L231 Difference]: Finished difference. Result has 217 places, 278 transitions, 3129 flow [2024-06-28 03:05:13,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3129, PETRI_PLACES=217, PETRI_TRANSITIONS=278} [2024-06-28 03:05:13,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-06-28 03:05:13,715 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 278 transitions, 3129 flow [2024-06-28 03:05:13,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:13,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:13,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:13,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:05:13,715 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:13,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1099437638, now seen corresponding path program 1 times [2024-06-28 03:05:13,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:13,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975105298] [2024-06-28 03:05:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:13,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:14,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:14,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975105298] [2024-06-28 03:05:14,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975105298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:14,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:14,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:05:14,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525845062] [2024-06-28 03:05:14,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:14,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:05:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:05:14,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:05:14,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:14,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 278 transitions, 3129 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:14,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:14,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:14,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:15,382 INFO L124 PetriNetUnfolderBase]: 2255/3668 cut-off events. [2024-06-28 03:05:15,383 INFO L125 PetriNetUnfolderBase]: For 215358/215358 co-relation queries the response was YES. [2024-06-28 03:05:15,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28881 conditions, 3668 events. 2255/3668 cut-off events. For 215358/215358 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20999 event pairs, 510 based on Foata normal form. 2/3669 useless extension candidates. Maximal degree in co-relation 28783. Up to 3372 conditions per place. [2024-06-28 03:05:15,417 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 267 selfloop transitions, 34 changer transitions 0/306 dead transitions. [2024-06-28 03:05:15,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 306 transitions, 3913 flow [2024-06-28 03:05:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:05:15,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 03:05:15,418 INFO L175 Difference]: Start difference. First operand has 217 places, 278 transitions, 3129 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:05:15,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 306 transitions, 3913 flow [2024-06-28 03:05:15,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 306 transitions, 3826 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:15,631 INFO L231 Difference]: Finished difference. Result has 220 places, 282 transitions, 3217 flow [2024-06-28 03:05:15,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3217, PETRI_PLACES=220, PETRI_TRANSITIONS=282} [2024-06-28 03:05:15,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 178 predicate places. [2024-06-28 03:05:15,632 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 282 transitions, 3217 flow [2024-06-28 03:05:15,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:15,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:15,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:15,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:05:15,633 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:15,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1499781400, now seen corresponding path program 2 times [2024-06-28 03:05:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319565617] [2024-06-28 03:05:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:15,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:16,262 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 03:05:16,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:16,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319565617] [2024-06-28 03:05:16,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319565617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:16,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:16,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:16,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138505496] [2024-06-28 03:05:16,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:16,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:16,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:16,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:16,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:16,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 282 transitions, 3217 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:16,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:16,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:16,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:17,105 INFO L124 PetriNetUnfolderBase]: 2270/3693 cut-off events. [2024-06-28 03:05:17,105 INFO L125 PetriNetUnfolderBase]: For 225620/225620 co-relation queries the response was YES. [2024-06-28 03:05:17,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29613 conditions, 3693 events. 2270/3693 cut-off events. For 225620/225620 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21191 event pairs, 512 based on Foata normal form. 2/3694 useless extension candidates. Maximal degree in co-relation 29513. Up to 3380 conditions per place. [2024-06-28 03:05:17,138 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 269 selfloop transitions, 40 changer transitions 0/314 dead transitions. [2024-06-28 03:05:17,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 314 transitions, 4055 flow [2024-06-28 03:05:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:05:17,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:05:17,140 INFO L175 Difference]: Start difference. First operand has 220 places, 282 transitions, 3217 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:05:17,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 314 transitions, 4055 flow [2024-06-28 03:05:17,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 314 transitions, 3932 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 03:05:17,383 INFO L231 Difference]: Finished difference. Result has 225 places, 288 transitions, 3309 flow [2024-06-28 03:05:17,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3309, PETRI_PLACES=225, PETRI_TRANSITIONS=288} [2024-06-28 03:05:17,384 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-06-28 03:05:17,384 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 288 transitions, 3309 flow [2024-06-28 03:05:17,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:17,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:17,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:17,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:05:17,385 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:17,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1260339352, now seen corresponding path program 3 times [2024-06-28 03:05:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215367382] [2024-06-28 03:05:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:18,075 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 03:05:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215367382] [2024-06-28 03:05:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215367382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:18,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:18,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:05:18,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118529064] [2024-06-28 03:05:18,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:18,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:05:18,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:05:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:05:18,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:18,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 288 transitions, 3309 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:18,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:18,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:18,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:18,969 INFO L124 PetriNetUnfolderBase]: 2280/3710 cut-off events. [2024-06-28 03:05:18,969 INFO L125 PetriNetUnfolderBase]: For 236682/236684 co-relation queries the response was YES. [2024-06-28 03:05:18,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30251 conditions, 3710 events. 2280/3710 cut-off events. For 236682/236684 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21332 event pairs, 519 based on Foata normal form. 4/3713 useless extension candidates. Maximal degree in co-relation 30149. Up to 3327 conditions per place. [2024-06-28 03:05:19,011 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 252 selfloop transitions, 57 changer transitions 0/314 dead transitions. [2024-06-28 03:05:19,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 314 transitions, 4114 flow [2024-06-28 03:05:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:05:19,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:05:19,012 INFO L175 Difference]: Start difference. First operand has 225 places, 288 transitions, 3309 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:05:19,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 314 transitions, 4114 flow [2024-06-28 03:05:19,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 314 transitions, 3973 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:19,323 INFO L231 Difference]: Finished difference. Result has 227 places, 291 transitions, 3382 flow [2024-06-28 03:05:19,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3168, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3382, PETRI_PLACES=227, PETRI_TRANSITIONS=291} [2024-06-28 03:05:19,324 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-28 03:05:19,324 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 291 transitions, 3382 flow [2024-06-28 03:05:19,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:19,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:19,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:19,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:05:19,324 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:19,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1260160606, now seen corresponding path program 1 times [2024-06-28 03:05:19,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:19,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656275326] [2024-06-28 03:05:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:19,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:20,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:20,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656275326] [2024-06-28 03:05:20,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656275326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:20,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:20,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:20,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607552929] [2024-06-28 03:05:20,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:20,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:20,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:20,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:20,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:20,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:20,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 291 transitions, 3382 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:20,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:20,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:20,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:21,139 INFO L124 PetriNetUnfolderBase]: 2296/3737 cut-off events. [2024-06-28 03:05:21,139 INFO L125 PetriNetUnfolderBase]: For 245937/245937 co-relation queries the response was YES. [2024-06-28 03:05:21,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30901 conditions, 3737 events. 2296/3737 cut-off events. For 245937/245937 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21532 event pairs, 525 based on Foata normal form. 1/3735 useless extension candidates. Maximal degree in co-relation 30798. Up to 3388 conditions per place. [2024-06-28 03:05:21,173 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 260 selfloop transitions, 52 changer transitions 0/317 dead transitions. [2024-06-28 03:05:21,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 317 transitions, 4188 flow [2024-06-28 03:05:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:05:21,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:05:21,175 INFO L175 Difference]: Start difference. First operand has 227 places, 291 transitions, 3382 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:05:21,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 317 transitions, 4188 flow [2024-06-28 03:05:21,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 317 transitions, 3980 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:21,413 INFO L231 Difference]: Finished difference. Result has 229 places, 297 transitions, 3397 flow [2024-06-28 03:05:21,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3174, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3397, PETRI_PLACES=229, PETRI_TRANSITIONS=297} [2024-06-28 03:05:21,414 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-28 03:05:21,414 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 297 transitions, 3397 flow [2024-06-28 03:05:21,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:21,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:21,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:21,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:05:21,415 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:21,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1260040822, now seen corresponding path program 4 times [2024-06-28 03:05:21,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:21,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266981426] [2024-06-28 03:05:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:22,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266981426] [2024-06-28 03:05:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266981426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:22,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:05:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148407811] [2024-06-28 03:05:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:22,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:05:22,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:05:22,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:05:22,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:22,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 297 transitions, 3397 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:22,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:22,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:22,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:23,072 INFO L124 PetriNetUnfolderBase]: 2306/3756 cut-off events. [2024-06-28 03:05:23,073 INFO L125 PetriNetUnfolderBase]: For 257097/257099 co-relation queries the response was YES. [2024-06-28 03:05:23,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31310 conditions, 3756 events. 2306/3756 cut-off events. For 257097/257099 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21671 event pairs, 553 based on Foata normal form. 4/3759 useless extension candidates. Maximal degree in co-relation 31208. Up to 3310 conditions per place. [2024-06-28 03:05:23,113 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 246 selfloop transitions, 70 changer transitions 0/321 dead transitions. [2024-06-28 03:05:23,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 321 transitions, 4226 flow [2024-06-28 03:05:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:05:23,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 03:05:23,114 INFO L175 Difference]: Start difference. First operand has 229 places, 297 transitions, 3397 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:05:23,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 321 transitions, 4226 flow [2024-06-28 03:05:23,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 321 transitions, 4074 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 03:05:23,365 INFO L231 Difference]: Finished difference. Result has 232 places, 300 transitions, 3498 flow [2024-06-28 03:05:23,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3498, PETRI_PLACES=232, PETRI_TRANSITIONS=300} [2024-06-28 03:05:23,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 190 predicate places. [2024-06-28 03:05:23,366 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 300 transitions, 3498 flow [2024-06-28 03:05:23,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:23,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:23,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:23,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:05:23,366 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:23,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:23,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1190360334, now seen corresponding path program 1 times [2024-06-28 03:05:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:23,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868405045] [2024-06-28 03:05:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:23,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:24,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868405045] [2024-06-28 03:05:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868405045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139998902] [2024-06-28 03:05:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:24,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:24,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:24,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 300 transitions, 3498 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:24,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:24,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:24,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:25,031 INFO L124 PetriNetUnfolderBase]: 2316/3772 cut-off events. [2024-06-28 03:05:25,031 INFO L125 PetriNetUnfolderBase]: For 270402/270404 co-relation queries the response was YES. [2024-06-28 03:05:25,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31973 conditions, 3772 events. 2316/3772 cut-off events. For 270402/270404 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 21825 event pairs, 548 based on Foata normal form. 4/3775 useless extension candidates. Maximal degree in co-relation 31870. Up to 3432 conditions per place. [2024-06-28 03:05:25,073 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 263 selfloop transitions, 55 changer transitions 0/323 dead transitions. [2024-06-28 03:05:25,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 323 transitions, 4293 flow [2024-06-28 03:05:25,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:05:25,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:05:25,074 INFO L175 Difference]: Start difference. First operand has 232 places, 300 transitions, 3498 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:05:25,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 323 transitions, 4293 flow [2024-06-28 03:05:25,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 323 transitions, 4072 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:25,403 INFO L231 Difference]: Finished difference. Result has 234 places, 304 transitions, 3487 flow [2024-06-28 03:05:25,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3487, PETRI_PLACES=234, PETRI_TRANSITIONS=304} [2024-06-28 03:05:25,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-28 03:05:25,404 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 304 transitions, 3487 flow [2024-06-28 03:05:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:25,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:25,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:25,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:05:25,404 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 03:05:25,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash -917538566, now seen corresponding path program 2 times [2024-06-28 03:05:25,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:25,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137095881] [2024-06-28 03:05:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:25,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:26,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137095881] [2024-06-28 03:05:26,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137095881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:26,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:26,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:26,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44018999] [2024-06-28 03:05:26,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:26,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:26,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:26,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:26,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:26,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:26,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 304 transitions, 3487 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:26,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:26,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:26,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:26,896 INFO L124 PetriNetUnfolderBase]: 2326/3785 cut-off events. [2024-06-28 03:05:26,896 INFO L125 PetriNetUnfolderBase]: For 280100/280102 co-relation queries the response was YES. [2024-06-28 03:05:26,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32547 conditions, 3785 events. 2326/3785 cut-off events. For 280100/280102 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21874 event pairs, 553 based on Foata normal form. 4/3788 useless extension candidates. Maximal degree in co-relation 32443. Up to 3437 conditions per place. [2024-06-28 03:05:26,937 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 259 selfloop transitions, 61 changer transitions 0/325 dead transitions. [2024-06-28 03:05:26,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 325 transitions, 4299 flow [2024-06-28 03:05:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:05:26,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:05:26,939 INFO L175 Difference]: Start difference. First operand has 234 places, 304 transitions, 3487 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:05:26,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 325 transitions, 4299 flow [2024-06-28 03:05:27,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 325 transitions, 4123 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:27,281 INFO L231 Difference]: Finished difference. Result has 236 places, 308 transitions, 3538 flow [2024-06-28 03:05:27,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3311, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3538, PETRI_PLACES=236, PETRI_TRANSITIONS=308} [2024-06-28 03:05:27,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-28 03:05:27,282 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 308 transitions, 3538 flow [2024-06-28 03:05:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:27,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:27,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:27,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:05:27,282 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 03:05:27,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1367491482, now seen corresponding path program 5 times [2024-06-28 03:05:27,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:27,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162473213] [2024-06-28 03:05:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:27,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:27,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162473213] [2024-06-28 03:05:27,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162473213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:27,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:27,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:27,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402381036] [2024-06-28 03:05:27,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:27,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:27,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:27,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:27,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:28,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:28,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 308 transitions, 3538 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:28,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:28,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:28,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:28,755 INFO L124 PetriNetUnfolderBase]: 2368/3851 cut-off events. [2024-06-28 03:05:28,755 INFO L125 PetriNetUnfolderBase]: For 301222/301224 co-relation queries the response was YES. [2024-06-28 03:05:28,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34172 conditions, 3851 events. 2368/3851 cut-off events. For 301222/301224 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22275 event pairs, 564 based on Foata normal form. 4/3854 useless extension candidates. Maximal degree in co-relation 34067. Up to 3329 conditions per place. [2024-06-28 03:05:28,798 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 247 selfloop transitions, 85 changer transitions 0/337 dead transitions. [2024-06-28 03:05:28,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 337 transitions, 4870 flow [2024-06-28 03:05:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:05:28,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:05:28,800 INFO L175 Difference]: Start difference. First operand has 236 places, 308 transitions, 3538 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:05:28,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 337 transitions, 4870 flow [2024-06-28 03:05:29,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 337 transitions, 4671 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:29,138 INFO L231 Difference]: Finished difference. Result has 238 places, 317 transitions, 3845 flow [2024-06-28 03:05:29,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3339, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3845, PETRI_PLACES=238, PETRI_TRANSITIONS=317} [2024-06-28 03:05:29,139 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 196 predicate places. [2024-06-28 03:05:29,139 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 317 transitions, 3845 flow [2024-06-28 03:05:29,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:29,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:29,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:29,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:05:29,140 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 03:05:29,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash -917301416, now seen corresponding path program 3 times [2024-06-28 03:05:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:29,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950774765] [2024-06-28 03:05:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:29,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950774765] [2024-06-28 03:05:29,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950774765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:29,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:29,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:29,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366369039] [2024-06-28 03:05:29,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:29,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:29,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:29,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:29,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:29,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:29,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 317 transitions, 3845 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:29,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:29,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:29,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:30,764 INFO L124 PetriNetUnfolderBase]: 2389/3882 cut-off events. [2024-06-28 03:05:30,764 INFO L125 PetriNetUnfolderBase]: For 317433/317435 co-relation queries the response was YES. [2024-06-28 03:05:30,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35092 conditions, 3882 events. 2389/3882 cut-off events. For 317433/317435 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 22503 event pairs, 555 based on Foata normal form. 3/3884 useless extension candidates. Maximal degree in co-relation 34986. Up to 3492 conditions per place. [2024-06-28 03:05:30,806 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 265 selfloop transitions, 73 changer transitions 0/343 dead transitions. [2024-06-28 03:05:30,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 343 transitions, 4878 flow [2024-06-28 03:05:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:30,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:05:30,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:05:30,807 INFO L175 Difference]: Start difference. First operand has 238 places, 317 transitions, 3845 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:05:30,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 343 transitions, 4878 flow [2024-06-28 03:05:31,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 343 transitions, 4717 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 03:05:31,115 INFO L231 Difference]: Finished difference. Result has 244 places, 326 transitions, 4038 flow [2024-06-28 03:05:31,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3684, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4038, PETRI_PLACES=244, PETRI_TRANSITIONS=326} [2024-06-28 03:05:31,116 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-28 03:05:31,116 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 326 transitions, 4038 flow [2024-06-28 03:05:31,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:31,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:31,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:31,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:05:31,117 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:31,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:31,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1083029272, now seen corresponding path program 6 times [2024-06-28 03:05:31,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:31,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666049741] [2024-06-28 03:05:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:31,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:31,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:31,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666049741] [2024-06-28 03:05:31,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666049741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:31,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:31,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:31,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842046462] [2024-06-28 03:05:31,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:31,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:31,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:31,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:31,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 326 transitions, 4038 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:31,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:31,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:31,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:32,781 INFO L124 PetriNetUnfolderBase]: 2428/3938 cut-off events. [2024-06-28 03:05:32,782 INFO L125 PetriNetUnfolderBase]: For 333358/333358 co-relation queries the response was YES. [2024-06-28 03:05:32,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36443 conditions, 3938 events. 2428/3938 cut-off events. For 333358/333358 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22769 event pairs, 561 based on Foata normal form. 2/3939 useless extension candidates. Maximal degree in co-relation 36334. Up to 3620 conditions per place. [2024-06-28 03:05:32,826 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 311 selfloop transitions, 42 changer transitions 0/358 dead transitions. [2024-06-28 03:05:32,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 358 transitions, 5104 flow [2024-06-28 03:05:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:05:32,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:05:32,828 INFO L175 Difference]: Start difference. First operand has 244 places, 326 transitions, 4038 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:05:32,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 358 transitions, 5104 flow [2024-06-28 03:05:33,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 358 transitions, 4962 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:33,255 INFO L231 Difference]: Finished difference. Result has 251 places, 344 transitions, 4323 flow [2024-06-28 03:05:33,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3898, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4323, PETRI_PLACES=251, PETRI_TRANSITIONS=344} [2024-06-28 03:05:33,256 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 209 predicate places. [2024-06-28 03:05:33,256 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 344 transitions, 4323 flow [2024-06-28 03:05:33,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:33,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:33,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:33,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:05:33,257 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:33,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1378490458, now seen corresponding path program 1 times [2024-06-28 03:05:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534407999] [2024-06-28 03:05:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:33,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:33,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534407999] [2024-06-28 03:05:33,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534407999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:33,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:33,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:33,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030354310] [2024-06-28 03:05:33,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:33,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:33,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:33,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:33,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 344 transitions, 4323 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:33,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:33,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:33,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:34,758 INFO L124 PetriNetUnfolderBase]: 2436/3953 cut-off events. [2024-06-28 03:05:34,758 INFO L125 PetriNetUnfolderBase]: For 342811/342815 co-relation queries the response was YES. [2024-06-28 03:05:34,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36792 conditions, 3953 events. 2436/3953 cut-off events. For 342811/342815 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 22923 event pairs, 441 based on Foata normal form. 6/3958 useless extension candidates. Maximal degree in co-relation 36679. Up to 3597 conditions per place. [2024-06-28 03:05:34,807 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 330 selfloop transitions, 36 changer transitions 0/371 dead transitions. [2024-06-28 03:05:34,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 371 transitions, 5207 flow [2024-06-28 03:05:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:05:34,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:05:34,808 INFO L175 Difference]: Start difference. First operand has 251 places, 344 transitions, 4323 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:05:34,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 371 transitions, 5207 flow [2024-06-28 03:05:35,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 371 transitions, 5030 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 03:05:35,250 INFO L231 Difference]: Finished difference. Result has 254 places, 346 transitions, 4291 flow [2024-06-28 03:05:35,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4146, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4291, PETRI_PLACES=254, PETRI_TRANSITIONS=346} [2024-06-28 03:05:35,251 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-06-28 03:05:35,251 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 346 transitions, 4291 flow [2024-06-28 03:05:35,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:35,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:35,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:35,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:05:35,252 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:35,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1958310292, now seen corresponding path program 2 times [2024-06-28 03:05:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:35,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50813418] [2024-06-28 03:05:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:35,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:35,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:35,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50813418] [2024-06-28 03:05:35,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50813418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:35,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:35,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:05:35,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313714632] [2024-06-28 03:05:35,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:35,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:05:35,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:35,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:05:35,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:05:36,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:36,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 346 transitions, 4291 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:36,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:36,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:36,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:36,861 INFO L124 PetriNetUnfolderBase]: 2444/3965 cut-off events. [2024-06-28 03:05:36,862 INFO L125 PetriNetUnfolderBase]: For 350843/350847 co-relation queries the response was YES. [2024-06-28 03:05:36,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37039 conditions, 3965 events. 2444/3965 cut-off events. For 350843/350847 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23013 event pairs, 550 based on Foata normal form. 6/3970 useless extension candidates. Maximal degree in co-relation 36926. Up to 3645 conditions per place. [2024-06-28 03:05:36,908 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 324 selfloop transitions, 40 changer transitions 0/369 dead transitions. [2024-06-28 03:05:36,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 369 transitions, 5159 flow [2024-06-28 03:05:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:36,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:05:36,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:05:36,915 INFO L175 Difference]: Start difference. First operand has 254 places, 346 transitions, 4291 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:05:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 369 transitions, 5159 flow [2024-06-28 03:05:37,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 369 transitions, 5030 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:37,405 INFO L231 Difference]: Finished difference. Result has 256 places, 348 transitions, 4320 flow [2024-06-28 03:05:37,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4162, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4320, PETRI_PLACES=256, PETRI_TRANSITIONS=348} [2024-06-28 03:05:37,405 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-06-28 03:05:37,406 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 348 transitions, 4320 flow [2024-06-28 03:05:37,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:37,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:37,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:37,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:05:37,406 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:37,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:37,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1786943898, now seen corresponding path program 3 times [2024-06-28 03:05:37,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:37,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884840345] [2024-06-28 03:05:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:37,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:38,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:38,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884840345] [2024-06-28 03:05:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884840345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:38,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:38,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:05:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435987040] [2024-06-28 03:05:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:05:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:38,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:05:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:05:38,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:38,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 348 transitions, 4320 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:38,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:38,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:38,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:39,138 INFO L124 PetriNetUnfolderBase]: 2452/3973 cut-off events. [2024-06-28 03:05:39,139 INFO L125 PetriNetUnfolderBase]: For 362003/362003 co-relation queries the response was YES. [2024-06-28 03:05:39,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37339 conditions, 3973 events. 2452/3973 cut-off events. For 362003/362003 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 22961 event pairs, 557 based on Foata normal form. 2/3974 useless extension candidates. Maximal degree in co-relation 37225. Up to 3643 conditions per place. [2024-06-28 03:05:39,186 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 313 selfloop transitions, 48 changer transitions 0/366 dead transitions. [2024-06-28 03:05:39,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 366 transitions, 5166 flow [2024-06-28 03:05:39,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 03:05:39,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:05:39,187 INFO L175 Difference]: Start difference. First operand has 256 places, 348 transitions, 4320 flow. Second operand 8 states and 140 transitions. [2024-06-28 03:05:39,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 366 transitions, 5166 flow [2024-06-28 03:05:39,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 366 transitions, 5021 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:39,634 INFO L231 Difference]: Finished difference. Result has 258 places, 350 transitions, 4353 flow [2024-06-28 03:05:39,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4353, PETRI_PLACES=258, PETRI_TRANSITIONS=350} [2024-06-28 03:05:39,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-28 03:05:39,635 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 350 transitions, 4353 flow [2024-06-28 03:05:39,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:39,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:39,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:39,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:05:39,635 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:39,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1687406720, now seen corresponding path program 2 times [2024-06-28 03:05:39,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:39,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250564900] [2024-06-28 03:05:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:39,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:40,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:40,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250564900] [2024-06-28 03:05:40,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250564900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:40,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:40,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:40,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273494376] [2024-06-28 03:05:40,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:40,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:40,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:40,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:40,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 350 transitions, 4353 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:40,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:40,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:40,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:41,452 INFO L124 PetriNetUnfolderBase]: 2457/3985 cut-off events. [2024-06-28 03:05:41,452 INFO L125 PetriNetUnfolderBase]: For 369374/369380 co-relation queries the response was YES. [2024-06-28 03:05:41,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37607 conditions, 3985 events. 2457/3985 cut-off events. For 369374/369380 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23135 event pairs, 553 based on Foata normal form. 7/3991 useless extension candidates. Maximal degree in co-relation 37492. Up to 3615 conditions per place. [2024-06-28 03:05:41,498 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 312 selfloop transitions, 55 changer transitions 0/372 dead transitions. [2024-06-28 03:05:41,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 372 transitions, 5273 flow [2024-06-28 03:05:41,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:05:41,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:05:41,502 INFO L175 Difference]: Start difference. First operand has 258 places, 350 transitions, 4353 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:05:41,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 372 transitions, 5273 flow [2024-06-28 03:05:41,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 372 transitions, 5028 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:41,993 INFO L231 Difference]: Finished difference. Result has 258 places, 353 transitions, 4344 flow [2024-06-28 03:05:41,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4344, PETRI_PLACES=258, PETRI_TRANSITIONS=353} [2024-06-28 03:05:41,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-28 03:05:41,994 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 353 transitions, 4344 flow [2024-06-28 03:05:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:41,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:41,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:41,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:05:41,994 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:41,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1097942984, now seen corresponding path program 3 times [2024-06-28 03:05:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445465399] [2024-06-28 03:05:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:42,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445465399] [2024-06-28 03:05:42,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445465399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:42,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554276508] [2024-06-28 03:05:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:42,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:42,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:42,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 353 transitions, 4344 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:42,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:42,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:42,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:43,760 INFO L124 PetriNetUnfolderBase]: 2462/3994 cut-off events. [2024-06-28 03:05:43,760 INFO L125 PetriNetUnfolderBase]: For 381491/381497 co-relation queries the response was YES. [2024-06-28 03:05:43,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37955 conditions, 3994 events. 2462/3994 cut-off events. For 381491/381497 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23151 event pairs, 553 based on Foata normal form. 7/4000 useless extension candidates. Maximal degree in co-relation 37842. Up to 3607 conditions per place. [2024-06-28 03:05:43,805 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 305 selfloop transitions, 66 changer transitions 0/376 dead transitions. [2024-06-28 03:05:43,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 376 transitions, 5518 flow [2024-06-28 03:05:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:05:43,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 03:05:43,815 INFO L175 Difference]: Start difference. First operand has 258 places, 353 transitions, 4344 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:05:43,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 376 transitions, 5518 flow [2024-06-28 03:05:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 376 transitions, 5304 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:44,273 INFO L231 Difference]: Finished difference. Result has 260 places, 359 transitions, 4514 flow [2024-06-28 03:05:44,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4514, PETRI_PLACES=260, PETRI_TRANSITIONS=359} [2024-06-28 03:05:44,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-28 03:05:44,274 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 359 transitions, 4514 flow [2024-06-28 03:05:44,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:44,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:44,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:44,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:05:44,274 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:44,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1094700218, now seen corresponding path program 7 times [2024-06-28 03:05:44,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:44,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496058717] [2024-06-28 03:05:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:45,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:45,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496058717] [2024-06-28 03:05:45,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496058717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:45,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:45,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:05:45,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717865479] [2024-06-28 03:05:45,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:45,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:05:45,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:45,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:05:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:05:45,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:45,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 359 transitions, 4514 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:45,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:45,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:45,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:46,044 INFO L124 PetriNetUnfolderBase]: 2472/4007 cut-off events. [2024-06-28 03:05:46,044 INFO L125 PetriNetUnfolderBase]: For 398190/398190 co-relation queries the response was YES. [2024-06-28 03:05:46,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38529 conditions, 4007 events. 2472/4007 cut-off events. For 398190/398190 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 23183 event pairs, 567 based on Foata normal form. 2/4008 useless extension candidates. Maximal degree in co-relation 38415. Up to 3588 conditions per place. [2024-06-28 03:05:46,089 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 318 selfloop transitions, 59 changer transitions 0/382 dead transitions. [2024-06-28 03:05:46,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 382 transitions, 5467 flow [2024-06-28 03:05:46,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:05:46,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:05:46,090 INFO L175 Difference]: Start difference. First operand has 260 places, 359 transitions, 4514 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:05:46,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 382 transitions, 5467 flow [2024-06-28 03:05:46,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 382 transitions, 5265 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:46,556 INFO L231 Difference]: Finished difference. Result has 264 places, 362 transitions, 4548 flow [2024-06-28 03:05:46,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4548, PETRI_PLACES=264, PETRI_TRANSITIONS=362} [2024-06-28 03:05:46,557 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-06-28 03:05:46,557 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 362 transitions, 4548 flow [2024-06-28 03:05:46,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:46,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:46,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:46,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:05:46,557 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:46,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1459505570, now seen corresponding path program 4 times [2024-06-28 03:05:46,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:46,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696009419] [2024-06-28 03:05:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:46,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:47,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:47,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696009419] [2024-06-28 03:05:47,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696009419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:47,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:47,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564080585] [2024-06-28 03:05:47,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:47,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:47,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:47,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:47,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:47,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 362 transitions, 4548 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:47,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:47,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:48,300 INFO L124 PetriNetUnfolderBase]: 2477/4017 cut-off events. [2024-06-28 03:05:48,300 INFO L125 PetriNetUnfolderBase]: For 405000/405006 co-relation queries the response was YES. [2024-06-28 03:05:48,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38813 conditions, 4017 events. 2477/4017 cut-off events. For 405000/405006 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 23345 event pairs, 555 based on Foata normal form. 7/4023 useless extension candidates. Maximal degree in co-relation 38697. Up to 3643 conditions per place. [2024-06-28 03:05:48,347 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 330 selfloop transitions, 50 changer transitions 0/385 dead transitions. [2024-06-28 03:05:48,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 385 transitions, 5489 flow [2024-06-28 03:05:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:05:48,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:05:48,349 INFO L175 Difference]: Start difference. First operand has 264 places, 362 transitions, 4548 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:05:48,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 385 transitions, 5489 flow [2024-06-28 03:05:48,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 385 transitions, 5199 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-28 03:05:48,866 INFO L231 Difference]: Finished difference. Result has 263 places, 365 transitions, 4472 flow [2024-06-28 03:05:48,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4258, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4472, PETRI_PLACES=263, PETRI_TRANSITIONS=365} [2024-06-28 03:05:48,876 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-06-28 03:05:48,876 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 365 transitions, 4472 flow [2024-06-28 03:05:48,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:48,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:48,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:48,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:05:48,877 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 03:05:48,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1801924316, now seen corresponding path program 4 times [2024-06-28 03:05:48,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:48,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183057446] [2024-06-28 03:05:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:48,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:49,598 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 03:05:49,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:49,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183057446] [2024-06-28 03:05:49,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183057446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:49,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:49,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:49,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594641089] [2024-06-28 03:05:49,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:49,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:49,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:49,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:49,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 365 transitions, 4472 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:49,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:49,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:49,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:50,508 INFO L124 PetriNetUnfolderBase]: 2471/4009 cut-off events. [2024-06-28 03:05:50,508 INFO L125 PetriNetUnfolderBase]: For 409506/409512 co-relation queries the response was YES. [2024-06-28 03:05:50,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38489 conditions, 4009 events. 2471/4009 cut-off events. For 409506/409512 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 23344 event pairs, 553 based on Foata normal form. 8/4016 useless extension candidates. Maximal degree in co-relation 38373. Up to 3681 conditions per place. [2024-06-28 03:05:50,555 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 333 selfloop transitions, 45 changer transitions 0/383 dead transitions. [2024-06-28 03:05:50,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 383 transitions, 5330 flow [2024-06-28 03:05:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:50,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:50,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:05:50,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:05:50,556 INFO L175 Difference]: Start difference. First operand has 263 places, 365 transitions, 4472 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:05:50,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 383 transitions, 5330 flow [2024-06-28 03:05:51,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 383 transitions, 5082 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:51,048 INFO L231 Difference]: Finished difference. Result has 265 places, 366 transitions, 4346 flow [2024-06-28 03:05:51,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4238, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4346, PETRI_PLACES=265, PETRI_TRANSITIONS=366} [2024-06-28 03:05:51,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 03:05:51,049 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 366 transitions, 4346 flow [2024-06-28 03:05:51,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:51,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:51,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:51,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:05:51,049 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 03:05:51,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:51,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1337152190, now seen corresponding path program 8 times [2024-06-28 03:05:51,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:51,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321075533] [2024-06-28 03:05:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:51,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:51,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:51,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321075533] [2024-06-28 03:05:51,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321075533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:51,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:51,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:05:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418012169] [2024-06-28 03:05:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:51,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:05:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:05:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:05:51,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:51,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 366 transitions, 4346 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:51,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:51,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:51,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:52,736 INFO L124 PetriNetUnfolderBase]: 2465/3998 cut-off events. [2024-06-28 03:05:52,736 INFO L125 PetriNetUnfolderBase]: For 412848/412848 co-relation queries the response was YES. [2024-06-28 03:05:52,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38206 conditions, 3998 events. 2465/3998 cut-off events. For 412848/412848 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 23207 event pairs, 564 based on Foata normal form. 2/3999 useless extension candidates. Maximal degree in co-relation 38089. Up to 3563 conditions per place. [2024-06-28 03:05:52,783 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 317 selfloop transitions, 63 changer transitions 0/385 dead transitions. [2024-06-28 03:05:52,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 385 transitions, 5215 flow [2024-06-28 03:05:52,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:05:52,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:05:52,785 INFO L175 Difference]: Start difference. First operand has 265 places, 366 transitions, 4346 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:05:52,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 385 transitions, 5215 flow [2024-06-28 03:05:53,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 385 transitions, 5058 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:53,310 INFO L231 Difference]: Finished difference. Result has 267 places, 366 transitions, 4321 flow [2024-06-28 03:05:53,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4321, PETRI_PLACES=267, PETRI_TRANSITIONS=366} [2024-06-28 03:05:53,310 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 03:05:53,310 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 366 transitions, 4321 flow [2024-06-28 03:05:53,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:53,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:53,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:53,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:05:53,311 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 03:05:53,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1814304476, now seen corresponding path program 5 times [2024-06-28 03:05:53,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:53,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029901633] [2024-06-28 03:05:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:53,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:54,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029901633] [2024-06-28 03:05:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029901633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:54,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595651283] [2024-06-28 03:05:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:54,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:54,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:54,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:54,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 366 transitions, 4321 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:54,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:54,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:54,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:54,994 INFO L124 PetriNetUnfolderBase]: 2491/4035 cut-off events. [2024-06-28 03:05:54,994 INFO L125 PetriNetUnfolderBase]: For 428616/428622 co-relation queries the response was YES. [2024-06-28 03:05:55,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38897 conditions, 4035 events. 2491/4035 cut-off events. For 428616/428622 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 23470 event pairs, 512 based on Foata normal form. 8/4042 useless extension candidates. Maximal degree in co-relation 38779. Up to 3631 conditions per place. [2024-06-28 03:05:55,044 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 311 selfloop transitions, 76 changer transitions 0/392 dead transitions. [2024-06-28 03:05:55,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 392 transitions, 5568 flow [2024-06-28 03:05:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:05:55,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 03:05:55,046 INFO L175 Difference]: Start difference. First operand has 267 places, 366 transitions, 4321 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:05:55,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 392 transitions, 5568 flow [2024-06-28 03:05:55,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 392 transitions, 5346 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:55,590 INFO L231 Difference]: Finished difference. Result has 269 places, 377 transitions, 4559 flow [2024-06-28 03:05:55,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4099, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4559, PETRI_PLACES=269, PETRI_TRANSITIONS=377} [2024-06-28 03:05:55,591 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-28 03:05:55,591 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 377 transitions, 4559 flow [2024-06-28 03:05:55,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:55,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:55,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:05:55,591 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 03:05:55,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -982889150, now seen corresponding path program 9 times [2024-06-28 03:05:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817411288] [2024-06-28 03:05:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:55,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:56,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:56,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817411288] [2024-06-28 03:05:56,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817411288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:56,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:56,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:56,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014870768] [2024-06-28 03:05:56,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:56,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:56,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:56,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:56,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:56,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:56,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 377 transitions, 4559 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:56,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:56,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:56,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:57,207 INFO L124 PetriNetUnfolderBase]: 2501/4050 cut-off events. [2024-06-28 03:05:57,208 INFO L125 PetriNetUnfolderBase]: For 447058/447058 co-relation queries the response was YES. [2024-06-28 03:05:57,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39932 conditions, 4050 events. 2501/4050 cut-off events. For 447058/447058 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 23495 event pairs, 526 based on Foata normal form. 2/4051 useless extension candidates. Maximal degree in co-relation 39812. Up to 3531 conditions per place. [2024-06-28 03:05:57,255 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 304 selfloop transitions, 87 changer transitions 0/396 dead transitions. [2024-06-28 03:05:57,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 396 transitions, 5595 flow [2024-06-28 03:05:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:05:57,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:05:57,256 INFO L175 Difference]: Start difference. First operand has 269 places, 377 transitions, 4559 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:05:57,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 396 transitions, 5595 flow [2024-06-28 03:05:57,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 396 transitions, 5391 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-28 03:05:57,825 INFO L231 Difference]: Finished difference. Result has 273 places, 380 transitions, 4673 flow [2024-06-28 03:05:57,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4355, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4673, PETRI_PLACES=273, PETRI_TRANSITIONS=380} [2024-06-28 03:05:57,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-28 03:05:57,826 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 380 transitions, 4673 flow [2024-06-28 03:05:57,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:57,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:57,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:57,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:05:57,826 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 03:05:57,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1813888766, now seen corresponding path program 6 times [2024-06-28 03:05:57,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:57,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989112691] [2024-06-28 03:05:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:57,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:58,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:58,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989112691] [2024-06-28 03:05:58,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989112691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:58,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:58,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:58,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678086804] [2024-06-28 03:05:58,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:58,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:58,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:58,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:58,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:58,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:05:58,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 380 transitions, 4673 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:58,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:58,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:05:58,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:59,675 INFO L124 PetriNetUnfolderBase]: 2495/4045 cut-off events. [2024-06-28 03:05:59,675 INFO L125 PetriNetUnfolderBase]: For 456004/456010 co-relation queries the response was YES. [2024-06-28 03:05:59,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40280 conditions, 4045 events. 2495/4045 cut-off events. For 456004/456010 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 23554 event pairs, 510 based on Foata normal form. 8/4052 useless extension candidates. Maximal degree in co-relation 40158. Up to 3675 conditions per place. [2024-06-28 03:05:59,723 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 329 selfloop transitions, 62 changer transitions 0/396 dead transitions. [2024-06-28 03:05:59,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 396 transitions, 5564 flow [2024-06-28 03:05:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:05:59,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 03:05:59,725 INFO L175 Difference]: Start difference. First operand has 273 places, 380 transitions, 4673 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:05:59,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 396 transitions, 5564 flow [2024-06-28 03:06:00,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 396 transitions, 5214 flow, removed 90 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:00,500 INFO L231 Difference]: Finished difference. Result has 275 places, 381 transitions, 4469 flow [2024-06-28 03:06:00,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4327, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4469, PETRI_PLACES=275, PETRI_TRANSITIONS=381} [2024-06-28 03:06:00,500 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 233 predicate places. [2024-06-28 03:06:00,500 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 381 transitions, 4469 flow [2024-06-28 03:06:00,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:00,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:00,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:00,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:06:00,501 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 03:06:00,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 61693276, now seen corresponding path program 7 times [2024-06-28 03:06:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:00,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183081269] [2024-06-28 03:06:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:01,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:01,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183081269] [2024-06-28 03:06:01,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183081269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:01,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:01,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185358927] [2024-06-28 03:06:01,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:01,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:01,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:01,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:01,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:01,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 381 transitions, 4469 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:01,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:01,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:01,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:02,226 INFO L124 PetriNetUnfolderBase]: 2516/4079 cut-off events. [2024-06-28 03:06:02,226 INFO L125 PetriNetUnfolderBase]: For 467300/467308 co-relation queries the response was YES. [2024-06-28 03:06:02,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40595 conditions, 4079 events. 2516/4079 cut-off events. For 467300/467308 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 23840 event pairs, 517 based on Foata normal form. 9/4087 useless extension candidates. Maximal degree in co-relation 40472. Up to 3644 conditions per place. [2024-06-28 03:06:02,279 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 311 selfloop transitions, 87 changer transitions 0/403 dead transitions. [2024-06-28 03:06:02,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 403 transitions, 5714 flow [2024-06-28 03:06:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:06:02,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:06:02,280 INFO L175 Difference]: Start difference. First operand has 275 places, 381 transitions, 4469 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:06:02,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 403 transitions, 5714 flow [2024-06-28 03:06:03,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 403 transitions, 5569 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:03,043 INFO L231 Difference]: Finished difference. Result has 278 places, 390 transitions, 4749 flow [2024-06-28 03:06:03,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4324, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4749, PETRI_PLACES=278, PETRI_TRANSITIONS=390} [2024-06-28 03:06:03,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-28 03:06:03,044 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 390 transitions, 4749 flow [2024-06-28 03:06:03,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:03,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:03,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:03,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:06:03,044 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 03:06:03,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash 61335784, now seen corresponding path program 10 times [2024-06-28 03:06:03,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:03,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028956400] [2024-06-28 03:06:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:03,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028956400] [2024-06-28 03:06:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028956400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:03,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:03,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320261879] [2024-06-28 03:06:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:03,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:03,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:03,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:03,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 390 transitions, 4749 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:03,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:03,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:03,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:04,776 INFO L124 PetriNetUnfolderBase]: 2526/4089 cut-off events. [2024-06-28 03:06:04,776 INFO L125 PetriNetUnfolderBase]: For 490828/490828 co-relation queries the response was YES. [2024-06-28 03:06:04,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41719 conditions, 4089 events. 2526/4089 cut-off events. For 490828/490828 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 23811 event pairs, 528 based on Foata normal form. 2/4090 useless extension candidates. Maximal degree in co-relation 41594. Up to 3740 conditions per place. [2024-06-28 03:06:04,831 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 345 selfloop transitions, 54 changer transitions 0/404 dead transitions. [2024-06-28 03:06:04,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 404 transitions, 5747 flow [2024-06-28 03:06:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 03:06:04,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-28 03:06:04,833 INFO L175 Difference]: Start difference. First operand has 278 places, 390 transitions, 4749 flow. Second operand 8 states and 137 transitions. [2024-06-28 03:06:04,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 404 transitions, 5747 flow [2024-06-28 03:06:05,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 404 transitions, 5555 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:05,577 INFO L231 Difference]: Finished difference. Result has 282 places, 393 transitions, 4817 flow [2024-06-28 03:06:05,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4557, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4817, PETRI_PLACES=282, PETRI_TRANSITIONS=393} [2024-06-28 03:06:05,577 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-06-28 03:06:05,577 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 393 transitions, 4817 flow [2024-06-28 03:06:05,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:05,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:05,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:05,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:06:05,578 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 03:06:05,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash 986647582, now seen corresponding path program 8 times [2024-06-28 03:06:05,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:05,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576576345] [2024-06-28 03:06:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:06,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:06,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576576345] [2024-06-28 03:06:06,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576576345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:06,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:06,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:06,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048960078] [2024-06-28 03:06:06,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:06,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:06,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:06,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:06,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:06,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 393 transitions, 4817 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:06,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:06,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:06,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:07,320 INFO L124 PetriNetUnfolderBase]: 2547/4128 cut-off events. [2024-06-28 03:06:07,320 INFO L125 PetriNetUnfolderBase]: For 511162/511170 co-relation queries the response was YES. [2024-06-28 03:06:07,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42771 conditions, 4128 events. 2547/4128 cut-off events. For 511162/511170 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 24174 event pairs, 517 based on Foata normal form. 9/4136 useless extension candidates. Maximal degree in co-relation 42644. Up to 3607 conditions per place. [2024-06-28 03:06:07,375 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 291 selfloop transitions, 127 changer transitions 0/423 dead transitions. [2024-06-28 03:06:07,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 423 transitions, 6394 flow [2024-06-28 03:06:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:06:07,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 03:06:07,376 INFO L175 Difference]: Start difference. First operand has 282 places, 393 transitions, 4817 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:06:07,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 423 transitions, 6394 flow [2024-06-28 03:06:08,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 423 transitions, 6097 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:08,134 INFO L231 Difference]: Finished difference. Result has 284 places, 410 transitions, 5265 flow [2024-06-28 03:06:08,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4520, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5265, PETRI_PLACES=284, PETRI_TRANSITIONS=410} [2024-06-28 03:06:08,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-28 03:06:08,135 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 410 transitions, 5265 flow [2024-06-28 03:06:08,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:08,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:08,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:08,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:06:08,136 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 03:06:08,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1543272282, now seen corresponding path program 11 times [2024-06-28 03:06:08,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:08,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716793013] [2024-06-28 03:06:08,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:08,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:08,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:08,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716793013] [2024-06-28 03:06:08,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716793013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:08,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:08,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595537005] [2024-06-28 03:06:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:09,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:09,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 410 transitions, 5265 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:09,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:09,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:09,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:09,867 INFO L124 PetriNetUnfolderBase]: 2565/4151 cut-off events. [2024-06-28 03:06:09,868 INFO L125 PetriNetUnfolderBase]: For 537197/537199 co-relation queries the response was YES. [2024-06-28 03:06:09,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44131 conditions, 4151 events. 2565/4151 cut-off events. For 537197/537199 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 24253 event pairs, 537 based on Foata normal form. 4/4154 useless extension candidates. Maximal degree in co-relation 44002. Up to 3501 conditions per place. [2024-06-28 03:06:09,924 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 297 selfloop transitions, 130 changer transitions 0/432 dead transitions. [2024-06-28 03:06:09,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 432 transitions, 6761 flow [2024-06-28 03:06:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:06:09,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:06:09,925 INFO L175 Difference]: Start difference. First operand has 284 places, 410 transitions, 5265 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:06:09,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 432 transitions, 6761 flow [2024-06-28 03:06:10,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 432 transitions, 6465 flow, removed 129 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:10,793 INFO L231 Difference]: Finished difference. Result has 289 places, 416 transitions, 5599 flow [2024-06-28 03:06:10,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5031, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5599, PETRI_PLACES=289, PETRI_TRANSITIONS=416} [2024-06-28 03:06:10,794 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-28 03:06:10,794 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 416 transitions, 5599 flow [2024-06-28 03:06:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:10,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:10,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:06:10,795 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:10,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 980933662, now seen corresponding path program 9 times [2024-06-28 03:06:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:10,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231206531] [2024-06-28 03:06:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:11,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:11,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231206531] [2024-06-28 03:06:11,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231206531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:11,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:11,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:11,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595699541] [2024-06-28 03:06:11,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:11,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:11,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:11,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:11,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:11,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:11,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 416 transitions, 5599 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:11,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:11,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:11,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:12,555 INFO L124 PetriNetUnfolderBase]: 2562/4151 cut-off events. [2024-06-28 03:06:12,555 INFO L125 PetriNetUnfolderBase]: For 541903/541911 co-relation queries the response was YES. [2024-06-28 03:06:12,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43977 conditions, 4151 events. 2562/4151 cut-off events. For 541903/541911 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 24352 event pairs, 549 based on Foata normal form. 9/4159 useless extension candidates. Maximal degree in co-relation 43847. Up to 3629 conditions per place. [2024-06-28 03:06:12,611 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 297 selfloop transitions, 129 changer transitions 0/431 dead transitions. [2024-06-28 03:06:12,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 431 transitions, 6843 flow [2024-06-28 03:06:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:06:12,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:06:12,613 INFO L175 Difference]: Start difference. First operand has 289 places, 416 transitions, 5599 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:06:12,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 431 transitions, 6843 flow [2024-06-28 03:06:13,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 431 transitions, 6518 flow, removed 100 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:13,359 INFO L231 Difference]: Finished difference. Result has 294 places, 419 transitions, 5643 flow [2024-06-28 03:06:13,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5643, PETRI_PLACES=294, PETRI_TRANSITIONS=419} [2024-06-28 03:06:13,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-28 03:06:13,360 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 419 transitions, 5643 flow [2024-06-28 03:06:13,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:13,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:13,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:13,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:06:13,361 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:13,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash 581198830, now seen corresponding path program 12 times [2024-06-28 03:06:13,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:13,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771804234] [2024-06-28 03:06:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:14,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:14,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771804234] [2024-06-28 03:06:14,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771804234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:14,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:14,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:14,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542256782] [2024-06-28 03:06:14,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:14,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:14,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:14,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:14,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:14,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 419 transitions, 5643 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:14,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:14,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:14,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:15,042 INFO L124 PetriNetUnfolderBase]: 2556/4141 cut-off events. [2024-06-28 03:06:15,043 INFO L125 PetriNetUnfolderBase]: For 539020/539022 co-relation queries the response was YES. [2024-06-28 03:06:15,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43638 conditions, 4141 events. 2556/4141 cut-off events. For 539020/539022 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 24198 event pairs, 574 based on Foata normal form. 4/4144 useless extension candidates. Maximal degree in co-relation 43505. Up to 3492 conditions per place. [2024-06-28 03:06:15,103 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 306 selfloop transitions, 125 changer transitions 0/436 dead transitions. [2024-06-28 03:06:15,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 436 transitions, 6823 flow [2024-06-28 03:06:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:15,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:06:15,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 03:06:15,104 INFO L175 Difference]: Start difference. First operand has 294 places, 419 transitions, 5643 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:06:15,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 436 transitions, 6823 flow [2024-06-28 03:06:16,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 436 transitions, 6605 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:16,024 INFO L231 Difference]: Finished difference. Result has 298 places, 419 transitions, 5681 flow [2024-06-28 03:06:16,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5425, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5681, PETRI_PLACES=298, PETRI_TRANSITIONS=419} [2024-06-28 03:06:16,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-28 03:06:16,030 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 419 transitions, 5681 flow [2024-06-28 03:06:16,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:16,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:16,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:16,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:06:16,031 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:16,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash 581199202, now seen corresponding path program 10 times [2024-06-28 03:06:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:16,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576067394] [2024-06-28 03:06:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:16,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576067394] [2024-06-28 03:06:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576067394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:16,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:16,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472322123] [2024-06-28 03:06:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:16,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:16,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:16,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:17,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:17,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 419 transitions, 5681 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:17,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:17,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:17,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:17,856 INFO L124 PetriNetUnfolderBase]: 2566/4159 cut-off events. [2024-06-28 03:06:17,856 INFO L125 PetriNetUnfolderBase]: For 550789/550797 co-relation queries the response was YES. [2024-06-28 03:06:17,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44002 conditions, 4159 events. 2566/4159 cut-off events. For 550789/550797 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 24359 event pairs, 547 based on Foata normal form. 10/4168 useless extension candidates. Maximal degree in co-relation 43868. Up to 3732 conditions per place. [2024-06-28 03:06:17,914 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 351 selfloop transitions, 79 changer transitions 0/435 dead transitions. [2024-06-28 03:06:17,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 435 transitions, 6705 flow [2024-06-28 03:06:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:06:17,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 03:06:17,917 INFO L175 Difference]: Start difference. First operand has 298 places, 419 transitions, 5681 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:06:17,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 435 transitions, 6705 flow [2024-06-28 03:06:18,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 435 transitions, 6240 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:18,684 INFO L231 Difference]: Finished difference. Result has 298 places, 423 transitions, 5515 flow [2024-06-28 03:06:18,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5216, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5515, PETRI_PLACES=298, PETRI_TRANSITIONS=423} [2024-06-28 03:06:18,684 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-28 03:06:18,685 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 423 transitions, 5515 flow [2024-06-28 03:06:18,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:18,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:18,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:06:18,686 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:18,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 758746432, now seen corresponding path program 11 times [2024-06-28 03:06:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452368329] [2024-06-28 03:06:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:19,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:19,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452368329] [2024-06-28 03:06:19,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452368329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:19,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:19,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:19,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602006628] [2024-06-28 03:06:19,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:19,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:19,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 423 transitions, 5515 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:19,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:19,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:19,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:20,560 INFO L124 PetriNetUnfolderBase]: 2560/4149 cut-off events. [2024-06-28 03:06:20,560 INFO L125 PetriNetUnfolderBase]: For 552076/552084 co-relation queries the response was YES. [2024-06-28 03:06:20,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43324 conditions, 4149 events. 2560/4149 cut-off events. For 552076/552084 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 24276 event pairs, 551 based on Foata normal form. 10/4158 useless extension candidates. Maximal degree in co-relation 43190. Up to 3698 conditions per place. [2024-06-28 03:06:20,619 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 337 selfloop transitions, 95 changer transitions 0/437 dead transitions. [2024-06-28 03:06:20,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 437 transitions, 6639 flow [2024-06-28 03:06:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 03:06:20,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-28 03:06:20,621 INFO L175 Difference]: Start difference. First operand has 298 places, 423 transitions, 5515 flow. Second operand 8 states and 143 transitions. [2024-06-28 03:06:20,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 437 transitions, 6639 flow [2024-06-28 03:06:21,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 437 transitions, 6302 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:21,599 INFO L231 Difference]: Finished difference. Result has 301 places, 425 transitions, 5461 flow [2024-06-28 03:06:21,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5198, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5461, PETRI_PLACES=301, PETRI_TRANSITIONS=425} [2024-06-28 03:06:21,599 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-06-28 03:06:21,599 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 425 transitions, 5461 flow [2024-06-28 03:06:21,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:21,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:21,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:21,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:06:21,600 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 03:06:21,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 758330722, now seen corresponding path program 12 times [2024-06-28 03:06:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:21,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168629823] [2024-06-28 03:06:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:21,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:22,452 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 03:06:22,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:22,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168629823] [2024-06-28 03:06:22,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168629823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:22,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:22,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:22,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111285381] [2024-06-28 03:06:22,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:22,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:22,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:22,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:22,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:22,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:22,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 425 transitions, 5461 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:22,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:22,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:22,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:23,470 INFO L124 PetriNetUnfolderBase]: 2554/4143 cut-off events. [2024-06-28 03:06:23,475 INFO L125 PetriNetUnfolderBase]: For 554625/554633 co-relation queries the response was YES. [2024-06-28 03:06:23,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43061 conditions, 4143 events. 2554/4143 cut-off events. For 554625/554633 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 24299 event pairs, 549 based on Foata normal form. 10/4152 useless extension candidates. Maximal degree in co-relation 42925. Up to 3716 conditions per place. [2024-06-28 03:06:23,525 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 352 selfloop transitions, 80 changer transitions 0/437 dead transitions. [2024-06-28 03:06:23,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 437 transitions, 6363 flow [2024-06-28 03:06:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:06:23,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 03:06:23,526 INFO L175 Difference]: Start difference. First operand has 301 places, 425 transitions, 5461 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:06:23,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 437 transitions, 6363 flow [2024-06-28 03:06:24,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 437 transitions, 6074 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:24,361 INFO L231 Difference]: Finished difference. Result has 304 places, 425 transitions, 5339 flow [2024-06-28 03:06:24,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5172, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5339, PETRI_PLACES=304, PETRI_TRANSITIONS=425} [2024-06-28 03:06:24,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 03:06:24,364 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 425 transitions, 5339 flow [2024-06-28 03:06:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:24,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:24,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:24,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:06:24,365 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 03:06:24,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash 581075884, now seen corresponding path program 4 times [2024-06-28 03:06:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:24,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037220291] [2024-06-28 03:06:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:24,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:25,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:25,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037220291] [2024-06-28 03:06:25,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037220291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:25,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167585703] [2024-06-28 03:06:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:25,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:25,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:25,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:25,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:25,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 425 transitions, 5339 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:25,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:25,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:25,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:26,244 INFO L124 PetriNetUnfolderBase]: 2549/4130 cut-off events. [2024-06-28 03:06:26,244 INFO L125 PetriNetUnfolderBase]: For 557417/557417 co-relation queries the response was YES. [2024-06-28 03:06:26,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42750 conditions, 4130 events. 2549/4130 cut-off events. For 557417/557417 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 24140 event pairs, 549 based on Foata normal form. 2/4131 useless extension candidates. Maximal degree in co-relation 42613. Up to 3773 conditions per place. [2024-06-28 03:06:26,298 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 380 selfloop transitions, 53 changer transitions 0/438 dead transitions. [2024-06-28 03:06:26,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 438 transitions, 6321 flow [2024-06-28 03:06:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:26,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:26,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 03:06:26,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:06:26,299 INFO L175 Difference]: Start difference. First operand has 304 places, 425 transitions, 5339 flow. Second operand 8 states and 136 transitions. [2024-06-28 03:06:26,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 438 transitions, 6321 flow [2024-06-28 03:06:27,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 438 transitions, 6158 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:27,240 INFO L231 Difference]: Finished difference. Result has 306 places, 427 transitions, 5375 flow [2024-06-28 03:06:27,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5176, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5375, PETRI_PLACES=306, PETRI_TRANSITIONS=427} [2024-06-28 03:06:27,241 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 03:06:27,242 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 427 transitions, 5375 flow [2024-06-28 03:06:27,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:27,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:27,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:27,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:06:27,242 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:27,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash 980942590, now seen corresponding path program 1 times [2024-06-28 03:06:27,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:27,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674551901] [2024-06-28 03:06:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:27,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:28,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:28,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674551901] [2024-06-28 03:06:28,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674551901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:28,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:28,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:28,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756457257] [2024-06-28 03:06:28,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:28,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:28,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:28,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:06:28,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 427 transitions, 5375 flow. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:28,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:28,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:06:28,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:29,671 INFO L124 PetriNetUnfolderBase]: 2387/3905 cut-off events. [2024-06-28 03:06:29,671 INFO L125 PetriNetUnfolderBase]: For 562810/562852 co-relation queries the response was YES. [2024-06-28 03:06:29,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40982 conditions, 3905 events. 2387/3905 cut-off events. For 562810/562852 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23105 event pairs, 512 based on Foata normal form. 23/3891 useless extension candidates. Maximal degree in co-relation 40844. Up to 3361 conditions per place. [2024-06-28 03:06:29,726 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 305 selfloop transitions, 79 changer transitions 0/441 dead transitions. [2024-06-28 03:06:29,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 441 transitions, 6265 flow [2024-06-28 03:06:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:06:29,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:06:29,728 INFO L175 Difference]: Start difference. First operand has 306 places, 427 transitions, 5375 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:06:29,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 441 transitions, 6265 flow [2024-06-28 03:06:30,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 441 transitions, 6082 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:30,563 INFO L231 Difference]: Finished difference. Result has 309 places, 430 transitions, 5452 flow [2024-06-28 03:06:30,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5192, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5452, PETRI_PLACES=309, PETRI_TRANSITIONS=430} [2024-06-28 03:06:30,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-28 03:06:30,564 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 430 transitions, 5452 flow [2024-06-28 03:06:30,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:30,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:30,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:06:30,564 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:30,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2009242292, now seen corresponding path program 5 times [2024-06-28 03:06:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:30,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789884076] [2024-06-28 03:06:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:31,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789884076] [2024-06-28 03:06:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789884076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:31,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:31,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:31,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256648853] [2024-06-28 03:06:31,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:31,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:31,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:31,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 430 transitions, 5452 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:31,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:31,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:31,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:32,341 INFO L124 PetriNetUnfolderBase]: 2573/4173 cut-off events. [2024-06-28 03:06:32,341 INFO L125 PetriNetUnfolderBase]: For 571564/571568 co-relation queries the response was YES. [2024-06-28 03:06:32,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43069 conditions, 4173 events. 2573/4173 cut-off events. For 571564/571568 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 24576 event pairs, 539 based on Foata normal form. 5/4176 useless extension candidates. Maximal degree in co-relation 42930. Up to 3769 conditions per place. [2024-06-28 03:06:32,400 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 395 selfloop transitions, 70 changer transitions 0/470 dead transitions. [2024-06-28 03:06:32,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 470 transitions, 6618 flow [2024-06-28 03:06:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:32,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:06:32,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-28 03:06:32,402 INFO L175 Difference]: Start difference. First operand has 309 places, 430 transitions, 5452 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:06:32,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 470 transitions, 6618 flow [2024-06-28 03:06:33,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 470 transitions, 6306 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-06-28 03:06:33,352 INFO L231 Difference]: Finished difference. Result has 312 places, 446 transitions, 5476 flow [2024-06-28 03:06:33,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5140, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5476, PETRI_PLACES=312, PETRI_TRANSITIONS=446} [2024-06-28 03:06:33,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2024-06-28 03:06:33,353 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 446 transitions, 5476 flow [2024-06-28 03:06:33,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:33,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:33,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:33,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:06:33,353 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:33,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash -581812162, now seen corresponding path program 13 times [2024-06-28 03:06:33,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:33,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440699594] [2024-06-28 03:06:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:34,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:34,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440699594] [2024-06-28 03:06:34,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440699594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:34,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:34,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:34,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351355950] [2024-06-28 03:06:34,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:34,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:34,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:34,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:34,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:34,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 446 transitions, 5476 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:34,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:34,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:34,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:35,308 INFO L124 PetriNetUnfolderBase]: 2592/4200 cut-off events. [2024-06-28 03:06:35,309 INFO L125 PetriNetUnfolderBase]: For 577471/577471 co-relation queries the response was YES. [2024-06-28 03:06:35,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43158 conditions, 4200 events. 2592/4200 cut-off events. For 577471/577471 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 24648 event pairs, 535 based on Foata normal form. 2/4201 useless extension candidates. Maximal degree in co-relation 43017. Up to 3842 conditions per place. [2024-06-28 03:06:35,367 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 417 selfloop transitions, 56 changer transitions 0/478 dead transitions. [2024-06-28 03:06:35,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 478 transitions, 6660 flow [2024-06-28 03:06:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:06:35,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:06:35,369 INFO L175 Difference]: Start difference. First operand has 312 places, 446 transitions, 5476 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:06:35,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 478 transitions, 6660 flow [2024-06-28 03:06:36,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 478 transitions, 6450 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:36,309 INFO L231 Difference]: Finished difference. Result has 317 places, 458 transitions, 5580 flow [2024-06-28 03:06:36,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5266, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5580, PETRI_PLACES=317, PETRI_TRANSITIONS=458} [2024-06-28 03:06:36,310 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-28 03:06:36,310 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 458 transitions, 5580 flow [2024-06-28 03:06:36,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:36,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:36,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:36,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:06:36,311 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:36,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:36,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1100791016, now seen corresponding path program 1 times [2024-06-28 03:06:36,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:36,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69472803] [2024-06-28 03:06:36,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:36,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:37,140 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 03:06:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69472803] [2024-06-28 03:06:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69472803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:37,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976992930] [2024-06-28 03:06:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:37,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:37,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:06:37,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 458 transitions, 5580 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:37,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:37,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:06:37,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:38,274 INFO L124 PetriNetUnfolderBase]: 2540/4146 cut-off events. [2024-06-28 03:06:38,275 INFO L125 PetriNetUnfolderBase]: For 592232/592232 co-relation queries the response was YES. [2024-06-28 03:06:38,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43031 conditions, 4146 events. 2540/4146 cut-off events. For 592232/592232 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 24607 event pairs, 511 based on Foata normal form. 2/4146 useless extension candidates. Maximal degree in co-relation 42887. Up to 3715 conditions per place. [2024-06-28 03:06:38,326 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 437 selfloop transitions, 16 changer transitions 0/481 dead transitions. [2024-06-28 03:06:38,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 481 transitions, 6646 flow [2024-06-28 03:06:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:06:38,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 03:06:38,327 INFO L175 Difference]: Start difference. First operand has 317 places, 458 transitions, 5580 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:06:38,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 481 transitions, 6646 flow [2024-06-28 03:06:39,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 481 transitions, 6496 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:39,178 INFO L231 Difference]: Finished difference. Result has 317 places, 460 transitions, 5547 flow [2024-06-28 03:06:39,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5430, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5547, PETRI_PLACES=317, PETRI_TRANSITIONS=460} [2024-06-28 03:06:39,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-28 03:06:39,179 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 460 transitions, 5547 flow [2024-06-28 03:06:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:39,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:39,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:39,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:06:39,180 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:39,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1649023306, now seen corresponding path program 2 times [2024-06-28 03:06:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188006032] [2024-06-28 03:06:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188006032] [2024-06-28 03:06:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188006032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:39,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:39,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019868438] [2024-06-28 03:06:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:39,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:39,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:40,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:06:40,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 460 transitions, 5547 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:40,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:40,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:06:40,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:41,089 INFO L124 PetriNetUnfolderBase]: 2548/4163 cut-off events. [2024-06-28 03:06:41,089 INFO L125 PetriNetUnfolderBase]: For 603999/603999 co-relation queries the response was YES. [2024-06-28 03:06:41,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43313 conditions, 4163 events. 2548/4163 cut-off events. For 603999/603999 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 24743 event pairs, 546 based on Foata normal form. 2/4163 useless extension candidates. Maximal degree in co-relation 43168. Up to 3744 conditions per place. [2024-06-28 03:06:41,142 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 434 selfloop transitions, 17 changer transitions 0/479 dead transitions. [2024-06-28 03:06:41,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 479 transitions, 6595 flow [2024-06-28 03:06:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:06:41,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:06:41,143 INFO L175 Difference]: Start difference. First operand has 317 places, 460 transitions, 5547 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:06:41,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 479 transitions, 6595 flow [2024-06-28 03:06:42,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 479 transitions, 6494 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:42,196 INFO L231 Difference]: Finished difference. Result has 319 places, 462 transitions, 5569 flow [2024-06-28 03:06:42,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5446, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5569, PETRI_PLACES=319, PETRI_TRANSITIONS=462} [2024-06-28 03:06:42,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-28 03:06:42,196 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 462 transitions, 5569 flow [2024-06-28 03:06:42,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:42,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:42,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:42,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:06:42,197 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:42,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1814134658, now seen corresponding path program 3 times [2024-06-28 03:06:42,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:42,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638501799] [2024-06-28 03:06:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:42,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:42,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:42,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638501799] [2024-06-28 03:06:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638501799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:43,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:43,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:43,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039517212] [2024-06-28 03:06:43,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:43,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:43,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:43,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:06:43,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 462 transitions, 5569 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:43,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:43,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:06:43,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:44,138 INFO L124 PetriNetUnfolderBase]: 2556/4175 cut-off events. [2024-06-28 03:06:44,138 INFO L125 PetriNetUnfolderBase]: For 618941/618941 co-relation queries the response was YES. [2024-06-28 03:06:44,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43576 conditions, 4175 events. 2556/4175 cut-off events. For 618941/618941 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 24805 event pairs, 544 based on Foata normal form. 2/4175 useless extension candidates. Maximal degree in co-relation 43430. Up to 3762 conditions per place. [2024-06-28 03:06:44,191 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 436 selfloop transitions, 17 changer transitions 0/481 dead transitions. [2024-06-28 03:06:44,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 481 transitions, 6642 flow [2024-06-28 03:06:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:44,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:06:44,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:06:44,192 INFO L175 Difference]: Start difference. First operand has 319 places, 462 transitions, 5569 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:06:44,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 481 transitions, 6642 flow [2024-06-28 03:06:45,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 481 transitions, 6535 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:45,274 INFO L231 Difference]: Finished difference. Result has 322 places, 467 transitions, 5628 flow [2024-06-28 03:06:45,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5462, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5628, PETRI_PLACES=322, PETRI_TRANSITIONS=467} [2024-06-28 03:06:45,275 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 280 predicate places. [2024-06-28 03:06:45,275 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 467 transitions, 5628 flow [2024-06-28 03:06:45,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:45,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:45,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:45,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:06:45,276 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:45,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1124626882, now seen corresponding path program 1 times [2024-06-28 03:06:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891204164] [2024-06-28 03:06:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:45,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:46,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:46,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891204164] [2024-06-28 03:06:46,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891204164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:46,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:46,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:46,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973928902] [2024-06-28 03:06:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:46,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:46,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:46,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:46,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:46,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 467 transitions, 5628 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:46,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:46,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:46,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:47,762 INFO L124 PetriNetUnfolderBase]: 2610/4229 cut-off events. [2024-06-28 03:06:47,762 INFO L125 PetriNetUnfolderBase]: For 618483/618483 co-relation queries the response was YES. [2024-06-28 03:06:47,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43747 conditions, 4229 events. 2610/4229 cut-off events. For 618483/618483 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 24893 event pairs, 563 based on Foata normal form. 2/4229 useless extension candidates. Maximal degree in co-relation 43599. Up to 3931 conditions per place. [2024-06-28 03:06:47,822 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 450 selfloop transitions, 26 changer transitions 0/481 dead transitions. [2024-06-28 03:06:47,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 481 transitions, 6630 flow [2024-06-28 03:06:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:47,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:06:47,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:06:47,824 INFO L175 Difference]: Start difference. First operand has 322 places, 467 transitions, 5628 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:06:47,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 481 transitions, 6630 flow [2024-06-28 03:06:49,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 481 transitions, 6519 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:49,148 INFO L231 Difference]: Finished difference. Result has 326 places, 467 transitions, 5576 flow [2024-06-28 03:06:49,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5576, PETRI_PLACES=326, PETRI_TRANSITIONS=467} [2024-06-28 03:06:49,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-28 03:06:49,149 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 467 transitions, 5576 flow [2024-06-28 03:06:49,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:49,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:49,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:49,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:06:49,150 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 03:06:49,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:49,150 INFO L85 PathProgramCache]: Analyzing trace with hash 758576614, now seen corresponding path program 4 times [2024-06-28 03:06:49,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:49,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434803691] [2024-06-28 03:06:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:49,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:49,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434803691] [2024-06-28 03:06:49,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434803691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:49,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:49,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:49,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409675062] [2024-06-28 03:06:49,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:49,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:49,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:49,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:49,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:50,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:06:50,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 467 transitions, 5576 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:50,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:50,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:06:50,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:50,954 INFO L124 PetriNetUnfolderBase]: 2545/4165 cut-off events. [2024-06-28 03:06:50,955 INFO L125 PetriNetUnfolderBase]: For 622164/622166 co-relation queries the response was YES. [2024-06-28 03:06:50,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43155 conditions, 4165 events. 2545/4165 cut-off events. For 622164/622166 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 24827 event pairs, 544 based on Foata normal form. 4/4167 useless extension candidates. Maximal degree in co-relation 43006. Up to 3738 conditions per place. [2024-06-28 03:06:51,009 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 431 selfloop transitions, 24 changer transitions 0/483 dead transitions. [2024-06-28 03:06:51,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 483 transitions, 6644 flow [2024-06-28 03:06:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:06:51,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:06:51,010 INFO L175 Difference]: Start difference. First operand has 326 places, 467 transitions, 5576 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:06:51,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 483 transitions, 6644 flow [2024-06-28 03:06:52,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 483 transitions, 6497 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:52,218 INFO L231 Difference]: Finished difference. Result has 327 places, 472 transitions, 5616 flow [2024-06-28 03:06:52,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5430, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5616, PETRI_PLACES=327, PETRI_TRANSITIONS=472} [2024-06-28 03:06:52,219 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-28 03:06:52,219 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 472 transitions, 5616 flow [2024-06-28 03:06:52,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:52,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:52,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:52,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:06:52,220 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 03:06:52,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 758761312, now seen corresponding path program 2 times [2024-06-28 03:06:52,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:52,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622451917] [2024-06-28 03:06:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:52,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:53,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622451917] [2024-06-28 03:06:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622451917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:53,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131737025] [2024-06-28 03:06:53,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:53,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:53,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:53,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:53,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:53,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 472 transitions, 5616 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:53,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:53,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:53,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:54,767 INFO L124 PetriNetUnfolderBase]: 2597/4209 cut-off events. [2024-06-28 03:06:54,767 INFO L125 PetriNetUnfolderBase]: For 622249/622251 co-relation queries the response was YES. [2024-06-28 03:06:54,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43265 conditions, 4209 events. 2597/4209 cut-off events. For 622249/622251 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 24763 event pairs, 564 based on Foata normal form. 4/4211 useless extension candidates. Maximal degree in co-relation 43115. Up to 3904 conditions per place. [2024-06-28 03:06:54,829 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 445 selfloop transitions, 33 changer transitions 0/483 dead transitions. [2024-06-28 03:06:54,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 483 transitions, 6606 flow [2024-06-28 03:06:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:54,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 03:06:54,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 03:06:54,830 INFO L175 Difference]: Start difference. First operand has 327 places, 472 transitions, 5616 flow. Second operand 9 states and 153 transitions. [2024-06-28 03:06:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 483 transitions, 6606 flow [2024-06-28 03:06:55,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 483 transitions, 6425 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:55,939 INFO L231 Difference]: Finished difference. Result has 330 places, 472 transitions, 5508 flow [2024-06-28 03:06:55,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5435, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5508, PETRI_PLACES=330, PETRI_TRANSITIONS=472} [2024-06-28 03:06:55,940 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-06-28 03:06:55,940 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 472 transitions, 5508 flow [2024-06-28 03:06:55,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:55,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:55,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:55,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:06:55,940 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 03:06:55,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash 305007746, now seen corresponding path program 1 times [2024-06-28 03:06:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761792098] [2024-06-28 03:06:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:55,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:56,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:56,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761792098] [2024-06-28 03:06:56,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761792098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:56,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:56,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:56,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487712547] [2024-06-28 03:06:56,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:56,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:56,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:56,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:56,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:06:56,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 472 transitions, 5508 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:56,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:56,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:06:56,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:58,071 INFO L124 PetriNetUnfolderBase]: 2638/4282 cut-off events. [2024-06-28 03:06:58,072 INFO L125 PetriNetUnfolderBase]: For 626834/626834 co-relation queries the response was YES. [2024-06-28 03:06:58,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43521 conditions, 4282 events. 2638/4282 cut-off events. For 626834/626834 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 25314 event pairs, 526 based on Foata normal form. 1/4282 useless extension candidates. Maximal degree in co-relation 43371. Up to 3909 conditions per place. [2024-06-28 03:06:58,126 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 458 selfloop transitions, 46 changer transitions 0/509 dead transitions. [2024-06-28 03:06:58,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 509 transitions, 6878 flow [2024-06-28 03:06:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:06:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:06:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 03:06:58,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-28 03:06:58,127 INFO L175 Difference]: Start difference. First operand has 330 places, 472 transitions, 5508 flow. Second operand 10 states and 175 transitions. [2024-06-28 03:06:58,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 509 transitions, 6878 flow [2024-06-28 03:06:59,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 509 transitions, 6671 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:59,273 INFO L231 Difference]: Finished difference. Result has 333 places, 486 transitions, 5719 flow [2024-06-28 03:06:59,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5301, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5719, PETRI_PLACES=333, PETRI_TRANSITIONS=486} [2024-06-28 03:06:59,273 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-28 03:06:59,274 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 486 transitions, 5719 flow [2024-06-28 03:06:59,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:59,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:59,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:59,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:06:59,274 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 03:06:59,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:59,274 INFO L85 PathProgramCache]: Analyzing trace with hash -554341274, now seen corresponding path program 1 times [2024-06-28 03:06:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138646404] [2024-06-28 03:06:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:00,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:00,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138646404] [2024-06-28 03:07:00,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138646404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:00,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:00,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130744452] [2024-06-28 03:07:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:00,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:00,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:00,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 486 transitions, 5719 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:00,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:00,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:00,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:01,221 INFO L124 PetriNetUnfolderBase]: 2648/4293 cut-off events. [2024-06-28 03:07:01,221 INFO L125 PetriNetUnfolderBase]: For 650521/650525 co-relation queries the response was YES. [2024-06-28 03:07:01,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44179 conditions, 4293 events. 2648/4293 cut-off events. For 650521/650525 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 25411 event pairs, 482 based on Foata normal form. 6/4297 useless extension candidates. Maximal degree in co-relation 44027. Up to 3906 conditions per place. [2024-06-28 03:07:01,286 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 461 selfloop transitions, 49 changer transitions 0/515 dead transitions. [2024-06-28 03:07:01,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 515 transitions, 7011 flow [2024-06-28 03:07:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:07:01,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 03:07:01,287 INFO L175 Difference]: Start difference. First operand has 333 places, 486 transitions, 5719 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:07:01,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 515 transitions, 7011 flow [2024-06-28 03:07:02,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 515 transitions, 6775 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:02,757 INFO L231 Difference]: Finished difference. Result has 336 places, 490 transitions, 5746 flow [2024-06-28 03:07:02,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5483, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5746, PETRI_PLACES=336, PETRI_TRANSITIONS=490} [2024-06-28 03:07:02,758 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2024-06-28 03:07:02,758 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 490 transitions, 5746 flow [2024-06-28 03:07:02,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:02,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:02,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:02,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:07:02,758 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 03:07:02,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:02,759 INFO L85 PathProgramCache]: Analyzing trace with hash 482259422, now seen corresponding path program 2 times [2024-06-28 03:07:02,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:02,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598919867] [2024-06-28 03:07:02,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:02,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:03,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:03,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598919867] [2024-06-28 03:07:03,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598919867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:03,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:03,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:03,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009403755] [2024-06-28 03:07:03,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:03,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:03,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:03,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:03,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:03,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 490 transitions, 5746 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:03,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:03,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:03,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:04,827 INFO L124 PetriNetUnfolderBase]: 2658/4307 cut-off events. [2024-06-28 03:07:04,827 INFO L125 PetriNetUnfolderBase]: For 671454/671458 co-relation queries the response was YES. [2024-06-28 03:07:04,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44955 conditions, 4307 events. 2658/4307 cut-off events. For 671454/671458 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 25453 event pairs, 518 based on Foata normal form. 6/4311 useless extension candidates. Maximal degree in co-relation 44802. Up to 3897 conditions per place. [2024-06-28 03:07:04,888 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 455 selfloop transitions, 61 changer transitions 0/521 dead transitions. [2024-06-28 03:07:04,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 521 transitions, 7092 flow [2024-06-28 03:07:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:07:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:07:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:07:04,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43658536585365854 [2024-06-28 03:07:04,889 INFO L175 Difference]: Start difference. First operand has 336 places, 490 transitions, 5746 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:07:04,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 521 transitions, 7092 flow [2024-06-28 03:07:06,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 521 transitions, 6857 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:06,551 INFO L231 Difference]: Finished difference. Result has 339 places, 494 transitions, 5806 flow [2024-06-28 03:07:06,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5511, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5806, PETRI_PLACES=339, PETRI_TRANSITIONS=494} [2024-06-28 03:07:06,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2024-06-28 03:07:06,551 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 494 transitions, 5806 flow [2024-06-28 03:07:06,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:06,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:06,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:06,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:07:06,552 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 03:07:06,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash 482496572, now seen corresponding path program 3 times [2024-06-28 03:07:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:06,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832581951] [2024-06-28 03:07:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:06,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:07,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:07,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832581951] [2024-06-28 03:07:07,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832581951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:07,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:07,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:07,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263338301] [2024-06-28 03:07:07,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:07,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:07,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:07,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 494 transitions, 5806 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:07,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:07,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:07,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:08,565 INFO L124 PetriNetUnfolderBase]: 2668/4321 cut-off events. [2024-06-28 03:07:08,565 INFO L125 PetriNetUnfolderBase]: For 684926/684930 co-relation queries the response was YES. [2024-06-28 03:07:08,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45585 conditions, 4321 events. 2668/4321 cut-off events. For 684926/684930 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 25573 event pairs, 482 based on Foata normal form. 5/4324 useless extension candidates. Maximal degree in co-relation 45431. Up to 3895 conditions per place. [2024-06-28 03:07:08,627 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 453 selfloop transitions, 68 changer transitions 0/526 dead transitions. [2024-06-28 03:07:08,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 526 transitions, 7099 flow [2024-06-28 03:07:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:07:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:07:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:07:08,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43658536585365854 [2024-06-28 03:07:08,629 INFO L175 Difference]: Start difference. First operand has 339 places, 494 transitions, 5806 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:07:08,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 526 transitions, 7099 flow [2024-06-28 03:07:10,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 526 transitions, 6832 flow, removed 75 selfloop flow, removed 8 redundant places. [2024-06-28 03:07:10,359 INFO L231 Difference]: Finished difference. Result has 342 places, 500 transitions, 5832 flow [2024-06-28 03:07:10,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5539, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5832, PETRI_PLACES=342, PETRI_TRANSITIONS=500} [2024-06-28 03:07:10,359 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-06-28 03:07:10,359 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 500 transitions, 5832 flow [2024-06-28 03:07:10,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:10,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:10,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:10,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:07:10,360 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 03:07:10,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:10,360 INFO L85 PathProgramCache]: Analyzing trace with hash -415817960, now seen corresponding path program 2 times [2024-06-28 03:07:10,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:10,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479614672] [2024-06-28 03:07:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:10,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479614672] [2024-06-28 03:07:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479614672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:11,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:11,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149563264] [2024-06-28 03:07:11,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:11,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:11,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:11,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:11,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:11,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:11,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 500 transitions, 5832 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:11,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:11,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:11,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:12,242 INFO L124 PetriNetUnfolderBase]: 2684/4348 cut-off events. [2024-06-28 03:07:12,242 INFO L125 PetriNetUnfolderBase]: For 700334/700334 co-relation queries the response was YES. [2024-06-28 03:07:12,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46195 conditions, 4348 events. 2684/4348 cut-off events. For 700334/700334 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 25752 event pairs, 532 based on Foata normal form. 1/4347 useless extension candidates. Maximal degree in co-relation 46039. Up to 3735 conditions per place. [2024-06-28 03:07:12,308 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 424 selfloop transitions, 104 changer transitions 0/533 dead transitions. [2024-06-28 03:07:12,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 533 transitions, 7213 flow [2024-06-28 03:07:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:07:12,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 03:07:12,312 INFO L175 Difference]: Start difference. First operand has 342 places, 500 transitions, 5832 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:07:12,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 533 transitions, 7213 flow [2024-06-28 03:07:13,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 533 transitions, 7003 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:13,914 INFO L231 Difference]: Finished difference. Result has 344 places, 506 transitions, 6044 flow [2024-06-28 03:07:13,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5622, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6044, PETRI_PLACES=344, PETRI_TRANSITIONS=506} [2024-06-28 03:07:13,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 302 predicate places. [2024-06-28 03:07:13,915 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 506 transitions, 6044 flow [2024-06-28 03:07:13,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:13,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:13,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:13,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:07:13,915 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 03:07:13,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash -415813124, now seen corresponding path program 4 times [2024-06-28 03:07:13,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:13,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951601192] [2024-06-28 03:07:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:13,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:14,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:14,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951601192] [2024-06-28 03:07:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951601192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:14,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:14,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:14,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305301607] [2024-06-28 03:07:14,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:14,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:14,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:14,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:14,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:14,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 506 transitions, 6044 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:14,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:14,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:14,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:16,001 INFO L124 PetriNetUnfolderBase]: 2694/4364 cut-off events. [2024-06-28 03:07:16,002 INFO L125 PetriNetUnfolderBase]: For 726761/726763 co-relation queries the response was YES. [2024-06-28 03:07:16,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46985 conditions, 4364 events. 2694/4364 cut-off events. For 726761/726763 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 25909 event pairs, 492 based on Foata normal form. 4/4367 useless extension candidates. Maximal degree in co-relation 46828. Up to 3895 conditions per place. [2024-06-28 03:07:16,067 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 457 selfloop transitions, 72 changer transitions 0/534 dead transitions. [2024-06-28 03:07:16,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 534 transitions, 7410 flow [2024-06-28 03:07:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:07:16,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:07:16,069 INFO L175 Difference]: Start difference. First operand has 344 places, 506 transitions, 6044 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:07:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 534 transitions, 7410 flow [2024-06-28 03:07:17,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 534 transitions, 7038 flow, removed 85 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:17,694 INFO L231 Difference]: Finished difference. Result has 347 places, 510 transitions, 6007 flow [2024-06-28 03:07:17,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5672, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6007, PETRI_PLACES=347, PETRI_TRANSITIONS=510} [2024-06-28 03:07:17,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 305 predicate places. [2024-06-28 03:07:17,695 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 510 transitions, 6007 flow [2024-06-28 03:07:17,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:17,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:17,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:17,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:07:17,696 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:17,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:17,696 INFO L85 PathProgramCache]: Analyzing trace with hash -410570900, now seen corresponding path program 3 times [2024-06-28 03:07:17,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:17,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670122532] [2024-06-28 03:07:17,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:17,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:18,486 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 03:07:18,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:18,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670122532] [2024-06-28 03:07:18,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670122532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:18,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:18,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:18,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700470257] [2024-06-28 03:07:18,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:18,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:18,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:18,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:18,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:18,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:18,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 510 transitions, 6007 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:18,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:18,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:18,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:19,671 INFO L124 PetriNetUnfolderBase]: 2699/4371 cut-off events. [2024-06-28 03:07:19,671 INFO L125 PetriNetUnfolderBase]: For 741393/741393 co-relation queries the response was YES. [2024-06-28 03:07:19,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47567 conditions, 4371 events. 2699/4371 cut-off events. For 741393/741393 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 25967 event pairs, 532 based on Foata normal form. 1/4370 useless extension candidates. Maximal degree in co-relation 47409. Up to 3756 conditions per place. [2024-06-28 03:07:19,736 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 429 selfloop transitions, 106 changer transitions 0/540 dead transitions. [2024-06-28 03:07:19,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 540 transitions, 7386 flow [2024-06-28 03:07:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:07:19,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-28 03:07:19,738 INFO L175 Difference]: Start difference. First operand has 347 places, 510 transitions, 6007 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:07:19,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 540 transitions, 7386 flow [2024-06-28 03:07:21,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 540 transitions, 7079 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:21,336 INFO L231 Difference]: Finished difference. Result has 349 places, 513 transitions, 6110 flow [2024-06-28 03:07:21,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5700, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6110, PETRI_PLACES=349, PETRI_TRANSITIONS=513} [2024-06-28 03:07:21,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-06-28 03:07:21,337 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 513 transitions, 6110 flow [2024-06-28 03:07:21,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:21,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:21,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:21,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:07:21,337 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:21,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash -410272370, now seen corresponding path program 4 times [2024-06-28 03:07:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205994119] [2024-06-28 03:07:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:22,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:22,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:22,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205994119] [2024-06-28 03:07:22,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205994119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:22,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:22,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:22,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235269016] [2024-06-28 03:07:22,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:22,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:22,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:22,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:22,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:22,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:22,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 513 transitions, 6110 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:22,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:22,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:22,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:23,518 INFO L124 PetriNetUnfolderBase]: 2712/4389 cut-off events. [2024-06-28 03:07:23,518 INFO L125 PetriNetUnfolderBase]: For 769642/769642 co-relation queries the response was YES. [2024-06-28 03:07:23,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48532 conditions, 4389 events. 2712/4389 cut-off events. For 769642/769642 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 26041 event pairs, 496 based on Foata normal form. 1/4388 useless extension candidates. Maximal degree in co-relation 48373. Up to 3742 conditions per place. [2024-06-28 03:07:23,584 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 416 selfloop transitions, 123 changer transitions 0/544 dead transitions. [2024-06-28 03:07:23,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 544 transitions, 7881 flow [2024-06-28 03:07:23,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:07:23,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-28 03:07:23,585 INFO L175 Difference]: Start difference. First operand has 349 places, 513 transitions, 6110 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:07:23,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 544 transitions, 7881 flow [2024-06-28 03:07:25,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 544 transitions, 7486 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:25,214 INFO L231 Difference]: Finished difference. Result has 351 places, 519 transitions, 6359 flow [2024-06-28 03:07:25,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6359, PETRI_PLACES=351, PETRI_TRANSITIONS=519} [2024-06-28 03:07:25,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2024-06-28 03:07:25,214 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 519 transitions, 6359 flow [2024-06-28 03:07:25,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:25,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:25,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:25,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:07:25,215 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:25,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:25,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1635324688, now seen corresponding path program 1 times [2024-06-28 03:07:25,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:25,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971297948] [2024-06-28 03:07:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:25,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:26,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:26,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971297948] [2024-06-28 03:07:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971297948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:26,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:26,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22153520] [2024-06-28 03:07:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:26,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:26,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:26,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:26,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 519 transitions, 6359 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:26,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:26,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:26,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:27,440 INFO L124 PetriNetUnfolderBase]: 2717/4402 cut-off events. [2024-06-28 03:07:27,440 INFO L125 PetriNetUnfolderBase]: For 788697/788701 co-relation queries the response was YES. [2024-06-28 03:07:27,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48990 conditions, 4402 events. 2717/4402 cut-off events. For 788697/788701 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 26184 event pairs, 535 based on Foata normal form. 5/4405 useless extension candidates. Maximal degree in co-relation 48830. Up to 3964 conditions per place. [2024-06-28 03:07:27,508 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 465 selfloop transitions, 75 changer transitions 0/545 dead transitions. [2024-06-28 03:07:27,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 545 transitions, 7668 flow [2024-06-28 03:07:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:07:27,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:07:27,519 INFO L175 Difference]: Start difference. First operand has 351 places, 519 transitions, 6359 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:07:27,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 545 transitions, 7668 flow [2024-06-28 03:07:29,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 545 transitions, 7330 flow, removed 109 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:29,307 INFO L231 Difference]: Finished difference. Result has 355 places, 522 transitions, 6317 flow [2024-06-28 03:07:29,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6021, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6317, PETRI_PLACES=355, PETRI_TRANSITIONS=522} [2024-06-28 03:07:29,307 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-06-28 03:07:29,308 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 522 transitions, 6317 flow [2024-06-28 03:07:29,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:29,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:29,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:29,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:07:29,308 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:29,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash -406558694, now seen corresponding path program 5 times [2024-06-28 03:07:29,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:29,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814216800] [2024-06-28 03:07:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:29,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:30,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:30,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814216800] [2024-06-28 03:07:30,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814216800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:30,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:30,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:30,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889824502] [2024-06-28 03:07:30,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:30,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:30,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:30,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:30,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:30,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 522 transitions, 6317 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:30,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:30,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:30,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:31,517 INFO L124 PetriNetUnfolderBase]: 2727/4416 cut-off events. [2024-06-28 03:07:31,517 INFO L125 PetriNetUnfolderBase]: For 809358/809360 co-relation queries the response was YES. [2024-06-28 03:07:31,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49620 conditions, 4416 events. 2727/4416 cut-off events. For 809358/809360 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 26257 event pairs, 490 based on Foata normal form. 4/4419 useless extension candidates. Maximal degree in co-relation 49458. Up to 3883 conditions per place. [2024-06-28 03:07:31,583 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 459 selfloop transitions, 85 changer transitions 0/549 dead transitions. [2024-06-28 03:07:31,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 549 transitions, 7763 flow [2024-06-28 03:07:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:07:31,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 03:07:31,584 INFO L175 Difference]: Start difference. First operand has 355 places, 522 transitions, 6317 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:07:31,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 549 transitions, 7763 flow [2024-06-28 03:07:33,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 549 transitions, 7493 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:33,288 INFO L231 Difference]: Finished difference. Result has 357 places, 526 transitions, 6428 flow [2024-06-28 03:07:33,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6047, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6428, PETRI_PLACES=357, PETRI_TRANSITIONS=526} [2024-06-28 03:07:33,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 315 predicate places. [2024-06-28 03:07:33,289 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 526 transitions, 6428 flow [2024-06-28 03:07:33,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:33,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:33,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:33,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:07:33,289 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:33,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash 424966454, now seen corresponding path program 6 times [2024-06-28 03:07:33,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:33,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436846406] [2024-06-28 03:07:33,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436846406] [2024-06-28 03:07:34,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436846406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:34,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:34,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:34,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639019976] [2024-06-28 03:07:34,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:34,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:34,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:34,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:34,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 526 transitions, 6428 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:34,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:34,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:34,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:35,469 INFO L124 PetriNetUnfolderBase]: 2737/4434 cut-off events. [2024-06-28 03:07:35,469 INFO L125 PetriNetUnfolderBase]: For 834379/834381 co-relation queries the response was YES. [2024-06-28 03:07:35,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50517 conditions, 4434 events. 2737/4434 cut-off events. For 834379/834381 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 26381 event pairs, 490 based on Foata normal form. 4/4437 useless extension candidates. Maximal degree in co-relation 50354. Up to 3861 conditions per place. [2024-06-28 03:07:35,533 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 450 selfloop transitions, 97 changer transitions 0/552 dead transitions. [2024-06-28 03:07:35,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 552 transitions, 7854 flow [2024-06-28 03:07:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:07:35,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:07:35,535 INFO L175 Difference]: Start difference. First operand has 357 places, 526 transitions, 6428 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:07:35,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 552 transitions, 7854 flow [2024-06-28 03:07:37,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 552 transitions, 7501 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:37,384 INFO L231 Difference]: Finished difference. Result has 359 places, 530 transitions, 6488 flow [2024-06-28 03:07:37,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6075, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6488, PETRI_PLACES=359, PETRI_TRANSITIONS=530} [2024-06-28 03:07:37,384 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-06-28 03:07:37,384 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 530 transitions, 6488 flow [2024-06-28 03:07:37,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:37,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:37,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:37,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:07:37,385 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:37,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:37,391 INFO L85 PathProgramCache]: Analyzing trace with hash 424966640, now seen corresponding path program 2 times [2024-06-28 03:07:37,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:37,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309587554] [2024-06-28 03:07:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:37,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:38,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:38,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309587554] [2024-06-28 03:07:38,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309587554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:38,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095543512] [2024-06-28 03:07:38,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:38,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:38,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:38,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:38,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 530 transitions, 6488 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:38,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:38,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:38,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:39,690 INFO L124 PetriNetUnfolderBase]: 2742/4447 cut-off events. [2024-06-28 03:07:39,691 INFO L125 PetriNetUnfolderBase]: For 850351/850357 co-relation queries the response was YES. [2024-06-28 03:07:39,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51098 conditions, 4447 events. 2742/4447 cut-off events. For 850351/850357 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 26512 event pairs, 494 based on Foata normal form. 7/4453 useless extension candidates. Maximal degree in co-relation 50934. Up to 4035 conditions per place. [2024-06-28 03:07:39,759 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 490 selfloop transitions, 58 changer transitions 0/553 dead transitions. [2024-06-28 03:07:39,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 553 transitions, 7810 flow [2024-06-28 03:07:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:39,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:07:39,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:07:39,761 INFO L175 Difference]: Start difference. First operand has 359 places, 530 transitions, 6488 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:07:39,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 553 transitions, 7810 flow [2024-06-28 03:07:41,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 553 transitions, 7425 flow, removed 98 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:41,666 INFO L231 Difference]: Finished difference. Result has 361 places, 533 transitions, 6377 flow [2024-06-28 03:07:41,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6103, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6377, PETRI_PLACES=361, PETRI_TRANSITIONS=533} [2024-06-28 03:07:41,666 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-28 03:07:41,666 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 533 transitions, 6377 flow [2024-06-28 03:07:41,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:41,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:41,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:41,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:07:41,667 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:41,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash 424966857, now seen corresponding path program 1 times [2024-06-28 03:07:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063738667] [2024-06-28 03:07:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:41,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:42,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:42,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063738667] [2024-06-28 03:07:42,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063738667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851554087] [2024-06-28 03:07:42,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:42,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:42,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:42,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:42,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:42,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 533 transitions, 6377 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:42,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:42,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:42,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:43,805 INFO L124 PetriNetUnfolderBase]: 2752/4461 cut-off events. [2024-06-28 03:07:43,805 INFO L125 PetriNetUnfolderBase]: For 859283/859289 co-relation queries the response was YES. [2024-06-28 03:07:43,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51371 conditions, 4461 events. 2752/4461 cut-off events. For 859283/859289 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 26570 event pairs, 493 based on Foata normal form. 8/4468 useless extension candidates. Maximal degree in co-relation 51206. Up to 4046 conditions per place. [2024-06-28 03:07:43,871 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 493 selfloop transitions, 59 changer transitions 0/557 dead transitions. [2024-06-28 03:07:43,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 557 transitions, 7739 flow [2024-06-28 03:07:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:07:43,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:07:43,872 INFO L175 Difference]: Start difference. First operand has 361 places, 533 transitions, 6377 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:07:43,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 557 transitions, 7739 flow [2024-06-28 03:07:45,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 557 transitions, 7487 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:45,801 INFO L231 Difference]: Finished difference. Result has 363 places, 537 transitions, 6436 flow [2024-06-28 03:07:45,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6125, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6436, PETRI_PLACES=363, PETRI_TRANSITIONS=537} [2024-06-28 03:07:45,802 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-06-28 03:07:45,802 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 537 transitions, 6436 flow [2024-06-28 03:07:45,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:45,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:45,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:45,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:07:45,803 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:45,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:45,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1621076681, now seen corresponding path program 2 times [2024-06-28 03:07:45,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:45,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719108293] [2024-06-28 03:07:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:45,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:46,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:46,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719108293] [2024-06-28 03:07:46,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719108293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:46,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:46,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:46,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27436635] [2024-06-28 03:07:46,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:46,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:46,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:46,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:46,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 537 transitions, 6436 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:46,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:46,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:46,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:48,005 INFO L124 PetriNetUnfolderBase]: 2762/4476 cut-off events. [2024-06-28 03:07:48,005 INFO L125 PetriNetUnfolderBase]: For 878734/878740 co-relation queries the response was YES. [2024-06-28 03:07:48,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52076 conditions, 4476 events. 2762/4476 cut-off events. For 878734/878740 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 26695 event pairs, 498 based on Foata normal form. 8/4483 useless extension candidates. Maximal degree in co-relation 51910. Up to 4045 conditions per place. [2024-06-28 03:07:48,071 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 483 selfloop transitions, 71 changer transitions 0/559 dead transitions. [2024-06-28 03:07:48,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 559 transitions, 7802 flow [2024-06-28 03:07:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:07:48,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:07:48,073 INFO L175 Difference]: Start difference. First operand has 363 places, 537 transitions, 6436 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:07:48,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 559 transitions, 7802 flow [2024-06-28 03:07:50,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 559 transitions, 7519 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:50,201 INFO L231 Difference]: Finished difference. Result has 365 places, 541 transitions, 6496 flow [2024-06-28 03:07:50,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6153, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6496, PETRI_PLACES=365, PETRI_TRANSITIONS=541} [2024-06-28 03:07:50,202 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-06-28 03:07:50,202 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 541 transitions, 6496 flow [2024-06-28 03:07:50,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:50,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:50,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:50,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:07:50,202 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:50,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:50,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1621076278, now seen corresponding path program 7 times [2024-06-28 03:07:50,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:50,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420479180] [2024-06-28 03:07:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:50,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:51,074 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 03:07:51,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:51,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420479180] [2024-06-28 03:07:51,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420479180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:51,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:51,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:51,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224601139] [2024-06-28 03:07:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:51,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:51,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:51,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:51,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:51,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:51,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 541 transitions, 6496 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:51,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:51,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:51,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:52,336 INFO L124 PetriNetUnfolderBase]: 2788/4514 cut-off events. [2024-06-28 03:07:52,336 INFO L125 PetriNetUnfolderBase]: For 916288/916290 co-relation queries the response was YES. [2024-06-28 03:07:52,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53508 conditions, 4514 events. 2788/4514 cut-off events. For 916288/916290 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 26854 event pairs, 504 based on Foata normal form. 4/4517 useless extension candidates. Maximal degree in co-relation 53341. Up to 3837 conditions per place. [2024-06-28 03:07:52,405 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 431 selfloop transitions, 134 changer transitions 0/570 dead transitions. [2024-06-28 03:07:52,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 570 transitions, 8450 flow [2024-06-28 03:07:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:07:52,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:07:52,407 INFO L175 Difference]: Start difference. First operand has 365 places, 541 transitions, 6496 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:07:52,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 570 transitions, 8450 flow [2024-06-28 03:07:54,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 570 transitions, 8135 flow, removed 89 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:54,539 INFO L231 Difference]: Finished difference. Result has 368 places, 549 transitions, 6932 flow [2024-06-28 03:07:54,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6181, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6932, PETRI_PLACES=368, PETRI_TRANSITIONS=549} [2024-06-28 03:07:54,540 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-28 03:07:54,540 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 549 transitions, 6932 flow [2024-06-28 03:07:54,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:54,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:54,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:54,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:07:54,541 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:54,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash 796793970, now seen corresponding path program 8 times [2024-06-28 03:07:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:54,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539962661] [2024-06-28 03:07:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:54,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:55,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:55,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539962661] [2024-06-28 03:07:55,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539962661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:55,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:55,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843618760] [2024-06-28 03:07:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:55,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:55,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:55,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:55,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 549 transitions, 6932 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:55,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:55,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:55,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:56,706 INFO L124 PetriNetUnfolderBase]: 2798/4525 cut-off events. [2024-06-28 03:07:56,707 INFO L125 PetriNetUnfolderBase]: For 938383/938383 co-relation queries the response was YES. [2024-06-28 03:07:56,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54502 conditions, 4525 events. 2798/4525 cut-off events. For 938383/938383 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 26886 event pairs, 487 based on Foata normal form. 1/4525 useless extension candidates. Maximal degree in co-relation 54333. Up to 4111 conditions per place. [2024-06-28 03:07:56,774 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 499 selfloop transitions, 67 changer transitions 0/571 dead transitions. [2024-06-28 03:07:56,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 571 transitions, 8295 flow [2024-06-28 03:07:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:07:56,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:07:56,776 INFO L175 Difference]: Start difference. First operand has 368 places, 549 transitions, 6932 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:07:56,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 571 transitions, 8295 flow [2024-06-28 03:07:58,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 571 transitions, 7885 flow, removed 129 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:58,772 INFO L231 Difference]: Finished difference. Result has 372 places, 555 transitions, 6843 flow [2024-06-28 03:07:58,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6522, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6843, PETRI_PLACES=372, PETRI_TRANSITIONS=555} [2024-06-28 03:07:58,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-28 03:07:58,773 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 555 transitions, 6843 flow [2024-06-28 03:07:58,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:58,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:58,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:58,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:07:58,773 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:58,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash 797181253, now seen corresponding path program 3 times [2024-06-28 03:07:58,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:58,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939817040] [2024-06-28 03:07:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:58,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:59,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:59,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939817040] [2024-06-28 03:07:59,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939817040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:59,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:59,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:59,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836025816] [2024-06-28 03:07:59,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:59,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:59,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:59,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:07:59,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 555 transitions, 6843 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:59,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:59,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:07:59,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:01,005 INFO L124 PetriNetUnfolderBase]: 2840/4590 cut-off events. [2024-06-28 03:08:01,006 INFO L125 PetriNetUnfolderBase]: For 1001974/1001980 co-relation queries the response was YES. [2024-06-28 03:08:01,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56196 conditions, 4590 events. 2840/4590 cut-off events. For 1001974/1001980 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 27431 event pairs, 498 based on Foata normal form. 8/4597 useless extension candidates. Maximal degree in co-relation 56025. Up to 4071 conditions per place. [2024-06-28 03:08:01,081 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 488 selfloop transitions, 93 changer transitions 0/586 dead transitions. [2024-06-28 03:08:01,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 586 transitions, 8657 flow [2024-06-28 03:08:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:01,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:08:01,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 03:08:01,082 INFO L175 Difference]: Start difference. First operand has 372 places, 555 transitions, 6843 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:08:01,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 586 transitions, 8657 flow [2024-06-28 03:08:03,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 586 transitions, 8377 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-28 03:08:03,443 INFO L231 Difference]: Finished difference. Result has 376 places, 565 transitions, 7109 flow [2024-06-28 03:08:03,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6563, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7109, PETRI_PLACES=376, PETRI_TRANSITIONS=565} [2024-06-28 03:08:03,443 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 334 predicate places. [2024-06-28 03:08:03,444 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 565 transitions, 7109 flow [2024-06-28 03:08:03,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:03,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:03,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:03,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:08:03,444 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:03,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash 796913940, now seen corresponding path program 9 times [2024-06-28 03:08:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146827753] [2024-06-28 03:08:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:04,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:04,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146827753] [2024-06-28 03:08:04,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146827753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:04,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:04,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769025889] [2024-06-28 03:08:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:04,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:04,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:04,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:04,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 565 transitions, 7109 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:04,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:04,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:04,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:05,648 INFO L124 PetriNetUnfolderBase]: 2869/4628 cut-off events. [2024-06-28 03:08:05,648 INFO L125 PetriNetUnfolderBase]: For 1045306/1045308 co-relation queries the response was YES. [2024-06-28 03:08:05,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58076 conditions, 4628 events. 2869/4628 cut-off events. For 1045306/1045308 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 27571 event pairs, 505 based on Foata normal form. 3/4630 useless extension candidates. Maximal degree in co-relation 57903. Up to 3845 conditions per place. [2024-06-28 03:08:05,724 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 414 selfloop transitions, 176 changer transitions 0/595 dead transitions. [2024-06-28 03:08:05,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 595 transitions, 9393 flow [2024-06-28 03:08:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:08:05,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:08:05,725 INFO L175 Difference]: Start difference. First operand has 376 places, 565 transitions, 7109 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:08:05,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 595 transitions, 9393 flow [2024-06-28 03:08:07,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 595 transitions, 9153 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-28 03:08:07,639 INFO L231 Difference]: Finished difference. Result has 381 places, 576 transitions, 7910 flow [2024-06-28 03:08:07,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6869, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7910, PETRI_PLACES=381, PETRI_TRANSITIONS=576} [2024-06-28 03:08:07,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-28 03:08:07,640 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 576 transitions, 7910 flow [2024-06-28 03:08:07,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:07,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:07,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:07,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:08:07,641 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:07,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash 789562476, now seen corresponding path program 3 times [2024-06-28 03:08:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:07,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279981706] [2024-06-28 03:08:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279981706] [2024-06-28 03:08:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279981706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175722435] [2024-06-28 03:08:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:08,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:08,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:08,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 576 transitions, 7910 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:08,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:08,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:08,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:10,099 INFO L124 PetriNetUnfolderBase]: 2874/4639 cut-off events. [2024-06-28 03:08:10,099 INFO L125 PetriNetUnfolderBase]: For 1071436/1071442 co-relation queries the response was YES. [2024-06-28 03:08:10,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59163 conditions, 4639 events. 2874/4639 cut-off events. For 1071436/1071442 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 27690 event pairs, 535 based on Foata normal form. 7/4645 useless extension candidates. Maximal degree in co-relation 58987. Up to 4203 conditions per place. [2024-06-28 03:08:10,180 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 522 selfloop transitions, 70 changer transitions 0/597 dead transitions. [2024-06-28 03:08:10,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 597 transitions, 9340 flow [2024-06-28 03:08:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:08:10,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:08:10,181 INFO L175 Difference]: Start difference. First operand has 381 places, 576 transitions, 7910 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:08:10,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 597 transitions, 9340 flow [2024-06-28 03:08:12,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 597 transitions, 8931 flow, removed 161 selfloop flow, removed 4 redundant places. [2024-06-28 03:08:12,419 INFO L231 Difference]: Finished difference. Result has 386 places, 579 transitions, 7827 flow [2024-06-28 03:08:12,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7501, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7827, PETRI_PLACES=386, PETRI_TRANSITIONS=579} [2024-06-28 03:08:12,419 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-06-28 03:08:12,420 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 579 transitions, 7827 flow [2024-06-28 03:08:12,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:12,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:12,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:12,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:08:12,420 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:12,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1621065118, now seen corresponding path program 10 times [2024-06-28 03:08:12,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:12,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868744684] [2024-06-28 03:08:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:12,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:13,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:13,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868744684] [2024-06-28 03:08:13,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868744684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:13,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:13,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:13,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498877063] [2024-06-28 03:08:13,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:13,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:13,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:13,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:13,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:13,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 579 transitions, 7827 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:13,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:13,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:13,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:14,535 INFO L124 PetriNetUnfolderBase]: 2884/4651 cut-off events. [2024-06-28 03:08:14,536 INFO L125 PetriNetUnfolderBase]: For 1086010/1086012 co-relation queries the response was YES. [2024-06-28 03:08:14,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59028 conditions, 4651 events. 2884/4651 cut-off events. For 1086010/1086012 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 27756 event pairs, 505 based on Foata normal form. 4/4654 useless extension candidates. Maximal degree in co-relation 58851. Up to 4002 conditions per place. [2024-06-28 03:08:14,617 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 475 selfloop transitions, 123 changer transitions 0/603 dead transitions. [2024-06-28 03:08:14,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 603 transitions, 9317 flow [2024-06-28 03:08:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:14,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:14,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:08:14,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:08:14,618 INFO L175 Difference]: Start difference. First operand has 386 places, 579 transitions, 7827 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:08:14,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 603 transitions, 9317 flow [2024-06-28 03:08:16,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 603 transitions, 9013 flow, removed 84 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:16,846 INFO L231 Difference]: Finished difference. Result has 388 places, 583 transitions, 7990 flow [2024-06-28 03:08:16,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7523, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7990, PETRI_PLACES=388, PETRI_TRANSITIONS=583} [2024-06-28 03:08:16,847 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-28 03:08:16,847 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 583 transitions, 7990 flow [2024-06-28 03:08:16,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:16,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:16,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:16,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:08:16,848 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:16,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1487865004, now seen corresponding path program 11 times [2024-06-28 03:08:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:16,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858144775] [2024-06-28 03:08:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:16,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:17,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:17,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858144775] [2024-06-28 03:08:17,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858144775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:17,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:17,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942046823] [2024-06-28 03:08:17,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:17,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:17,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:17,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 583 transitions, 7990 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:17,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:17,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:17,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:19,034 INFO L124 PetriNetUnfolderBase]: 2878/4638 cut-off events. [2024-06-28 03:08:19,035 INFO L125 PetriNetUnfolderBase]: For 1085395/1085395 co-relation queries the response was YES. [2024-06-28 03:08:19,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58790 conditions, 4638 events. 2878/4638 cut-off events. For 1085395/1085395 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 27598 event pairs, 488 based on Foata normal form. 2/4639 useless extension candidates. Maximal degree in co-relation 58612. Up to 4217 conditions per place. [2024-06-28 03:08:19,111 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 527 selfloop transitions, 68 changer transitions 0/600 dead transitions. [2024-06-28 03:08:19,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 600 transitions, 9244 flow [2024-06-28 03:08:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:08:19,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:08:19,113 INFO L175 Difference]: Start difference. First operand has 388 places, 583 transitions, 7990 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:08:19,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 600 transitions, 9244 flow [2024-06-28 03:08:21,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 600 transitions, 8679 flow, removed 162 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:21,222 INFO L231 Difference]: Finished difference. Result has 390 places, 583 transitions, 7570 flow [2024-06-28 03:08:21,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7425, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7570, PETRI_PLACES=390, PETRI_TRANSITIONS=583} [2024-06-28 03:08:21,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-06-28 03:08:21,222 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 583 transitions, 7570 flow [2024-06-28 03:08:21,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:21,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:21,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:21,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:08:21,223 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:21,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:21,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1617583198, now seen corresponding path program 12 times [2024-06-28 03:08:21,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:21,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719220783] [2024-06-28 03:08:21,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:21,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:22,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:22,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719220783] [2024-06-28 03:08:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719220783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:22,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972744700] [2024-06-28 03:08:22,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:22,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:22,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:22,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 583 transitions, 7570 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:22,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:22,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:22,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:23,390 INFO L124 PetriNetUnfolderBase]: 2875/4634 cut-off events. [2024-06-28 03:08:23,391 INFO L125 PetriNetUnfolderBase]: For 1080529/1080529 co-relation queries the response was YES. [2024-06-28 03:08:23,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58110 conditions, 4634 events. 2875/4634 cut-off events. For 1080529/1080529 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 27585 event pairs, 488 based on Foata normal form. 1/4634 useless extension candidates. Maximal degree in co-relation 57931. Up to 4203 conditions per place. [2024-06-28 03:08:23,470 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 522 selfloop transitions, 74 changer transitions 0/601 dead transitions. [2024-06-28 03:08:23,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 601 transitions, 8828 flow [2024-06-28 03:08:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:08:23,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:08:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 03:08:23,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170731707317073 [2024-06-28 03:08:23,471 INFO L175 Difference]: Start difference. First operand has 390 places, 583 transitions, 7570 flow. Second operand 10 states and 171 transitions. [2024-06-28 03:08:23,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 601 transitions, 8828 flow [2024-06-28 03:08:26,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 601 transitions, 8551 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-28 03:08:26,008 INFO L231 Difference]: Finished difference. Result has 392 places, 583 transitions, 7447 flow [2024-06-28 03:08:26,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7293, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7447, PETRI_PLACES=392, PETRI_TRANSITIONS=583} [2024-06-28 03:08:26,009 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-28 03:08:26,009 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 583 transitions, 7447 flow [2024-06-28 03:08:26,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:26,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:26,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:26,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:08:26,010 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 03:08:26,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:26,010 INFO L85 PathProgramCache]: Analyzing trace with hash 796914126, now seen corresponding path program 4 times [2024-06-28 03:08:26,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:26,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377040148] [2024-06-28 03:08:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:26,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:27,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:27,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377040148] [2024-06-28 03:08:27,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377040148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:27,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:27,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:27,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123063102] [2024-06-28 03:08:27,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:27,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:27,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:27,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:27,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:27,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 583 transitions, 7447 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:27,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:27,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:27,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:28,856 INFO L124 PetriNetUnfolderBase]: 2888/4655 cut-off events. [2024-06-28 03:08:28,856 INFO L125 PetriNetUnfolderBase]: For 1106308/1106312 co-relation queries the response was YES. [2024-06-28 03:08:28,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58698 conditions, 4655 events. 2888/4655 cut-off events. For 1106308/1106312 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 27762 event pairs, 509 based on Foata normal form. 5/4657 useless extension candidates. Maximal degree in co-relation 58518. Up to 4082 conditions per place. [2024-06-28 03:08:28,939 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 478 selfloop transitions, 124 changer transitions 0/607 dead transitions. [2024-06-28 03:08:28,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 607 transitions, 9307 flow [2024-06-28 03:08:28,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:08:28,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:08:28,940 INFO L175 Difference]: Start difference. First operand has 392 places, 583 transitions, 7447 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:08:28,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 607 transitions, 9307 flow [2024-06-28 03:08:31,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 607 transitions, 9114 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:08:31,068 INFO L231 Difference]: Finished difference. Result has 392 places, 589 transitions, 7874 flow [2024-06-28 03:08:31,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7254, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7874, PETRI_PLACES=392, PETRI_TRANSITIONS=589} [2024-06-28 03:08:31,068 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-28 03:08:31,068 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 589 transitions, 7874 flow [2024-06-28 03:08:31,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:31,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:31,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:31,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:08:31,069 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 03:08:31,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash 796914343, now seen corresponding path program 4 times [2024-06-28 03:08:31,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:31,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161916867] [2024-06-28 03:08:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:31,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:31,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:31,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161916867] [2024-06-28 03:08:31,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161916867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:31,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:31,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:31,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442628951] [2024-06-28 03:08:31,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:31,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:31,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:31,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:31,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:32,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:32,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 589 transitions, 7874 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:32,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:32,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:32,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:33,250 INFO L124 PetriNetUnfolderBase]: 2898/4673 cut-off events. [2024-06-28 03:08:33,250 INFO L125 PetriNetUnfolderBase]: For 1136678/1136684 co-relation queries the response was YES. [2024-06-28 03:08:33,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59443 conditions, 4673 events. 2898/4673 cut-off events. For 1136678/1136684 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 27941 event pairs, 498 based on Foata normal form. 8/4680 useless extension candidates. Maximal degree in co-relation 59263. Up to 4148 conditions per place. [2024-06-28 03:08:33,330 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 516 selfloop transitions, 93 changer transitions 0/614 dead transitions. [2024-06-28 03:08:33,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 614 transitions, 9544 flow [2024-06-28 03:08:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:08:33,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:08:33,332 INFO L175 Difference]: Start difference. First operand has 392 places, 589 transitions, 7874 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:08:33,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 614 transitions, 9544 flow [2024-06-28 03:08:36,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 614 transitions, 9223 flow, removed 100 selfloop flow, removed 5 redundant places. [2024-06-28 03:08:36,062 INFO L231 Difference]: Finished difference. Result has 396 places, 592 transitions, 7832 flow [2024-06-28 03:08:36,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7553, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7832, PETRI_PLACES=396, PETRI_TRANSITIONS=592} [2024-06-28 03:08:36,063 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 354 predicate places. [2024-06-28 03:08:36,063 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 592 transitions, 7832 flow [2024-06-28 03:08:36,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:36,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:36,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:08:36,064 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 03:08:36,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:36,064 INFO L85 PathProgramCache]: Analyzing trace with hash 216469886, now seen corresponding path program 1 times [2024-06-28 03:08:36,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56854449] [2024-06-28 03:08:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56854449] [2024-06-28 03:08:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56854449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:36,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:36,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:36,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573701064] [2024-06-28 03:08:36,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:36,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:36,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:37,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:37,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 592 transitions, 7832 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:37,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:37,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:37,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:38,326 INFO L124 PetriNetUnfolderBase]: 2906/4682 cut-off events. [2024-06-28 03:08:38,327 INFO L125 PetriNetUnfolderBase]: For 1150269/1150273 co-relation queries the response was YES. [2024-06-28 03:08:38,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59789 conditions, 4682 events. 2906/4682 cut-off events. For 1150269/1150273 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 27901 event pairs, 394 based on Foata normal form. 6/4687 useless extension candidates. Maximal degree in co-relation 59607. Up to 4256 conditions per place. [2024-06-28 03:08:38,398 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 578 selfloop transitions, 38 changer transitions 0/621 dead transitions. [2024-06-28 03:08:38,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 621 transitions, 9246 flow [2024-06-28 03:08:38,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:08:38,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:08:38,400 INFO L175 Difference]: Start difference. First operand has 396 places, 592 transitions, 7832 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:08:38,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 621 transitions, 9246 flow [2024-06-28 03:08:41,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 621 transitions, 9035 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:08:41,061 INFO L231 Difference]: Finished difference. Result has 399 places, 594 transitions, 7788 flow [2024-06-28 03:08:41,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7788, PETRI_PLACES=399, PETRI_TRANSITIONS=594} [2024-06-28 03:08:41,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 357 predicate places. [2024-06-28 03:08:41,061 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 594 transitions, 7788 flow [2024-06-28 03:08:41,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:41,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:41,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:41,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:08:41,062 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 03:08:41,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:41,062 INFO L85 PathProgramCache]: Analyzing trace with hash 482493596, now seen corresponding path program 2 times [2024-06-28 03:08:41,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:41,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339574577] [2024-06-28 03:08:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:41,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339574577] [2024-06-28 03:08:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339574577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:41,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:41,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402222348] [2024-06-28 03:08:41,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:41,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:41,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:42,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:42,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 594 transitions, 7788 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:42,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:42,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:42,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:43,297 INFO L124 PetriNetUnfolderBase]: 2914/4694 cut-off events. [2024-06-28 03:08:43,298 INFO L125 PetriNetUnfolderBase]: For 1164620/1164624 co-relation queries the response was YES. [2024-06-28 03:08:43,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59985 conditions, 4694 events. 2914/4694 cut-off events. For 1164620/1164624 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 28052 event pairs, 486 based on Foata normal form. 6/4699 useless extension candidates. Maximal degree in co-relation 59802. Up to 4306 conditions per place. [2024-06-28 03:08:43,374 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 567 selfloop transitions, 46 changer transitions 0/618 dead transitions. [2024-06-28 03:08:43,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 618 transitions, 9180 flow [2024-06-28 03:08:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:08:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:08:43,375 INFO L175 Difference]: Start difference. First operand has 399 places, 594 transitions, 7788 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:08:43,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 618 transitions, 9180 flow [2024-06-28 03:08:46,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 618 transitions, 9029 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:46,436 INFO L231 Difference]: Finished difference. Result has 401 places, 596 transitions, 7824 flow [2024-06-28 03:08:46,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7637, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7824, PETRI_PLACES=401, PETRI_TRANSITIONS=596} [2024-06-28 03:08:46,437 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-28 03:08:46,437 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 596 transitions, 7824 flow [2024-06-28 03:08:46,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:46,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:46,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:46,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:08:46,438 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 03:08:46,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash 482167166, now seen corresponding path program 3 times [2024-06-28 03:08:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:46,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196527275] [2024-06-28 03:08:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:47,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:47,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196527275] [2024-06-28 03:08:47,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196527275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:47,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:47,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:47,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466178416] [2024-06-28 03:08:47,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:47,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:47,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:47,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:47,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 596 transitions, 7824 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:47,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:47,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:47,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:48,749 INFO L124 PetriNetUnfolderBase]: 2922/4706 cut-off events. [2024-06-28 03:08:48,750 INFO L125 PetriNetUnfolderBase]: For 1182940/1182944 co-relation queries the response was YES. [2024-06-28 03:08:48,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60278 conditions, 4706 events. 2922/4706 cut-off events. For 1182940/1182944 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 28099 event pairs, 484 based on Foata normal form. 6/4711 useless extension candidates. Maximal degree in co-relation 60094. Up to 4313 conditions per place. [2024-06-28 03:08:48,828 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 571 selfloop transitions, 45 changer transitions 0/621 dead transitions. [2024-06-28 03:08:48,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 621 transitions, 9228 flow [2024-06-28 03:08:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:08:48,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:08:48,830 INFO L175 Difference]: Start difference. First operand has 401 places, 596 transitions, 7824 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:08:48,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 621 transitions, 9228 flow [2024-06-28 03:08:51,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 621 transitions, 9047 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:51,776 INFO L231 Difference]: Finished difference. Result has 403 places, 598 transitions, 7832 flow [2024-06-28 03:08:51,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7643, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7832, PETRI_PLACES=403, PETRI_TRANSITIONS=598} [2024-06-28 03:08:51,777 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 361 predicate places. [2024-06-28 03:08:51,777 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 598 transitions, 7832 flow [2024-06-28 03:08:51,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:51,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:51,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:51,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:08:51,778 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:51,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:51,778 INFO L85 PathProgramCache]: Analyzing trace with hash 883166392, now seen corresponding path program 4 times [2024-06-28 03:08:51,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:51,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888527326] [2024-06-28 03:08:51,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:51,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:52,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:52,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888527326] [2024-06-28 03:08:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888527326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:52,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:52,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099194375] [2024-06-28 03:08:52,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:52,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:52,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:52,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:52,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 598 transitions, 7832 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:52,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:52,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:52,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:54,102 INFO L124 PetriNetUnfolderBase]: 2930/4714 cut-off events. [2024-06-28 03:08:54,102 INFO L125 PetriNetUnfolderBase]: For 1198479/1198479 co-relation queries the response was YES. [2024-06-28 03:08:54,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60557 conditions, 4714 events. 2930/4714 cut-off events. For 1198479/1198479 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 28143 event pairs, 490 based on Foata normal form. 2/4715 useless extension candidates. Maximal degree in co-relation 60372. Up to 4312 conditions per place. [2024-06-28 03:08:54,181 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 552 selfloop transitions, 60 changer transitions 0/617 dead transitions. [2024-06-28 03:08:54,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 617 transitions, 9208 flow [2024-06-28 03:08:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:08:54,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:08:54,182 INFO L175 Difference]: Start difference. First operand has 403 places, 598 transitions, 7832 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:08:54,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 617 transitions, 9208 flow [2024-06-28 03:08:57,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 617 transitions, 9035 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:57,209 INFO L231 Difference]: Finished difference. Result has 405 places, 600 transitions, 7882 flow [2024-06-28 03:08:57,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7659, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7882, PETRI_PLACES=405, PETRI_TRANSITIONS=600} [2024-06-28 03:08:57,209 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-28 03:08:57,210 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 600 transitions, 7882 flow [2024-06-28 03:08:57,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:57,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:57,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:57,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:08:57,210 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:57,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash 785739804, now seen corresponding path program 5 times [2024-06-28 03:08:57,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:57,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201438402] [2024-06-28 03:08:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:57,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:58,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:58,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201438402] [2024-06-28 03:08:58,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201438402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:58,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:58,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:58,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274428544] [2024-06-28 03:08:58,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:58,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:58,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:58,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:58,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:08:58,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 600 transitions, 7882 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:58,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:58,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:08:58,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:59,532 INFO L124 PetriNetUnfolderBase]: 2938/4726 cut-off events. [2024-06-28 03:08:59,532 INFO L125 PetriNetUnfolderBase]: For 1214206/1214206 co-relation queries the response was YES. [2024-06-28 03:08:59,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60865 conditions, 4726 events. 2938/4726 cut-off events. For 1214206/1214206 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 28187 event pairs, 488 based on Foata normal form. 2/4727 useless extension candidates. Maximal degree in co-relation 60679. Up to 4319 conditions per place. [2024-06-28 03:08:59,612 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 556 selfloop transitions, 59 changer transitions 0/620 dead transitions. [2024-06-28 03:08:59,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 620 transitions, 9270 flow [2024-06-28 03:08:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 03:08:59,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-28 03:08:59,613 INFO L175 Difference]: Start difference. First operand has 405 places, 600 transitions, 7882 flow. Second operand 9 states and 154 transitions. [2024-06-28 03:08:59,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 620 transitions, 9270 flow [2024-06-28 03:09:02,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 620 transitions, 9056 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:02,582 INFO L231 Difference]: Finished difference. Result has 407 places, 602 transitions, 7893 flow [2024-06-28 03:09:02,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7668, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7893, PETRI_PLACES=407, PETRI_TRANSITIONS=602} [2024-06-28 03:09:02,583 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 365 predicate places. [2024-06-28 03:09:02,583 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 602 transitions, 7893 flow [2024-06-28 03:09:02,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:02,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:02,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:09:02,584 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:02,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:02,593 INFO L85 PathProgramCache]: Analyzing trace with hash 796790994, now seen corresponding path program 6 times [2024-06-28 03:09:02,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:02,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017445999] [2024-06-28 03:09:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:02,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:03,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:03,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017445999] [2024-06-28 03:09:03,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017445999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:03,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:03,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:03,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363413483] [2024-06-28 03:09:03,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:03,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:03,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:03,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:03,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 602 transitions, 7893 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:03,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:03,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:03,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:04,964 INFO L124 PetriNetUnfolderBase]: 2946/4738 cut-off events. [2024-06-28 03:09:04,964 INFO L125 PetriNetUnfolderBase]: For 1230299/1230299 co-relation queries the response was YES. [2024-06-28 03:09:05,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61144 conditions, 4738 events. 2946/4738 cut-off events. For 1230299/1230299 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 28275 event pairs, 490 based on Foata normal form. 2/4739 useless extension candidates. Maximal degree in co-relation 60957. Up to 4319 conditions per place. [2024-06-28 03:09:05,049 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 550 selfloop transitions, 66 changer transitions 0/621 dead transitions. [2024-06-28 03:09:05,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 621 transitions, 9285 flow [2024-06-28 03:09:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:09:05,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:09:05,050 INFO L175 Difference]: Start difference. First operand has 407 places, 602 transitions, 7893 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:09:05,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 621 transitions, 9285 flow [2024-06-28 03:09:08,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 621 transitions, 9076 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:08,319 INFO L231 Difference]: Finished difference. Result has 409 places, 604 transitions, 7927 flow [2024-06-28 03:09:08,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7684, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7927, PETRI_PLACES=409, PETRI_TRANSITIONS=604} [2024-06-28 03:09:08,320 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-06-28 03:09:08,320 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 604 transitions, 7927 flow [2024-06-28 03:09:08,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:08,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:08,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:08,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:09:08,320 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:08,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:08,321 INFO L85 PathProgramCache]: Analyzing trace with hash 797191173, now seen corresponding path program 1 times [2024-06-28 03:09:08,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257903811] [2024-06-28 03:09:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:08,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:09,310 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 03:09:09,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:09,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257903811] [2024-06-28 03:09:09,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257903811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:09,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:09,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:09,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139261849] [2024-06-28 03:09:09,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:09,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:09,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:09,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:09,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-28 03:09:09,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 604 transitions, 7927 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:09,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:09,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-28 03:09:09,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:10,806 INFO L124 PetriNetUnfolderBase]: 2843/4617 cut-off events. [2024-06-28 03:09:10,806 INFO L125 PetriNetUnfolderBase]: For 1323980/1323999 co-relation queries the response was YES. [2024-06-28 03:09:10,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60757 conditions, 4617 events. 2843/4617 cut-off events. For 1323980/1323999 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 27985 event pairs, 465 based on Foata normal form. 27/4619 useless extension candidates. Maximal degree in co-relation 60569. Up to 3913 conditions per place. [2024-06-28 03:09:10,880 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 482 selfloop transitions, 72 changer transitions 0/627 dead transitions. [2024-06-28 03:09:10,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 627 transitions, 9258 flow [2024-06-28 03:09:10,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:09:10,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:09:10,881 INFO L175 Difference]: Start difference. First operand has 409 places, 604 transitions, 7927 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:09:10,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 627 transitions, 9258 flow [2024-06-28 03:09:13,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 627 transitions, 9031 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:13,135 INFO L231 Difference]: Finished difference. Result has 411 places, 605 transitions, 7907 flow [2024-06-28 03:09:13,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7700, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7907, PETRI_PLACES=411, PETRI_TRANSITIONS=605} [2024-06-28 03:09:13,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-28 03:09:13,135 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 605 transitions, 7907 flow [2024-06-28 03:09:13,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:13,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:13,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:13,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:09:13,136 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:13,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash 252820704, now seen corresponding path program 5 times [2024-06-28 03:09:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:13,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549580624] [2024-06-28 03:09:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:13,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:13,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549580624] [2024-06-28 03:09:13,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549580624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:13,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:13,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:13,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852470320] [2024-06-28 03:09:13,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:13,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:13,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:13,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:14,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:14,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 605 transitions, 7907 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:14,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:14,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:14,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:15,569 INFO L124 PetriNetUnfolderBase]: 2995/4817 cut-off events. [2024-06-28 03:09:15,570 INFO L125 PetriNetUnfolderBase]: For 1266170/1266170 co-relation queries the response was YES. [2024-06-28 03:09:15,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62533 conditions, 4817 events. 2995/4817 cut-off events. For 1266170/1266170 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 28790 event pairs, 502 based on Foata normal form. 1/4817 useless extension candidates. Maximal degree in co-relation 62344. Up to 4180 conditions per place. [2024-06-28 03:09:15,663 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 520 selfloop transitions, 106 changer transitions 0/631 dead transitions. [2024-06-28 03:09:15,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 631 transitions, 9486 flow [2024-06-28 03:09:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:09:15,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:09:15,665 INFO L175 Difference]: Start difference. First operand has 411 places, 605 transitions, 7907 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:09:15,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 631 transitions, 9486 flow [2024-06-28 03:09:18,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 631 transitions, 9317 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:18,846 INFO L231 Difference]: Finished difference. Result has 413 places, 608 transitions, 8192 flow [2024-06-28 03:09:18,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7738, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8192, PETRI_PLACES=413, PETRI_TRANSITIONS=608} [2024-06-28 03:09:18,847 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 371 predicate places. [2024-06-28 03:09:18,847 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 608 transitions, 8192 flow [2024-06-28 03:09:18,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:18,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:18,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:18,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:09:18,848 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:18,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash 770001892, now seen corresponding path program 5 times [2024-06-28 03:09:18,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:18,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922864667] [2024-06-28 03:09:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:18,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:20,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922864667] [2024-06-28 03:09:20,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922864667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:20,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:20,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125158159] [2024-06-28 03:09:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:20,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:20,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:20,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:20,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:20,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 608 transitions, 8192 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:20,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:20,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:20,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:21,479 INFO L124 PetriNetUnfolderBase]: 3000/4827 cut-off events. [2024-06-28 03:09:21,479 INFO L125 PetriNetUnfolderBase]: For 1288186/1288192 co-relation queries the response was YES. [2024-06-28 03:09:21,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63007 conditions, 4827 events. 3000/4827 cut-off events. For 1288186/1288192 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 28943 event pairs, 535 based on Foata normal form. 7/4833 useless extension candidates. Maximal degree in co-relation 62817. Up to 4380 conditions per place. [2024-06-28 03:09:21,564 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 556 selfloop transitions, 70 changer transitions 0/631 dead transitions. [2024-06-28 03:09:21,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 631 transitions, 9685 flow [2024-06-28 03:09:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:09:21,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:09:21,565 INFO L175 Difference]: Start difference. First operand has 413 places, 608 transitions, 8192 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:09:21,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 631 transitions, 9685 flow [2024-06-28 03:09:25,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 631 transitions, 9250 flow, removed 112 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:25,050 INFO L231 Difference]: Finished difference. Result has 415 places, 611 transitions, 8069 flow [2024-06-28 03:09:25,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7757, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8069, PETRI_PLACES=415, PETRI_TRANSITIONS=611} [2024-06-28 03:09:25,051 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 373 predicate places. [2024-06-28 03:09:25,051 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 611 transitions, 8069 flow [2024-06-28 03:09:25,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:25,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:25,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:25,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:09:25,052 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:25,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:25,052 INFO L85 PathProgramCache]: Analyzing trace with hash -601539792, now seen corresponding path program 6 times [2024-06-28 03:09:25,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:25,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896596590] [2024-06-28 03:09:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:25,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:25,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:25,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:25,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896596590] [2024-06-28 03:09:25,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896596590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:25,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:25,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:25,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340365313] [2024-06-28 03:09:25,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:25,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:25,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:26,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:26,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 611 transitions, 8069 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:26,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:26,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:26,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:27,471 INFO L124 PetriNetUnfolderBase]: 3005/4833 cut-off events. [2024-06-28 03:09:27,472 INFO L125 PetriNetUnfolderBase]: For 1303950/1303950 co-relation queries the response was YES. [2024-06-28 03:09:27,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63035 conditions, 4833 events. 3005/4833 cut-off events. For 1303950/1303950 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 28947 event pairs, 502 based on Foata normal form. 1/4833 useless extension candidates. Maximal degree in co-relation 62844. Up to 4186 conditions per place. [2024-06-28 03:09:27,554 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 520 selfloop transitions, 110 changer transitions 0/635 dead transitions. [2024-06-28 03:09:27,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 635 transitions, 9656 flow [2024-06-28 03:09:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:09:27,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 03:09:27,555 INFO L175 Difference]: Start difference. First operand has 415 places, 611 transitions, 8069 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:09:27,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 635 transitions, 9656 flow [2024-06-28 03:09:31,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 635 transitions, 9372 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:31,095 INFO L231 Difference]: Finished difference. Result has 417 places, 614 transitions, 8253 flow [2024-06-28 03:09:31,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7785, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8253, PETRI_PLACES=417, PETRI_TRANSITIONS=614} [2024-06-28 03:09:31,096 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 375 predicate places. [2024-06-28 03:09:31,096 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 614 transitions, 8253 flow [2024-06-28 03:09:31,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:31,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:31,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:31,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:09:31,097 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:31,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:31,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1124264560, now seen corresponding path program 7 times [2024-06-28 03:09:31,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:31,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923769225] [2024-06-28 03:09:31,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:31,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:32,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:32,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923769225] [2024-06-28 03:09:32,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923769225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:32,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:32,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:32,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28975529] [2024-06-28 03:09:32,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:32,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:32,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:32,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:32,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:32,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 614 transitions, 8253 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:32,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:32,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:32,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:33,486 INFO L124 PetriNetUnfolderBase]: 3010/4840 cut-off events. [2024-06-28 03:09:33,486 INFO L125 PetriNetUnfolderBase]: For 1333512/1333512 co-relation queries the response was YES. [2024-06-28 03:09:33,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63777 conditions, 4840 events. 3010/4840 cut-off events. For 1333512/1333512 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 28995 event pairs, 502 based on Foata normal form. 1/4840 useless extension candidates. Maximal degree in co-relation 63585. Up to 4138 conditions per place. [2024-06-28 03:09:33,569 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 490 selfloop transitions, 143 changer transitions 0/638 dead transitions. [2024-06-28 03:09:33,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 638 transitions, 10325 flow [2024-06-28 03:09:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:09:33,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:09:33,571 INFO L175 Difference]: Start difference. First operand has 417 places, 614 transitions, 8253 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:09:33,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 638 transitions, 10325 flow [2024-06-28 03:09:36,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 638 transitions, 9879 flow, removed 115 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:36,960 INFO L231 Difference]: Finished difference. Result has 419 places, 620 transitions, 8589 flow [2024-06-28 03:09:36,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7807, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8589, PETRI_PLACES=419, PETRI_TRANSITIONS=620} [2024-06-28 03:09:36,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-28 03:09:36,960 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 620 transitions, 8589 flow [2024-06-28 03:09:36,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:36,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:36,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:36,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:09:36,961 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:36,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:36,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1795850062, now seen corresponding path program 6 times [2024-06-28 03:09:36,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:36,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297373384] [2024-06-28 03:09:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:36,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:38,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:38,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297373384] [2024-06-28 03:09:38,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297373384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:38,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:38,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:38,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092530358] [2024-06-28 03:09:38,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:38,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:38,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:38,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:38,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:38,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:38,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 620 transitions, 8589 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:38,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:38,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:38,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:39,449 INFO L124 PetriNetUnfolderBase]: 3015/4850 cut-off events. [2024-06-28 03:09:39,449 INFO L125 PetriNetUnfolderBase]: For 1359285/1359291 co-relation queries the response was YES. [2024-06-28 03:09:39,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64315 conditions, 4850 events. 3015/4850 cut-off events. For 1359285/1359291 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 29063 event pairs, 499 based on Foata normal form. 7/4856 useless extension candidates. Maximal degree in co-relation 64122. Up to 4379 conditions per place. [2024-06-28 03:09:39,532 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 548 selfloop transitions, 87 changer transitions 0/640 dead transitions. [2024-06-28 03:09:39,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 640 transitions, 10129 flow [2024-06-28 03:09:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:39,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:09:39,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:09:39,534 INFO L175 Difference]: Start difference. First operand has 419 places, 620 transitions, 8589 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:09:39,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 640 transitions, 10129 flow [2024-06-28 03:09:43,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 640 transitions, 9717 flow, removed 143 selfloop flow, removed 5 redundant places. [2024-06-28 03:09:43,310 INFO L231 Difference]: Finished difference. Result has 423 places, 623 transitions, 8567 flow [2024-06-28 03:09:43,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8179, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8567, PETRI_PLACES=423, PETRI_TRANSITIONS=623} [2024-06-28 03:09:43,310 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-28 03:09:43,311 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 623 transitions, 8567 flow [2024-06-28 03:09:43,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:43,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:43,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:43,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:09:43,311 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:43,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1124680642, now seen corresponding path program 7 times [2024-06-28 03:09:43,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:43,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928960395] [2024-06-28 03:09:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:43,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:44,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:44,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928960395] [2024-06-28 03:09:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928960395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:44,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:44,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107400559] [2024-06-28 03:09:44,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:44,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:44,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:44,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:44,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 623 transitions, 8567 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:44,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:44,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:44,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:45,752 INFO L124 PetriNetUnfolderBase]: 3028/4872 cut-off events. [2024-06-28 03:09:45,752 INFO L125 PetriNetUnfolderBase]: For 1379436/1379442 co-relation queries the response was YES. [2024-06-28 03:09:45,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64874 conditions, 4872 events. 3028/4872 cut-off events. For 1379436/1379442 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 29329 event pairs, 499 based on Foata normal form. 7/4878 useless extension candidates. Maximal degree in co-relation 64679. Up to 4377 conditions per place. [2024-06-28 03:09:45,841 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 544 selfloop transitions, 101 changer transitions 0/650 dead transitions. [2024-06-28 03:09:45,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 650 transitions, 10625 flow [2024-06-28 03:09:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:45,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:09:45,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:09:45,842 INFO L175 Difference]: Start difference. First operand has 423 places, 623 transitions, 8567 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:09:45,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 650 transitions, 10625 flow [2024-06-28 03:09:48,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 650 transitions, 10259 flow, removed 98 selfloop flow, removed 7 redundant places. [2024-06-28 03:09:48,905 INFO L231 Difference]: Finished difference. Result has 426 places, 632 transitions, 8889 flow [2024-06-28 03:09:48,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8201, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8889, PETRI_PLACES=426, PETRI_TRANSITIONS=632} [2024-06-28 03:09:48,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2024-06-28 03:09:48,905 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 632 transitions, 8889 flow [2024-06-28 03:09:48,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:48,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:48,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:48,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:09:48,906 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:48,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1493943988, now seen corresponding path program 8 times [2024-06-28 03:09:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:48,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84944495] [2024-06-28 03:09:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:48,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:49,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84944495] [2024-06-28 03:09:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84944495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:49,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:49,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:09:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196046980] [2024-06-28 03:09:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:09:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:49,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:09:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:09:49,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:49,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 632 transitions, 8889 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:49,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:49,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:49,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:51,192 INFO L124 PetriNetUnfolderBase]: 3044/4897 cut-off events. [2024-06-28 03:09:51,192 INFO L125 PetriNetUnfolderBase]: For 1405478/1405478 co-relation queries the response was YES. [2024-06-28 03:09:51,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65523 conditions, 4897 events. 3044/4897 cut-off events. For 1405478/1405478 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 29470 event pairs, 502 based on Foata normal form. 1/4897 useless extension candidates. Maximal degree in co-relation 65326. Up to 4245 conditions per place. [2024-06-28 03:09:51,282 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 558 selfloop transitions, 101 changer transitions 0/664 dead transitions. [2024-06-28 03:09:51,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 664 transitions, 10571 flow [2024-06-28 03:09:51,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:51,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:09:51,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-28 03:09:51,284 INFO L175 Difference]: Start difference. First operand has 426 places, 632 transitions, 8889 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:09:51,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 664 transitions, 10571 flow [2024-06-28 03:09:55,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 664 transitions, 10228 flow, removed 119 selfloop flow, removed 5 redundant places. [2024-06-28 03:09:55,280 INFO L231 Difference]: Finished difference. Result has 430 places, 638 transitions, 8998 flow [2024-06-28 03:09:55,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8546, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8998, PETRI_PLACES=430, PETRI_TRANSITIONS=638} [2024-06-28 03:09:55,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2024-06-28 03:09:55,281 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 638 transitions, 8998 flow [2024-06-28 03:09:55,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:55,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:55,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:55,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:09:55,282 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:09:55,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:55,282 INFO L85 PathProgramCache]: Analyzing trace with hash -541778204, now seen corresponding path program 9 times [2024-06-28 03:09:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:55,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982805816] [2024-06-28 03:09:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:55,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:56,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982805816] [2024-06-28 03:09:56,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982805816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:56,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:56,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:09:56,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986466743] [2024-06-28 03:09:56,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:56,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:09:56,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:56,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:09:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:09:56,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:09:56,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 638 transitions, 8998 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:56,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:56,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:09:56,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:57,730 INFO L124 PetriNetUnfolderBase]: 3049/4906 cut-off events. [2024-06-28 03:09:57,731 INFO L125 PetriNetUnfolderBase]: For 1421519/1421519 co-relation queries the response was YES. [2024-06-28 03:09:57,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65910 conditions, 4906 events. 3049/4906 cut-off events. For 1421519/1421519 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 29482 event pairs, 502 based on Foata normal form. 1/4906 useless extension candidates. Maximal degree in co-relation 65711. Up to 4252 conditions per place. [2024-06-28 03:09:57,819 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 557 selfloop transitions, 103 changer transitions 0/665 dead transitions. [2024-06-28 03:09:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 665 transitions, 10637 flow [2024-06-28 03:09:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:09:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:09:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:09:57,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-28 03:09:57,820 INFO L175 Difference]: Start difference. First operand has 430 places, 638 transitions, 8998 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:09:57,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 665 transitions, 10637 flow [2024-06-28 03:10:01,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 665 transitions, 10249 flow, removed 97 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:01,037 INFO L231 Difference]: Finished difference. Result has 433 places, 641 transitions, 9040 flow [2024-06-28 03:10:01,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8610, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9040, PETRI_PLACES=433, PETRI_TRANSITIONS=641} [2024-06-28 03:10:01,038 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-28 03:10:01,038 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 641 transitions, 9040 flow [2024-06-28 03:10:01,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:01,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:01,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:01,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:10:01,039 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:01,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash 580776588, now seen corresponding path program 8 times [2024-06-28 03:10:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539319060] [2024-06-28 03:10:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:02,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:02,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539319060] [2024-06-28 03:10:02,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539319060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:02,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:02,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:02,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188014196] [2024-06-28 03:10:02,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:02,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:02,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:02,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:02,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 641 transitions, 9040 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:02,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:02,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:02,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:03,739 INFO L124 PetriNetUnfolderBase]: 3046/4905 cut-off events. [2024-06-28 03:10:03,739 INFO L125 PetriNetUnfolderBase]: For 1426707/1426713 co-relation queries the response was YES. [2024-06-28 03:10:03,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65672 conditions, 4905 events. 3046/4905 cut-off events. For 1426707/1426713 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 29615 event pairs, 499 based on Foata normal form. 7/4911 useless extension candidates. Maximal degree in co-relation 65472. Up to 4445 conditions per place. [2024-06-28 03:10:03,828 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 592 selfloop transitions, 65 changer transitions 0/662 dead transitions. [2024-06-28 03:10:03,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 662 transitions, 10444 flow [2024-06-28 03:10:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:10:03,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:10:03,829 INFO L175 Difference]: Start difference. First operand has 433 places, 641 transitions, 9040 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:10:03,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 662 transitions, 10444 flow [2024-06-28 03:10:07,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 662 transitions, 9861 flow, removed 178 selfloop flow, removed 8 redundant places. [2024-06-28 03:10:07,036 INFO L231 Difference]: Finished difference. Result has 434 places, 641 transitions, 8593 flow [2024-06-28 03:10:07,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8457, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8593, PETRI_PLACES=434, PETRI_TRANSITIONS=641} [2024-06-28 03:10:07,037 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-06-28 03:10:07,037 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 641 transitions, 8593 flow [2024-06-28 03:10:07,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:07,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:07,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:07,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:10:07,037 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:07,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1999966834, now seen corresponding path program 10 times [2024-06-28 03:10:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:07,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485422568] [2024-06-28 03:10:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:07,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:07,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:07,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485422568] [2024-06-28 03:10:07,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485422568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:07,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:07,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5546619] [2024-06-28 03:10:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:07,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:07,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:07,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 641 transitions, 8593 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:07,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:07,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:07,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:09,369 INFO L124 PetriNetUnfolderBase]: 3043/4898 cut-off events. [2024-06-28 03:10:09,369 INFO L125 PetriNetUnfolderBase]: For 1428390/1428390 co-relation queries the response was YES. [2024-06-28 03:10:09,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65034 conditions, 4898 events. 3043/4898 cut-off events. For 1428390/1428390 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 29519 event pairs, 502 based on Foata normal form. 1/4898 useless extension candidates. Maximal degree in co-relation 64833. Up to 4233 conditions per place. [2024-06-28 03:10:09,457 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 551 selfloop transitions, 108 changer transitions 0/664 dead transitions. [2024-06-28 03:10:09,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 664 transitions, 10021 flow [2024-06-28 03:10:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:09,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:10:09,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:10:09,458 INFO L175 Difference]: Start difference. First operand has 434 places, 641 transitions, 8593 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:10:09,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 664 transitions, 10021 flow [2024-06-28 03:10:12,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 664 transitions, 9881 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:12,998 INFO L231 Difference]: Finished difference. Result has 436 places, 641 transitions, 8675 flow [2024-06-28 03:10:12,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8453, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8675, PETRI_PLACES=436, PETRI_TRANSITIONS=641} [2024-06-28 03:10:12,998 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-28 03:10:12,999 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 641 transitions, 8675 flow [2024-06-28 03:10:12,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:12,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:12,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:12,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:10:12,999 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:12,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:13,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2005507588, now seen corresponding path program 13 times [2024-06-28 03:10:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:13,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364136338] [2024-06-28 03:10:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:13,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:13,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:13,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364136338] [2024-06-28 03:10:13,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364136338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:13,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:13,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768212514] [2024-06-28 03:10:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:13,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:13,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:13,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 641 transitions, 8675 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:13,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:13,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:13,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:15,302 INFO L124 PetriNetUnfolderBase]: 3053/4912 cut-off events. [2024-06-28 03:10:15,302 INFO L125 PetriNetUnfolderBase]: For 1458118/1458118 co-relation queries the response was YES. [2024-06-28 03:10:15,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65643 conditions, 4912 events. 3053/4912 cut-off events. For 1458118/1458118 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 29563 event pairs, 538 based on Foata normal form. 2/4913 useless extension candidates. Maximal degree in co-relation 65441. Up to 4408 conditions per place. [2024-06-28 03:10:15,392 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 593 selfloop transitions, 68 changer transitions 0/666 dead transitions. [2024-06-28 03:10:15,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 666 transitions, 10309 flow [2024-06-28 03:10:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:10:15,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:10:15,393 INFO L175 Difference]: Start difference. First operand has 436 places, 641 transitions, 8675 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:10:15,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 666 transitions, 10309 flow [2024-06-28 03:10:19,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 666 transitions, 9738 flow, removed 103 selfloop flow, removed 9 redundant places. [2024-06-28 03:10:19,087 INFO L231 Difference]: Finished difference. Result has 436 places, 645 transitions, 8477 flow [2024-06-28 03:10:19,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8104, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8477, PETRI_PLACES=436, PETRI_TRANSITIONS=645} [2024-06-28 03:10:19,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-28 03:10:19,088 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 645 transitions, 8477 flow [2024-06-28 03:10:19,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:19,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:19,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:19,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:10:19,088 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:19,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1996253158, now seen corresponding path program 14 times [2024-06-28 03:10:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449108968] [2024-06-28 03:10:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:19,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449108968] [2024-06-28 03:10:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449108968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:19,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:19,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203727126] [2024-06-28 03:10:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:19,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:20,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:20,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 645 transitions, 8477 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:20,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:20,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:20,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:21,473 INFO L124 PetriNetUnfolderBase]: 3063/4930 cut-off events. [2024-06-28 03:10:21,473 INFO L125 PetriNetUnfolderBase]: For 1474941/1474941 co-relation queries the response was YES. [2024-06-28 03:10:21,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65526 conditions, 4930 events. 3063/4930 cut-off events. For 1474941/1474941 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 29704 event pairs, 502 based on Foata normal form. 2/4931 useless extension candidates. Maximal degree in co-relation 65324. Up to 4406 conditions per place. [2024-06-28 03:10:21,565 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 593 selfloop transitions, 72 changer transitions 0/670 dead transitions. [2024-06-28 03:10:21,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 670 transitions, 10137 flow [2024-06-28 03:10:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:10:21,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:10:21,566 INFO L175 Difference]: Start difference. First operand has 436 places, 645 transitions, 8477 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:10:21,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 670 transitions, 10137 flow [2024-06-28 03:10:25,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 670 transitions, 9804 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:25,100 INFO L231 Difference]: Finished difference. Result has 438 places, 649 transitions, 8533 flow [2024-06-28 03:10:25,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8144, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8533, PETRI_PLACES=438, PETRI_TRANSITIONS=649} [2024-06-28 03:10:25,101 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 396 predicate places. [2024-06-28 03:10:25,101 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 649 transitions, 8533 flow [2024-06-28 03:10:25,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:25,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:25,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:25,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:10:25,102 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:25,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:25,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1996241595, now seen corresponding path program 5 times [2024-06-28 03:10:25,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:25,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692678088] [2024-06-28 03:10:25,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:25,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:25,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:25,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692678088] [2024-06-28 03:10:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692678088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:25,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:25,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:25,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999751698] [2024-06-28 03:10:25,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:25,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:26,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:26,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 649 transitions, 8533 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:26,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:26,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:26,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:27,521 INFO L124 PetriNetUnfolderBase]: 3057/4925 cut-off events. [2024-06-28 03:10:27,521 INFO L125 PetriNetUnfolderBase]: For 1470341/1470347 co-relation queries the response was YES. [2024-06-28 03:10:27,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65025 conditions, 4925 events. 3057/4925 cut-off events. For 1470341/1470347 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 29738 event pairs, 499 based on Foata normal form. 8/4932 useless extension candidates. Maximal degree in co-relation 64822. Up to 4514 conditions per place. [2024-06-28 03:10:27,613 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 617 selfloop transitions, 49 changer transitions 0/671 dead transitions. [2024-06-28 03:10:27,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 671 transitions, 10103 flow [2024-06-28 03:10:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:27,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:10:27,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:10:27,614 INFO L175 Difference]: Start difference. First operand has 438 places, 649 transitions, 8533 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:10:27,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 671 transitions, 10103 flow [2024-06-28 03:10:31,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 671 transitions, 9754 flow, removed 105 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:31,261 INFO L231 Difference]: Finished difference. Result has 440 places, 653 transitions, 8461 flow [2024-06-28 03:10:31,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8184, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8461, PETRI_PLACES=440, PETRI_TRANSITIONS=653} [2024-06-28 03:10:31,262 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 398 predicate places. [2024-06-28 03:10:31,262 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 653 transitions, 8461 flow [2024-06-28 03:10:31,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:31,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:31,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:31,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:10:31,263 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:31,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:31,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1996241998, now seen corresponding path program 15 times [2024-06-28 03:10:31,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:31,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157592635] [2024-06-28 03:10:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:31,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157592635] [2024-06-28 03:10:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157592635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:32,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:32,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724062293] [2024-06-28 03:10:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:32,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:32,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:32,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 653 transitions, 8461 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:32,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:32,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:32,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:33,553 INFO L124 PetriNetUnfolderBase]: 3051/4914 cut-off events. [2024-06-28 03:10:33,553 INFO L125 PetriNetUnfolderBase]: For 1462345/1462345 co-relation queries the response was YES. [2024-06-28 03:10:33,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64405 conditions, 4914 events. 3051/4914 cut-off events. For 1462345/1462345 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 29707 event pairs, 502 based on Foata normal form. 2/4915 useless extension candidates. Maximal degree in co-relation 64201. Up to 4372 conditions per place. [2024-06-28 03:10:33,642 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 585 selfloop transitions, 83 changer transitions 0/673 dead transitions. [2024-06-28 03:10:33,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 673 transitions, 9889 flow [2024-06-28 03:10:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:10:33,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:10:33,644 INFO L175 Difference]: Start difference. First operand has 440 places, 653 transitions, 8461 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:10:33,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 673 transitions, 9889 flow [2024-06-28 03:10:37,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 673 transitions, 9538 flow, removed 129 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:37,530 INFO L231 Difference]: Finished difference. Result has 442 places, 653 transitions, 8283 flow [2024-06-28 03:10:37,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8110, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8283, PETRI_PLACES=442, PETRI_TRANSITIONS=653} [2024-06-28 03:10:37,531 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 400 predicate places. [2024-06-28 03:10:37,531 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 653 transitions, 8283 flow [2024-06-28 03:10:37,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:37,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:37,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:37,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:10:37,531 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:37,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1497967540, now seen corresponding path program 9 times [2024-06-28 03:10:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629428744] [2024-06-28 03:10:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:38,658 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 03:10:38,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:38,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629428744] [2024-06-28 03:10:38,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629428744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:38,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:38,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:38,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854478231] [2024-06-28 03:10:38,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:38,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:38,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:38,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:38,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:38,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:38,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 653 transitions, 8283 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:38,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:38,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:38,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:40,203 INFO L124 PetriNetUnfolderBase]: 3048/4913 cut-off events. [2024-06-28 03:10:40,203 INFO L125 PetriNetUnfolderBase]: For 1454918/1454924 co-relation queries the response was YES. [2024-06-28 03:10:40,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64093 conditions, 4913 events. 3048/4913 cut-off events. For 1454918/1454924 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 29683 event pairs, 499 based on Foata normal form. 7/4919 useless extension candidates. Maximal degree in co-relation 63888. Up to 4505 conditions per place. [2024-06-28 03:10:40,304 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 618 selfloop transitions, 48 changer transitions 0/671 dead transitions. [2024-06-28 03:10:40,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 671 transitions, 9689 flow [2024-06-28 03:10:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:10:40,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:10:40,305 INFO L175 Difference]: Start difference. First operand has 442 places, 653 transitions, 8283 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:10:40,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 671 transitions, 9689 flow [2024-06-28 03:10:44,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 671 transitions, 9223 flow, removed 97 selfloop flow, removed 9 redundant places. [2024-06-28 03:10:44,115 INFO L231 Difference]: Finished difference. Result has 442 places, 653 transitions, 7919 flow [2024-06-28 03:10:44,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7817, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7919, PETRI_PLACES=442, PETRI_TRANSITIONS=653} [2024-06-28 03:10:44,116 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 400 predicate places. [2024-06-28 03:10:44,116 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 653 transitions, 7919 flow [2024-06-28 03:10:44,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:44,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:44,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:44,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:10:44,116 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:44,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash -404791454, now seen corresponding path program 16 times [2024-06-28 03:10:44,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:44,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868517827] [2024-06-28 03:10:44,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:45,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868517827] [2024-06-28 03:10:45,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868517827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:45,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:45,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:45,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690125337] [2024-06-28 03:10:45,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:45,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:45,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:45,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 653 transitions, 7919 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:45,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:45,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:46,681 INFO L124 PetriNetUnfolderBase]: 3058/4926 cut-off events. [2024-06-28 03:10:46,681 INFO L125 PetriNetUnfolderBase]: For 1484237/1484237 co-relation queries the response was YES. [2024-06-28 03:10:46,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64152 conditions, 4926 events. 3058/4926 cut-off events. For 1484237/1484237 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 29740 event pairs, 502 based on Foata normal form. 2/4927 useless extension candidates. Maximal degree in co-relation 63947. Up to 4314 conditions per place. [2024-06-28 03:10:46,770 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 572 selfloop transitions, 98 changer transitions 0/675 dead transitions. [2024-06-28 03:10:46,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 675 transitions, 9667 flow [2024-06-28 03:10:46,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:10:46,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:10:46,772 INFO L175 Difference]: Start difference. First operand has 442 places, 653 transitions, 7919 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:10:46,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 675 transitions, 9667 flow [2024-06-28 03:10:50,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 675 transitions, 9461 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 03:10:50,761 INFO L231 Difference]: Finished difference. Result has 443 places, 657 transitions, 8208 flow [2024-06-28 03:10:50,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7713, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8208, PETRI_PLACES=443, PETRI_TRANSITIONS=657} [2024-06-28 03:10:50,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-28 03:10:50,762 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 657 transitions, 8208 flow [2024-06-28 03:10:50,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:50,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:50,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:50,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:10:50,763 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:50,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash 395978053, now seen corresponding path program 6 times [2024-06-28 03:10:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852843004] [2024-06-28 03:10:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:50,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:51,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:51,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852843004] [2024-06-28 03:10:51,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852843004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:51,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:51,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476424416] [2024-06-28 03:10:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:51,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:51,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:51,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:51,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:51,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:51,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 657 transitions, 8208 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:51,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:51,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:51,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:53,042 INFO L124 PetriNetUnfolderBase]: 3068/4939 cut-off events. [2024-06-28 03:10:53,043 INFO L125 PetriNetUnfolderBase]: For 1519821/1519827 co-relation queries the response was YES. [2024-06-28 03:10:53,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65161 conditions, 4939 events. 3068/4939 cut-off events. For 1519821/1519827 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 29797 event pairs, 498 based on Foata normal form. 8/4946 useless extension candidates. Maximal degree in co-relation 64955. Up to 4490 conditions per place. [2024-06-28 03:10:53,133 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 604 selfloop transitions, 68 changer transitions 0/677 dead transitions. [2024-06-28 03:10:53,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 677 transitions, 9852 flow [2024-06-28 03:10:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:10:53,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:10:53,134 INFO L175 Difference]: Start difference. First operand has 443 places, 657 transitions, 8208 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:10:53,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 677 transitions, 9852 flow [2024-06-28 03:10:56,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 677 transitions, 9385 flow, removed 138 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:56,392 INFO L231 Difference]: Finished difference. Result has 445 places, 661 transitions, 8126 flow [2024-06-28 03:10:56,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7741, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8126, PETRI_PLACES=445, PETRI_TRANSITIONS=661} [2024-06-28 03:10:56,393 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-28 03:10:56,393 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 661 transitions, 8126 flow [2024-06-28 03:10:56,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:56,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:56,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:10:56,393 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:10:56,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash 409101996, now seen corresponding path program 10 times [2024-06-28 03:10:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:56,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832645948] [2024-06-28 03:10:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832645948] [2024-06-28 03:10:57,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832645948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:57,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:57,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764644398] [2024-06-28 03:10:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:57,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:57,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:57,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:10:57,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 661 transitions, 8126 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:57,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:57,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:10:57,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:59,089 INFO L124 PetriNetUnfolderBase]: 3081/4961 cut-off events. [2024-06-28 03:10:59,089 INFO L125 PetriNetUnfolderBase]: For 1547159/1547165 co-relation queries the response was YES. [2024-06-28 03:10:59,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65943 conditions, 4961 events. 3081/4961 cut-off events. For 1547159/1547165 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 30025 event pairs, 498 based on Foata normal form. 7/4967 useless extension candidates. Maximal degree in co-relation 65736. Up to 4460 conditions per place. [2024-06-28 03:10:59,185 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 589 selfloop transitions, 91 changer transitions 0/685 dead transitions. [2024-06-28 03:10:59,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 685 transitions, 10284 flow [2024-06-28 03:10:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:10:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:10:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:10:59,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:10:59,187 INFO L175 Difference]: Start difference. First operand has 445 places, 661 transitions, 8126 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:10:59,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 685 transitions, 10284 flow [2024-06-28 03:11:03,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 685 transitions, 9927 flow, removed 113 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:03,286 INFO L231 Difference]: Finished difference. Result has 448 places, 669 transitions, 8439 flow [2024-06-28 03:11:03,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7769, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8439, PETRI_PLACES=448, PETRI_TRANSITIONS=669} [2024-06-28 03:11:03,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-28 03:11:03,294 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 669 transitions, 8439 flow [2024-06-28 03:11:03,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:03,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:03,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:03,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:11:03,308 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:03,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash -391447411, now seen corresponding path program 7 times [2024-06-28 03:11:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342038843] [2024-06-28 03:11:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:03,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:04,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:04,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342038843] [2024-06-28 03:11:04,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342038843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:04,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:04,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:04,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483997179] [2024-06-28 03:11:04,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:04,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:04,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:04,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:04,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:04,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:04,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 669 transitions, 8439 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:04,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:04,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:04,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:05,849 INFO L124 PetriNetUnfolderBase]: 3101/4987 cut-off events. [2024-06-28 03:11:05,849 INFO L125 PetriNetUnfolderBase]: For 1610658/1610658 co-relation queries the response was YES. [2024-06-28 03:11:05,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66839 conditions, 4987 events. 3101/4987 cut-off events. For 1610658/1610658 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 30225 event pairs, 541 based on Foata normal form. 4/4989 useless extension candidates. Maximal degree in co-relation 66630. Up to 4616 conditions per place. [2024-06-28 03:11:05,944 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 654 selfloop transitions, 29 changer transitions 0/688 dead transitions. [2024-06-28 03:11:05,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 688 transitions, 10117 flow [2024-06-28 03:11:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:05,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:11:05,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:11:05,946 INFO L175 Difference]: Start difference. First operand has 448 places, 669 transitions, 8439 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:11:05,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 688 transitions, 10117 flow [2024-06-28 03:11:10,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 688 transitions, 9751 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-06-28 03:11:10,044 INFO L231 Difference]: Finished difference. Result has 452 places, 673 transitions, 8385 flow [2024-06-28 03:11:10,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8073, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8385, PETRI_PLACES=452, PETRI_TRANSITIONS=673} [2024-06-28 03:11:10,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 410 predicate places. [2024-06-28 03:11:10,045 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 673 transitions, 8385 flow [2024-06-28 03:11:10,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:10,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:10,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:10,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:11:10,045 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:10,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:10,046 INFO L85 PathProgramCache]: Analyzing trace with hash 395977836, now seen corresponding path program 11 times [2024-06-28 03:11:10,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:10,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782262531] [2024-06-28 03:11:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:10,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:11,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:11,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782262531] [2024-06-28 03:11:11,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782262531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:11,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:11,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468547476] [2024-06-28 03:11:11,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:11,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:11,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:11,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:11,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:11,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 673 transitions, 8385 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:11,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:11,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:11,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:12,834 INFO L124 PetriNetUnfolderBase]: 3106/5000 cut-off events. [2024-06-28 03:11:12,834 INFO L125 PetriNetUnfolderBase]: For 1601017/1601023 co-relation queries the response was YES. [2024-06-28 03:11:12,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67322 conditions, 5000 events. 3106/5000 cut-off events. For 1601017/1601023 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 30324 event pairs, 498 based on Foata normal form. 7/5006 useless extension candidates. Maximal degree in co-relation 67111. Up to 4546 conditions per place. [2024-06-28 03:11:12,930 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 620 selfloop transitions, 67 changer transitions 0/692 dead transitions. [2024-06-28 03:11:12,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 692 transitions, 10004 flow [2024-06-28 03:11:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:11:12,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:11:12,932 INFO L175 Difference]: Start difference. First operand has 452 places, 673 transitions, 8385 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:11:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 692 transitions, 10004 flow [2024-06-28 03:11:16,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 692 transitions, 9746 flow, removed 103 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:16,519 INFO L231 Difference]: Finished difference. Result has 454 places, 676 transitions, 8452 flow [2024-06-28 03:11:16,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8127, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8452, PETRI_PLACES=454, PETRI_TRANSITIONS=676} [2024-06-28 03:11:16,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-06-28 03:11:16,520 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 676 transitions, 8452 flow [2024-06-28 03:11:16,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:16,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:16,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:16,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:11:16,520 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:16,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash -404780294, now seen corresponding path program 17 times [2024-06-28 03:11:16,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:16,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656011215] [2024-06-28 03:11:16,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:16,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:17,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:17,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656011215] [2024-06-28 03:11:17,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656011215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:17,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:17,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249924513] [2024-06-28 03:11:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:17,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:17,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:17,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 676 transitions, 8452 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:17,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:17,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:17,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:18,871 INFO L124 PetriNetUnfolderBase]: 3116/5019 cut-off events. [2024-06-28 03:11:18,872 INFO L125 PetriNetUnfolderBase]: For 1627465/1627465 co-relation queries the response was YES. [2024-06-28 03:11:18,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67544 conditions, 5019 events. 3116/5019 cut-off events. For 1627465/1627465 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 30409 event pairs, 501 based on Foata normal form. 2/5020 useless extension candidates. Maximal degree in co-relation 67332. Up to 4383 conditions per place. [2024-06-28 03:11:18,966 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 588 selfloop transitions, 105 changer transitions 0/698 dead transitions. [2024-06-28 03:11:18,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 698 transitions, 10272 flow [2024-06-28 03:11:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:11:18,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:11:18,967 INFO L175 Difference]: Start difference. First operand has 454 places, 676 transitions, 8452 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:11:18,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 698 transitions, 10272 flow [2024-06-28 03:11:23,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 698 transitions, 9978 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:23,497 INFO L231 Difference]: Finished difference. Result has 456 places, 680 transitions, 8687 flow [2024-06-28 03:11:23,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8158, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8687, PETRI_PLACES=456, PETRI_TRANSITIONS=680} [2024-06-28 03:11:23,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 414 predicate places. [2024-06-28 03:11:23,497 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 680 transitions, 8687 flow [2024-06-28 03:11:23,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:23,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:23,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:23,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:11:23,498 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:23,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash -391893284, now seen corresponding path program 18 times [2024-06-28 03:11:23,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:23,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504061459] [2024-06-28 03:11:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:24,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:24,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504061459] [2024-06-28 03:11:24,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504061459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:24,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:24,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:24,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359368349] [2024-06-28 03:11:24,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:24,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:24,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:24,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:24,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:24,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:24,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 680 transitions, 8687 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:24,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:24,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:24,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:25,925 INFO L124 PetriNetUnfolderBase]: 3126/5037 cut-off events. [2024-06-28 03:11:25,925 INFO L125 PetriNetUnfolderBase]: For 1664651/1664651 co-relation queries the response was YES. [2024-06-28 03:11:25,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68610 conditions, 5037 events. 3126/5037 cut-off events. For 1664651/1664651 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 30578 event pairs, 501 based on Foata normal form. 2/5038 useless extension candidates. Maximal degree in co-relation 68397. Up to 4313 conditions per place. [2024-06-28 03:11:26,025 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 548 selfloop transitions, 148 changer transitions 0/701 dead transitions. [2024-06-28 03:11:26,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 701 transitions, 10515 flow [2024-06-28 03:11:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:11:26,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-28 03:11:26,027 INFO L175 Difference]: Start difference. First operand has 456 places, 680 transitions, 8687 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:11:26,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 701 transitions, 10515 flow [2024-06-28 03:11:30,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 701 transitions, 10014 flow, removed 148 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:30,035 INFO L231 Difference]: Finished difference. Result has 458 places, 684 transitions, 8809 flow [2024-06-28 03:11:30,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8186, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8809, PETRI_PLACES=458, PETRI_TRANSITIONS=684} [2024-06-28 03:11:30,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-28 03:11:30,035 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 684 transitions, 8809 flow [2024-06-28 03:11:30,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:30,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:30,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:30,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:11:30,036 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:30,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1022297269, now seen corresponding path program 8 times [2024-06-28 03:11:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:30,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35637163] [2024-06-28 03:11:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:30,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:30,915 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 03:11:30,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35637163] [2024-06-28 03:11:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35637163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:30,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:30,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:30,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007555175] [2024-06-28 03:11:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:30,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:30,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:30,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:30,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:31,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:31,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 684 transitions, 8809 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:31,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:31,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:31,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:32,402 INFO L124 PetriNetUnfolderBase]: 3178/5108 cut-off events. [2024-06-28 03:11:32,402 INFO L125 PetriNetUnfolderBase]: For 1767337/1767343 co-relation queries the response was YES. [2024-06-28 03:11:32,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71097 conditions, 5108 events. 3178/5108 cut-off events. For 1767337/1767343 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 30938 event pairs, 498 based on Foata normal form. 10/5117 useless extension candidates. Maximal degree in co-relation 70883. Up to 4535 conditions per place. [2024-06-28 03:11:32,500 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 603 selfloop transitions, 106 changer transitions 0/714 dead transitions. [2024-06-28 03:11:32,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 714 transitions, 11301 flow [2024-06-28 03:11:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:11:32,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-28 03:11:32,501 INFO L175 Difference]: Start difference. First operand has 458 places, 684 transitions, 8809 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:11:32,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 714 transitions, 11301 flow [2024-06-28 03:11:36,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 714 transitions, 10706 flow, removed 152 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:36,509 INFO L231 Difference]: Finished difference. Result has 461 places, 696 transitions, 9167 flow [2024-06-28 03:11:36,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8214, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9167, PETRI_PLACES=461, PETRI_TRANSITIONS=696} [2024-06-28 03:11:36,510 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-28 03:11:36,510 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 696 transitions, 9167 flow [2024-06-28 03:11:36,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:36,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:36,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:36,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:11:36,511 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:36,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash 408864846, now seen corresponding path program 12 times [2024-06-28 03:11:36,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:36,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321317043] [2024-06-28 03:11:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:36,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:37,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:37,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321317043] [2024-06-28 03:11:37,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321317043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:37,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:37,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:37,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795896532] [2024-06-28 03:11:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:37,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:37,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:37,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:37,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:37,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:37,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 696 transitions, 9167 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:37,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:37,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:37,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:39,291 INFO L124 PetriNetUnfolderBase]: 3175/5108 cut-off events. [2024-06-28 03:11:39,291 INFO L125 PetriNetUnfolderBase]: For 1750606/1750612 co-relation queries the response was YES. [2024-06-28 03:11:39,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71006 conditions, 5108 events. 3175/5108 cut-off events. For 1750606/1750612 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 31031 event pairs, 499 based on Foata normal form. 7/5114 useless extension candidates. Maximal degree in co-relation 70790. Up to 4591 conditions per place. [2024-06-28 03:11:39,392 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 615 selfloop transitions, 92 changer transitions 0/712 dead transitions. [2024-06-28 03:11:39,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 712 transitions, 10690 flow [2024-06-28 03:11:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:11:39,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:11:39,393 INFO L175 Difference]: Start difference. First operand has 461 places, 696 transitions, 9167 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:11:39,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 712 transitions, 10690 flow [2024-06-28 03:11:43,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 712 transitions, 10176 flow, removed 216 selfloop flow, removed 5 redundant places. [2024-06-28 03:11:43,072 INFO L231 Difference]: Finished difference. Result has 465 places, 697 transitions, 8894 flow [2024-06-28 03:11:43,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8693, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8894, PETRI_PLACES=465, PETRI_TRANSITIONS=697} [2024-06-28 03:11:43,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 423 predicate places. [2024-06-28 03:11:43,073 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 697 transitions, 8894 flow [2024-06-28 03:11:43,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:43,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:43,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:43,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:11:43,074 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:43,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2033416654, now seen corresponding path program 19 times [2024-06-28 03:11:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739999770] [2024-06-28 03:11:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:43,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:43,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739999770] [2024-06-28 03:11:43,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739999770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:43,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:43,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984078262] [2024-06-28 03:11:43,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:43,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:43,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:44,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:44,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 697 transitions, 8894 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:44,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:44,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:44,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:45,579 INFO L124 PetriNetUnfolderBase]: 3201/5150 cut-off events. [2024-06-28 03:11:45,579 INFO L125 PetriNetUnfolderBase]: For 1805046/1805048 co-relation queries the response was YES. [2024-06-28 03:11:45,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72103 conditions, 5150 events. 3201/5150 cut-off events. For 1805046/1805048 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 31334 event pairs, 539 based on Foata normal form. 4/5153 useless extension candidates. Maximal degree in co-relation 71885. Up to 4371 conditions per place. [2024-06-28 03:11:45,685 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 558 selfloop transitions, 160 changer transitions 0/723 dead transitions. [2024-06-28 03:11:45,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 723 transitions, 11520 flow [2024-06-28 03:11:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:11:45,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:11:45,687 INFO L175 Difference]: Start difference. First operand has 465 places, 697 transitions, 8894 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:11:45,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 723 transitions, 11520 flow [2024-06-28 03:11:50,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 723 transitions, 11350 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:50,557 INFO L231 Difference]: Finished difference. Result has 469 places, 705 transitions, 9719 flow [2024-06-28 03:11:50,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8724, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9719, PETRI_PLACES=469, PETRI_TRANSITIONS=705} [2024-06-28 03:11:50,572 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 427 predicate places. [2024-06-28 03:11:50,572 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 705 transitions, 9719 flow [2024-06-28 03:11:50,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:50,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:50,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:50,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:11:50,573 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:50,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1193716411, now seen corresponding path program 9 times [2024-06-28 03:11:50,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180720309] [2024-06-28 03:11:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:50,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:51,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180720309] [2024-06-28 03:11:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180720309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:51,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137176306] [2024-06-28 03:11:51,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:51,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:51,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:51,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:51,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:51,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:51,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 705 transitions, 9719 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:51,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:51,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:51,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:53,116 INFO L124 PetriNetUnfolderBase]: 3211/5167 cut-off events. [2024-06-28 03:11:53,116 INFO L125 PetriNetUnfolderBase]: For 1851156/1851164 co-relation queries the response was YES. [2024-06-28 03:11:53,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73464 conditions, 5167 events. 3211/5167 cut-off events. For 1851156/1851164 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 31446 event pairs, 514 based on Foata normal form. 10/5176 useless extension candidates. Maximal degree in co-relation 73244. Up to 4644 conditions per place. [2024-06-28 03:11:53,221 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 627 selfloop transitions, 90 changer transitions 0/722 dead transitions. [2024-06-28 03:11:53,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 722 transitions, 11475 flow [2024-06-28 03:11:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:11:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:11:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:11:53,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:11:53,222 INFO L175 Difference]: Start difference. First operand has 469 places, 705 transitions, 9719 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:11:53,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 722 transitions, 11475 flow [2024-06-28 03:11:57,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 722 transitions, 10901 flow, removed 194 selfloop flow, removed 5 redundant places. [2024-06-28 03:11:57,790 INFO L231 Difference]: Finished difference. Result has 473 places, 709 transitions, 9612 flow [2024-06-28 03:11:57,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9145, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9612, PETRI_PLACES=473, PETRI_TRANSITIONS=709} [2024-06-28 03:11:57,791 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 431 predicate places. [2024-06-28 03:11:57,791 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 709 transitions, 9612 flow [2024-06-28 03:11:57,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:57,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:57,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:57,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:11:57,792 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:11:57,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash 344173605, now seen corresponding path program 10 times [2024-06-28 03:11:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:57,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814094259] [2024-06-28 03:11:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:57,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:58,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:58,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814094259] [2024-06-28 03:11:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814094259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:58,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:58,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228996953] [2024-06-28 03:11:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:58,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:58,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:11:58,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 709 transitions, 9612 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:58,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:58,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:11:58,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:00,442 INFO L124 PetriNetUnfolderBase]: 3285/5265 cut-off events. [2024-06-28 03:12:00,442 INFO L125 PetriNetUnfolderBase]: For 1977466/1977474 co-relation queries the response was YES. [2024-06-28 03:12:00,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77403 conditions, 5265 events. 3285/5265 cut-off events. For 1977466/1977474 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 31953 event pairs, 515 based on Foata normal form. 10/5274 useless extension candidates. Maximal degree in co-relation 77181. Up to 4408 conditions per place. [2024-06-28 03:12:00,544 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 544 selfloop transitions, 204 changer transitions 0/753 dead transitions. [2024-06-28 03:12:00,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 753 transitions, 13064 flow [2024-06-28 03:12:00,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:12:00,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-28 03:12:00,545 INFO L175 Difference]: Start difference. First operand has 473 places, 709 transitions, 9612 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:12:00,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 753 transitions, 13064 flow [2024-06-28 03:12:05,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 753 transitions, 12625 flow, removed 132 selfloop flow, removed 7 redundant places. [2024-06-28 03:12:05,855 INFO L231 Difference]: Finished difference. Result has 477 places, 730 transitions, 10635 flow [2024-06-28 03:12:05,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9173, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10635, PETRI_PLACES=477, PETRI_TRANSITIONS=730} [2024-06-28 03:12:05,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 435 predicate places. [2024-06-28 03:12:05,855 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 730 transitions, 10635 flow [2024-06-28 03:12:05,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:05,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:05,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:05,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:12:05,856 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:05,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:05,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1901410428, now seen corresponding path program 20 times [2024-06-28 03:12:05,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:05,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137126465] [2024-06-28 03:12:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:05,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:06,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137126465] [2024-06-28 03:12:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137126465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:06,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212911723] [2024-06-28 03:12:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:06,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:06,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:06,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 730 transitions, 10635 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:06,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:06,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:06,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:08,582 INFO L124 PetriNetUnfolderBase]: 3295/5271 cut-off events. [2024-06-28 03:12:08,582 INFO L125 PetriNetUnfolderBase]: For 2027435/2027435 co-relation queries the response was YES. [2024-06-28 03:12:08,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78925 conditions, 5271 events. 3295/5271 cut-off events. For 2027435/2027435 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 31862 event pairs, 503 based on Foata normal form. 2/5272 useless extension candidates. Maximal degree in co-relation 78700. Up to 4822 conditions per place. [2024-06-28 03:12:08,689 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 675 selfloop transitions, 66 changer transitions 0/746 dead transitions. [2024-06-28 03:12:08,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 746 transitions, 12563 flow [2024-06-28 03:12:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:12:08,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:12:08,690 INFO L175 Difference]: Start difference. First operand has 477 places, 730 transitions, 10635 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:12:08,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 746 transitions, 12563 flow [2024-06-28 03:12:13,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 746 transitions, 12221 flow, removed 127 selfloop flow, removed 3 redundant places. [2024-06-28 03:12:13,276 INFO L231 Difference]: Finished difference. Result has 483 places, 734 transitions, 10784 flow [2024-06-28 03:12:13,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10299, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10784, PETRI_PLACES=483, PETRI_TRANSITIONS=734} [2024-06-28 03:12:13,277 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 441 predicate places. [2024-06-28 03:12:13,277 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 734 transitions, 10784 flow [2024-06-28 03:12:13,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:13,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:13,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:13,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:12:13,277 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:13,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:13,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2033416840, now seen corresponding path program 13 times [2024-06-28 03:12:13,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:13,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038005320] [2024-06-28 03:12:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:13,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:14,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:14,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038005320] [2024-06-28 03:12:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038005320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571698705] [2024-06-28 03:12:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:14,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:14,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:14,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:14,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 734 transitions, 10784 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:14,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:14,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:14,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:16,232 INFO L124 PetriNetUnfolderBase]: 3300/5286 cut-off events. [2024-06-28 03:12:16,233 INFO L125 PetriNetUnfolderBase]: For 2023199/2023207 co-relation queries the response was YES. [2024-06-28 03:12:16,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78913 conditions, 5286 events. 3300/5286 cut-off events. For 2023199/2023207 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 32078 event pairs, 519 based on Foata normal form. 9/5294 useless extension candidates. Maximal degree in co-relation 78686. Up to 4770 conditions per place. [2024-06-28 03:12:16,343 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 656 selfloop transitions, 89 changer transitions 0/750 dead transitions. [2024-06-28 03:12:16,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 750 transitions, 12580 flow [2024-06-28 03:12:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:12:16,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:12:16,344 INFO L175 Difference]: Start difference. First operand has 483 places, 734 transitions, 10784 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:12:16,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 750 transitions, 12580 flow [2024-06-28 03:12:22,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 750 transitions, 12123 flow, removed 165 selfloop flow, removed 7 redundant places. [2024-06-28 03:12:22,366 INFO L231 Difference]: Finished difference. Result has 485 places, 737 transitions, 10773 flow [2024-06-28 03:12:22,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10327, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10773, PETRI_PLACES=485, PETRI_TRANSITIONS=737} [2024-06-28 03:12:22,367 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-28 03:12:22,367 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 737 transitions, 10773 flow [2024-06-28 03:12:22,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:22,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:22,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:22,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:12:22,368 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:22,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1840371013, now seen corresponding path program 11 times [2024-06-28 03:12:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:22,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195643023] [2024-06-28 03:12:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:23,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:23,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195643023] [2024-06-28 03:12:23,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195643023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:23,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:23,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:23,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195211578] [2024-06-28 03:12:23,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:23,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:23,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:23,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:23,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:23,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:23,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 737 transitions, 10773 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:23,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:23,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:23,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:25,515 INFO L124 PetriNetUnfolderBase]: 3321/5307 cut-off events. [2024-06-28 03:12:25,515 INFO L125 PetriNetUnfolderBase]: For 2075783/2075785 co-relation queries the response was YES. [2024-06-28 03:12:25,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79889 conditions, 5307 events. 3321/5307 cut-off events. For 2075783/2075785 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 32130 event pairs, 545 based on Foata normal form. 3/5308 useless extension candidates. Maximal degree in co-relation 79661. Up to 4886 conditions per place. [2024-06-28 03:12:25,615 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 700 selfloop transitions, 58 changer transitions 0/763 dead transitions. [2024-06-28 03:12:25,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 763 transitions, 13102 flow [2024-06-28 03:12:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:12:25,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:12:25,616 INFO L175 Difference]: Start difference. First operand has 485 places, 737 transitions, 10773 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:12:25,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 763 transitions, 13102 flow [2024-06-28 03:12:31,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 763 transitions, 12678 flow, removed 125 selfloop flow, removed 7 redundant places. [2024-06-28 03:12:31,971 INFO L231 Difference]: Finished difference. Result has 489 places, 751 transitions, 10996 flow [2024-06-28 03:12:31,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10349, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10996, PETRI_PLACES=489, PETRI_TRANSITIONS=751} [2024-06-28 03:12:31,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 447 predicate places. [2024-06-28 03:12:31,972 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 751 transitions, 10996 flow [2024-06-28 03:12:31,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:31,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:31,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:31,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:12:31,972 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:31,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:31,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1912492711, now seen corresponding path program 12 times [2024-06-28 03:12:31,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:31,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673125314] [2024-06-28 03:12:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:31,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:32,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:32,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673125314] [2024-06-28 03:12:32,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673125314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:32,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:32,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329955033] [2024-06-28 03:12:32,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:32,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:32,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:32,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:32,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 751 transitions, 10996 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:32,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:32,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:32,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:34,663 INFO L124 PetriNetUnfolderBase]: 3347/5353 cut-off events. [2024-06-28 03:12:34,664 INFO L125 PetriNetUnfolderBase]: For 2126552/2126560 co-relation queries the response was YES. [2024-06-28 03:12:34,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81039 conditions, 5353 events. 3347/5353 cut-off events. For 2126552/2126560 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 32486 event pairs, 515 based on Foata normal form. 10/5362 useless extension candidates. Maximal degree in co-relation 80808. Up to 4755 conditions per place. [2024-06-28 03:12:34,778 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 655 selfloop transitions, 117 changer transitions 0/777 dead transitions. [2024-06-28 03:12:34,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 777 transitions, 13608 flow [2024-06-28 03:12:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:12:34,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:12:34,779 INFO L175 Difference]: Start difference. First operand has 489 places, 751 transitions, 10996 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:12:34,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 777 transitions, 13608 flow [2024-06-28 03:12:40,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 777 transitions, 13237 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:40,658 INFO L231 Difference]: Finished difference. Result has 493 places, 759 transitions, 11216 flow [2024-06-28 03:12:40,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10625, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11216, PETRI_PLACES=493, PETRI_TRANSITIONS=759} [2024-06-28 03:12:40,659 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 451 predicate places. [2024-06-28 03:12:40,659 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 759 transitions, 11216 flow [2024-06-28 03:12:40,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:40,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:40,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:40,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:12:40,660 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:40,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 844658666, now seen corresponding path program 14 times [2024-06-28 03:12:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:40,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615031441] [2024-06-28 03:12:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:40,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:41,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615031441] [2024-06-28 03:12:41,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615031441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:41,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:41,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:41,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064670901] [2024-06-28 03:12:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:41,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:41,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:41,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:42,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:42,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 759 transitions, 11216 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:42,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:42,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:42,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:44,006 INFO L124 PetriNetUnfolderBase]: 3360/5375 cut-off events. [2024-06-28 03:12:44,006 INFO L125 PetriNetUnfolderBase]: For 2169960/2169968 co-relation queries the response was YES. [2024-06-28 03:12:44,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81867 conditions, 5375 events. 3360/5375 cut-off events. For 2169960/2169968 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 32711 event pairs, 514 based on Foata normal form. 9/5383 useless extension candidates. Maximal degree in co-relation 81635. Up to 4825 conditions per place. [2024-06-28 03:12:44,109 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 666 selfloop transitions, 107 changer transitions 0/778 dead transitions. [2024-06-28 03:12:44,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 778 transitions, 13640 flow [2024-06-28 03:12:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:12:44,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:12:44,110 INFO L175 Difference]: Start difference. First operand has 493 places, 759 transitions, 11216 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:12:44,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 778 transitions, 13640 flow [2024-06-28 03:12:50,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 778 transitions, 13129 flow, removed 102 selfloop flow, removed 6 redundant places. [2024-06-28 03:12:50,132 INFO L231 Difference]: Finished difference. Result has 496 places, 765 transitions, 11455 flow [2024-06-28 03:12:50,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10705, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11455, PETRI_PLACES=496, PETRI_TRANSITIONS=765} [2024-06-28 03:12:50,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 454 predicate places. [2024-06-28 03:12:50,133 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 765 transitions, 11455 flow [2024-06-28 03:12:50,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:50,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:50,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:50,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:12:50,133 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:50,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:50,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1193727974, now seen corresponding path program 21 times [2024-06-28 03:12:50,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:50,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859093712] [2024-06-28 03:12:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:50,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:12:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:12:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:12:51,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859093712] [2024-06-28 03:12:51,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859093712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:12:51,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:12:51,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:12:51,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702602095] [2024-06-28 03:12:51,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:12:51,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:12:51,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:12:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:12:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:12:51,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:12:51,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 765 transitions, 11455 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:51,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:12:51,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:12:51,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:12:53,125 INFO L124 PetriNetUnfolderBase]: 3354/5362 cut-off events. [2024-06-28 03:12:53,125 INFO L125 PetriNetUnfolderBase]: For 2176228/2176230 co-relation queries the response was YES. [2024-06-28 03:12:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81222 conditions, 5362 events. 3354/5362 cut-off events. For 2176228/2176230 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 32596 event pairs, 539 based on Foata normal form. 4/5365 useless extension candidates. Maximal degree in co-relation 80989. Up to 4597 conditions per place. [2024-06-28 03:12:53,324 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 624 selfloop transitions, 153 changer transitions 0/782 dead transitions. [2024-06-28 03:12:53,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 782 transitions, 13277 flow [2024-06-28 03:12:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:12:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:12:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:12:53,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:12:53,332 INFO L175 Difference]: Start difference. First operand has 496 places, 765 transitions, 11455 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:12:53,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 782 transitions, 13277 flow [2024-06-28 03:12:59,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 782 transitions, 12641 flow, removed 267 selfloop flow, removed 5 redundant places. [2024-06-28 03:12:59,635 INFO L231 Difference]: Finished difference. Result has 500 places, 765 transitions, 11132 flow [2024-06-28 03:12:59,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10819, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11132, PETRI_PLACES=500, PETRI_TRANSITIONS=765} [2024-06-28 03:12:59,636 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 458 predicate places. [2024-06-28 03:12:59,636 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 765 transitions, 11132 flow [2024-06-28 03:12:59,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:12:59,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:12:59,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:12:59,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:12:59,636 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:12:59,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:12:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1180383931, now seen corresponding path program 13 times [2024-06-28 03:12:59,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:12:59,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648830195] [2024-06-28 03:12:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:12:59,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:12:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:00,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:00,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648830195] [2024-06-28 03:13:00,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648830195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:00,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:00,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:00,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486464618] [2024-06-28 03:13:00,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:00,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:00,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:00,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:00,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:00,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:00,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 765 transitions, 11132 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:00,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:00,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:00,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:02,636 INFO L124 PetriNetUnfolderBase]: 3366/5378 cut-off events. [2024-06-28 03:13:02,637 INFO L125 PetriNetUnfolderBase]: For 2195371/2195373 co-relation queries the response was YES. [2024-06-28 03:13:02,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81355 conditions, 5378 events. 3366/5378 cut-off events. For 2195371/2195373 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 32681 event pairs, 585 based on Foata normal form. 6/5382 useless extension candidates. Maximal degree in co-relation 81120. Up to 4975 conditions per place. [2024-06-28 03:13:02,745 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 739 selfloop transitions, 39 changer transitions 0/783 dead transitions. [2024-06-28 03:13:02,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 783 transitions, 13093 flow [2024-06-28 03:13:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:02,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:02,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:13:02,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:13:02,746 INFO L175 Difference]: Start difference. First operand has 500 places, 765 transitions, 11132 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:13:02,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 783 transitions, 13093 flow [2024-06-28 03:13:09,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 783 transitions, 12772 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:13:09,327 INFO L231 Difference]: Finished difference. Result has 501 places, 771 transitions, 11254 flow [2024-06-28 03:13:09,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10811, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11254, PETRI_PLACES=501, PETRI_TRANSITIONS=771} [2024-06-28 03:13:09,328 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-28 03:13:09,328 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 771 transitions, 11254 flow [2024-06-28 03:13:09,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:09,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:09,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:13:09,329 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:09,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash 344053232, now seen corresponding path program 22 times [2024-06-28 03:13:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:09,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360657045] [2024-06-28 03:13:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:10,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360657045] [2024-06-28 03:13:10,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360657045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:10,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:10,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:10,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82955961] [2024-06-28 03:13:10,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:10,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:10,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:10,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:10,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 771 transitions, 11254 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:10,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:10,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:10,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:12,520 INFO L124 PetriNetUnfolderBase]: 3371/5378 cut-off events. [2024-06-28 03:13:12,520 INFO L125 PetriNetUnfolderBase]: For 2189582/2189582 co-relation queries the response was YES. [2024-06-28 03:13:12,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81420 conditions, 5378 events. 3371/5378 cut-off events. For 2189582/2189582 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 32540 event pairs, 504 based on Foata normal form. 1/5378 useless extension candidates. Maximal degree in co-relation 81184. Up to 4896 conditions per place. [2024-06-28 03:13:12,628 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 695 selfloop transitions, 85 changer transitions 0/785 dead transitions. [2024-06-28 03:13:12,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 785 transitions, 13070 flow [2024-06-28 03:13:12,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:13:12,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:13:12,629 INFO L175 Difference]: Start difference. First operand has 501 places, 771 transitions, 11254 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:13:12,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 785 transitions, 13070 flow [2024-06-28 03:13:19,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 785 transitions, 12673 flow, removed 164 selfloop flow, removed 7 redundant places. [2024-06-28 03:13:19,232 INFO L231 Difference]: Finished difference. Result has 503 places, 774 transitions, 11261 flow [2024-06-28 03:13:19,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10857, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11261, PETRI_PLACES=503, PETRI_TRANSITIONS=774} [2024-06-28 03:13:19,233 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-28 03:13:19,233 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 774 transitions, 11261 flow [2024-06-28 03:13:19,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:19,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:19,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:19,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:13:19,234 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:19,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:19,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2046541000, now seen corresponding path program 15 times [2024-06-28 03:13:19,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:19,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508157993] [2024-06-28 03:13:19,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:19,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:20,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:20,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508157993] [2024-06-28 03:13:20,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508157993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:20,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:20,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:20,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505619389] [2024-06-28 03:13:20,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:20,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:20,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:20,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:20,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 774 transitions, 11261 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:20,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:20,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:20,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:22,485 INFO L124 PetriNetUnfolderBase]: 3384/5415 cut-off events. [2024-06-28 03:13:22,485 INFO L125 PetriNetUnfolderBase]: For 2234591/2234599 co-relation queries the response was YES. [2024-06-28 03:13:22,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82463 conditions, 5415 events. 3384/5415 cut-off events. For 2234591/2234599 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 33001 event pairs, 517 based on Foata normal form. 9/5423 useless extension candidates. Maximal degree in co-relation 82226. Up to 4846 conditions per place. [2024-06-28 03:13:22,597 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 674 selfloop transitions, 116 changer transitions 0/795 dead transitions. [2024-06-28 03:13:22,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 795 transitions, 13757 flow [2024-06-28 03:13:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:13:22,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:13:22,599 INFO L175 Difference]: Start difference. First operand has 503 places, 774 transitions, 11261 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:13:22,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 795 transitions, 13757 flow [2024-06-28 03:13:29,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 795 transitions, 13284 flow, removed 112 selfloop flow, removed 8 redundant places. [2024-06-28 03:13:29,312 INFO L231 Difference]: Finished difference. Result has 505 places, 782 transitions, 11609 flow [2024-06-28 03:13:29,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10788, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11609, PETRI_PLACES=505, PETRI_TRANSITIONS=782} [2024-06-28 03:13:29,313 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 463 predicate places. [2024-06-28 03:13:29,313 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 782 transitions, 11609 flow [2024-06-28 03:13:29,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:29,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:29,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:29,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:13:29,314 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:29,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash 837306830, now seen corresponding path program 23 times [2024-06-28 03:13:29,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:29,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002513922] [2024-06-28 03:13:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:29,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:30,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:30,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002513922] [2024-06-28 03:13:30,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002513922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:30,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:30,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650843534] [2024-06-28 03:13:30,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:30,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:30,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:30,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 782 transitions, 11609 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:30,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:30,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:30,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:32,509 INFO L124 PetriNetUnfolderBase]: 3410/5458 cut-off events. [2024-06-28 03:13:32,509 INFO L125 PetriNetUnfolderBase]: For 2325101/2325103 co-relation queries the response was YES. [2024-06-28 03:13:32,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84450 conditions, 5458 events. 3410/5458 cut-off events. For 2325101/2325103 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 33347 event pairs, 542 based on Foata normal form. 4/5461 useless extension candidates. Maximal degree in co-relation 84211. Up to 4655 conditions per place. [2024-06-28 03:13:32,623 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 644 selfloop transitions, 157 changer transitions 0/806 dead transitions. [2024-06-28 03:13:32,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 806 transitions, 14455 flow [2024-06-28 03:13:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:13:32,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:13:32,624 INFO L175 Difference]: Start difference. First operand has 505 places, 782 transitions, 11609 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:13:32,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 806 transitions, 14455 flow [2024-06-28 03:13:39,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 806 transitions, 13967 flow, removed 183 selfloop flow, removed 5 redundant places. [2024-06-28 03:13:39,737 INFO L231 Difference]: Finished difference. Result has 510 places, 790 transitions, 12195 flow [2024-06-28 03:13:39,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11125, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12195, PETRI_PLACES=510, PETRI_TRANSITIONS=790} [2024-06-28 03:13:39,738 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 468 predicate places. [2024-06-28 03:13:39,738 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 790 transitions, 12195 flow [2024-06-28 03:13:39,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:39,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:39,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:13:39,739 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:39,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1675715847, now seen corresponding path program 14 times [2024-06-28 03:13:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:39,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801757721] [2024-06-28 03:13:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:40,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:40,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801757721] [2024-06-28 03:13:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801757721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:40,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:40,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993549399] [2024-06-28 03:13:40,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:40,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:40,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:40,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:40,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:40,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:40,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 790 transitions, 12195 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:40,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:40,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:40,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:42,800 INFO L124 PetriNetUnfolderBase]: 3404/5451 cut-off events. [2024-06-28 03:13:42,800 INFO L125 PetriNetUnfolderBase]: For 2329102/2329110 co-relation queries the response was YES. [2024-06-28 03:13:42,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84581 conditions, 5451 events. 3404/5451 cut-off events. For 2329102/2329110 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 33224 event pairs, 515 based on Foata normal form. 10/5460 useless extension candidates. Maximal degree in co-relation 84339. Up to 4912 conditions per place. [2024-06-28 03:13:42,913 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 713 selfloop transitions, 89 changer transitions 0/807 dead transitions. [2024-06-28 03:13:42,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 807 transitions, 14097 flow [2024-06-28 03:13:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 03:13:42,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 03:13:42,915 INFO L175 Difference]: Start difference. First operand has 510 places, 790 transitions, 12195 flow. Second operand 9 states and 156 transitions. [2024-06-28 03:13:42,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 807 transitions, 14097 flow [2024-06-28 03:13:50,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 807 transitions, 13495 flow, removed 215 selfloop flow, removed 5 redundant places. [2024-06-28 03:13:50,699 INFO L231 Difference]: Finished difference. Result has 514 places, 794 transitions, 12034 flow [2024-06-28 03:13:50,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11593, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12034, PETRI_PLACES=514, PETRI_TRANSITIONS=794} [2024-06-28 03:13:50,700 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 472 predicate places. [2024-06-28 03:13:50,700 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 794 transitions, 12034 flow [2024-06-28 03:13:50,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:50,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:13:50,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:13:50,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:13:50,701 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:13:50,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:13:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1412007216, now seen corresponding path program 16 times [2024-06-28 03:13:50,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:13:50,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586357811] [2024-06-28 03:13:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:13:50,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:13:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:13:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:13:51,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:13:51,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586357811] [2024-06-28 03:13:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586357811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:13:51,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:13:51,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:13:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22180762] [2024-06-28 03:13:51,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:13:51,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:13:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:13:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:13:51,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:13:51,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:13:51,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 794 transitions, 12034 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:13:51,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:13:51,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:13:51,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:13:54,087 INFO L124 PetriNetUnfolderBase]: 3409/5460 cut-off events. [2024-06-28 03:13:54,087 INFO L125 PetriNetUnfolderBase]: For 2325924/2325932 co-relation queries the response was YES. [2024-06-28 03:13:54,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84654 conditions, 5460 events. 3409/5460 cut-off events. For 2325924/2325932 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 33358 event pairs, 516 based on Foata normal form. 9/5468 useless extension candidates. Maximal degree in co-relation 84410. Up to 4772 conditions per place. [2024-06-28 03:13:54,202 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 636 selfloop transitions, 176 changer transitions 0/817 dead transitions. [2024-06-28 03:13:54,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 817 transitions, 15049 flow [2024-06-28 03:13:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:13:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:13:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:13:54,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:13:54,203 INFO L175 Difference]: Start difference. First operand has 514 places, 794 transitions, 12034 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:13:54,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 817 transitions, 15049 flow [2024-06-28 03:14:01,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 817 transitions, 14648 flow, removed 114 selfloop flow, removed 7 redundant places. [2024-06-28 03:14:01,328 INFO L231 Difference]: Finished difference. Result has 517 places, 804 transitions, 12793 flow [2024-06-28 03:14:01,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11633, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12793, PETRI_PLACES=517, PETRI_TRANSITIONS=804} [2024-06-28 03:14:01,329 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 475 predicate places. [2024-06-28 03:14:01,329 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 804 transitions, 12793 flow [2024-06-28 03:14:01,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:01,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:01,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:01,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:14:01,330 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:01,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2046304067, now seen corresponding path program 15 times [2024-06-28 03:14:01,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:01,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23611185] [2024-06-28 03:14:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:01,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23611185] [2024-06-28 03:14:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23611185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:02,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:02,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945390828] [2024-06-28 03:14:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:02,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:02,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:02,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 804 transitions, 12793 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:02,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:02,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:02,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:04,229 INFO L124 PetriNetUnfolderBase]: 3411/5457 cut-off events. [2024-06-28 03:14:04,229 INFO L125 PetriNetUnfolderBase]: For 2358329/2358337 co-relation queries the response was YES. [2024-06-28 03:14:04,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85057 conditions, 5457 events. 3411/5457 cut-off events. For 2358329/2358337 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 33291 event pairs, 512 based on Foata normal form. 10/5466 useless extension candidates. Maximal degree in co-relation 84811. Up to 4868 conditions per place. [2024-06-28 03:14:04,344 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 696 selfloop transitions, 120 changer transitions 0/821 dead transitions. [2024-06-28 03:14:04,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 821 transitions, 14747 flow [2024-06-28 03:14:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:14:04,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 03:14:04,345 INFO L175 Difference]: Start difference. First operand has 517 places, 804 transitions, 12793 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:14:04,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 821 transitions, 14747 flow [2024-06-28 03:14:11,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 821 transitions, 14307 flow, removed 174 selfloop flow, removed 4 redundant places. [2024-06-28 03:14:11,495 INFO L231 Difference]: Finished difference. Result has 523 places, 809 transitions, 12900 flow [2024-06-28 03:14:11,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12353, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12900, PETRI_PLACES=523, PETRI_TRANSITIONS=809} [2024-06-28 03:14:11,496 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 481 predicate places. [2024-06-28 03:14:11,496 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 809 transitions, 12900 flow [2024-06-28 03:14:11,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:11,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:11,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:11,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:14:11,497 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:11,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:11,497 INFO L85 PathProgramCache]: Analyzing trace with hash 967695836, now seen corresponding path program 17 times [2024-06-28 03:14:11,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874993717] [2024-06-28 03:14:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:11,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:12,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:12,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874993717] [2024-06-28 03:14:12,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874993717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:12,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:12,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:12,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008747378] [2024-06-28 03:14:12,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:12,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:12,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:12,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 809 transitions, 12900 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:12,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:12,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:12,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:15,068 INFO L124 PetriNetUnfolderBase]: 3408/5449 cut-off events. [2024-06-28 03:14:15,068 INFO L125 PetriNetUnfolderBase]: For 2341222/2341230 co-relation queries the response was YES. [2024-06-28 03:14:15,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85010 conditions, 5449 events. 3408/5449 cut-off events. For 2341222/2341230 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 33194 event pairs, 512 based on Foata normal form. 9/5457 useless extension candidates. Maximal degree in co-relation 84761. Up to 4881 conditions per place. [2024-06-28 03:14:15,179 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 703 selfloop transitions, 114 changer transitions 0/822 dead transitions. [2024-06-28 03:14:15,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 822 transitions, 14906 flow [2024-06-28 03:14:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:14:15,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:14:15,181 INFO L175 Difference]: Start difference. First operand has 523 places, 809 transitions, 12900 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:14:15,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 822 transitions, 14906 flow [2024-06-28 03:14:22,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 822 transitions, 14393 flow, removed 144 selfloop flow, removed 6 redundant places. [2024-06-28 03:14:22,927 INFO L231 Difference]: Finished difference. Result has 526 places, 809 transitions, 12621 flow [2024-06-28 03:14:22,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12387, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12621, PETRI_PLACES=526, PETRI_TRANSITIONS=809} [2024-06-28 03:14:22,927 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 484 predicate places. [2024-06-28 03:14:22,928 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 809 transitions, 12621 flow [2024-06-28 03:14:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:22,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:22,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:22,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:14:22,928 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:22,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:22,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1180829804, now seen corresponding path program 24 times [2024-06-28 03:14:22,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:22,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521133131] [2024-06-28 03:14:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:22,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:23,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:23,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521133131] [2024-06-28 03:14:23,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521133131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:23,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:23,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026388832] [2024-06-28 03:14:23,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:23,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:24,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:24,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 809 transitions, 12621 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:24,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:24,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:24,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:25,935 INFO L124 PetriNetUnfolderBase]: 3418/5468 cut-off events. [2024-06-28 03:14:25,936 INFO L125 PetriNetUnfolderBase]: For 2386121/2386123 co-relation queries the response was YES. [2024-06-28 03:14:26,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85305 conditions, 5468 events. 3418/5468 cut-off events. For 2386121/2386123 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 33396 event pairs, 538 based on Foata normal form. 4/5471 useless extension candidates. Maximal degree in co-relation 85055. Up to 4593 conditions per place. [2024-06-28 03:14:26,052 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 621 selfloop transitions, 203 changer transitions 0/829 dead transitions. [2024-06-28 03:14:26,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 829 transitions, 15179 flow [2024-06-28 03:14:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:14:26,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:14:26,053 INFO L175 Difference]: Start difference. First operand has 526 places, 809 transitions, 12621 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:14:26,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 829 transitions, 15179 flow [2024-06-28 03:14:33,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 829 transitions, 14770 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-28 03:14:33,155 INFO L231 Difference]: Finished difference. Result has 529 places, 813 transitions, 13009 flow [2024-06-28 03:14:33,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12212, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13009, PETRI_PLACES=529, PETRI_TRANSITIONS=813} [2024-06-28 03:14:33,156 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 487 predicate places. [2024-06-28 03:14:33,156 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 813 transitions, 13009 flow [2024-06-28 03:14:33,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:33,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:33,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:33,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:14:33,156 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:33,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 521542058, now seen corresponding path program 18 times [2024-06-28 03:14:33,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:33,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444590103] [2024-06-28 03:14:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:33,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:34,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444590103] [2024-06-28 03:14:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444590103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:34,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:34,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:34,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948452538] [2024-06-28 03:14:34,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:34,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:34,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:34,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 813 transitions, 13009 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:34,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:34,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:34,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:36,499 INFO L124 PetriNetUnfolderBase]: 3423/5480 cut-off events. [2024-06-28 03:14:36,499 INFO L125 PetriNetUnfolderBase]: For 2412539/2412547 co-relation queries the response was YES. [2024-06-28 03:14:36,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86242 conditions, 5480 events. 3423/5480 cut-off events. For 2412539/2412547 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 33492 event pairs, 513 based on Foata normal form. 9/5488 useless extension candidates. Maximal degree in co-relation 85991. Up to 4792 conditions per place. [2024-06-28 03:14:36,615 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 644 selfloop transitions, 180 changer transitions 0/829 dead transitions. [2024-06-28 03:14:36,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 829 transitions, 15583 flow [2024-06-28 03:14:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:14:36,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:14:36,616 INFO L175 Difference]: Start difference. First operand has 529 places, 813 transitions, 13009 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:14:36,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 829 transitions, 15583 flow [2024-06-28 03:14:44,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 829 transitions, 14814 flow, removed 184 selfloop flow, removed 7 redundant places. [2024-06-28 03:14:44,518 INFO L231 Difference]: Finished difference. Result has 531 places, 816 transitions, 12830 flow [2024-06-28 03:14:44,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12240, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=813, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12830, PETRI_PLACES=531, PETRI_TRANSITIONS=816} [2024-06-28 03:14:44,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 489 predicate places. [2024-06-28 03:14:44,519 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 816 transitions, 12830 flow [2024-06-28 03:14:44,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:44,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:44,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:44,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:14:44,520 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:44,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash 521305125, now seen corresponding path program 16 times [2024-06-28 03:14:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348067107] [2024-06-28 03:14:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:45,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348067107] [2024-06-28 03:14:45,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348067107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:45,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:45,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:45,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106897258] [2024-06-28 03:14:45,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:45,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:45,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:45,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:45,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:45,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:45,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 816 transitions, 12830 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:45,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:45,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:45,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:47,299 INFO L124 PetriNetUnfolderBase]: 3433/5490 cut-off events. [2024-06-28 03:14:47,299 INFO L125 PetriNetUnfolderBase]: For 2442119/2442127 co-relation queries the response was YES. [2024-06-28 03:14:47,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86034 conditions, 5490 events. 3433/5490 cut-off events. For 2442119/2442127 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 33519 event pairs, 510 based on Foata normal form. 10/5499 useless extension candidates. Maximal degree in co-relation 85782. Up to 4590 conditions per place. [2024-06-28 03:14:47,611 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 599 selfloop transitions, 239 changer transitions 0/843 dead transitions. [2024-06-28 03:14:47,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 843 transitions, 16027 flow [2024-06-28 03:14:47,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:14:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:14:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:14:47,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-28 03:14:47,613 INFO L175 Difference]: Start difference. First operand has 531 places, 816 transitions, 12830 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:14:47,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 843 transitions, 16027 flow [2024-06-28 03:14:56,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 843 transitions, 15433 flow, removed 129 selfloop flow, removed 6 redundant places. [2024-06-28 03:14:56,500 INFO L231 Difference]: Finished difference. Result has 534 places, 823 transitions, 13058 flow [2024-06-28 03:14:56,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12236, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13058, PETRI_PLACES=534, PETRI_TRANSITIONS=823} [2024-06-28 03:14:56,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 492 predicate places. [2024-06-28 03:14:56,501 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 823 transitions, 13058 flow [2024-06-28 03:14:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:56,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:56,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:56,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:14:56,502 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:14:56,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1901647578, now seen corresponding path program 25 times [2024-06-28 03:14:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573845039] [2024-06-28 03:14:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573845039] [2024-06-28 03:14:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573845039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:57,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:57,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:14:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765554941] [2024-06-28 03:14:57,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:14:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:14:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:14:57,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:14:57,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 823 transitions, 13058 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:57,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:57,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:14:57,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:59,676 INFO L124 PetriNetUnfolderBase]: 3443/5496 cut-off events. [2024-06-28 03:14:59,676 INFO L125 PetriNetUnfolderBase]: For 2450194/2450194 co-relation queries the response was YES. [2024-06-28 03:14:59,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86452 conditions, 5496 events. 3443/5496 cut-off events. For 2450194/2450194 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 33444 event pairs, 503 based on Foata normal form. 1/5496 useless extension candidates. Maximal degree in co-relation 86199. Up to 5023 conditions per place. [2024-06-28 03:15:00,014 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 765 selfloop transitions, 72 changer transitions 0/842 dead transitions. [2024-06-28 03:15:00,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 842 transitions, 15119 flow [2024-06-28 03:15:00,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:15:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:15:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 03:15:00,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073170731707317 [2024-06-28 03:15:00,015 INFO L175 Difference]: Start difference. First operand has 534 places, 823 transitions, 13058 flow. Second operand 10 states and 167 transitions. [2024-06-28 03:15:00,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 842 transitions, 15119 flow [2024-06-28 03:15:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 842 transitions, 14674 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-28 03:15:07,864 INFO L231 Difference]: Finished difference. Result has 540 places, 829 transitions, 13057 flow [2024-06-28 03:15:07,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12613, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13057, PETRI_PLACES=540, PETRI_TRANSITIONS=829} [2024-06-28 03:15:07,864 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 498 predicate places. [2024-06-28 03:15:07,864 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 829 transitions, 13057 flow [2024-06-28 03:15:07,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:07,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:07,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:07,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:15:07,865 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:07,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:07,865 INFO L85 PathProgramCache]: Analyzing trace with hash 844538510, now seen corresponding path program 26 times [2024-06-28 03:15:07,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:07,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898741195] [2024-06-28 03:15:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:07,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:08,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:08,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898741195] [2024-06-28 03:15:08,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898741195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:08,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:08,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438098917] [2024-06-28 03:15:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:08,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:15:08,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 829 transitions, 13057 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:08,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:08,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:15:08,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:10,937 INFO L124 PetriNetUnfolderBase]: 3448/5505 cut-off events. [2024-06-28 03:15:10,937 INFO L125 PetriNetUnfolderBase]: For 2483591/2483591 co-relation queries the response was YES. [2024-06-28 03:15:11,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86522 conditions, 5505 events. 3448/5505 cut-off events. For 2483591/2483591 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 33530 event pairs, 502 based on Foata normal form. 1/5505 useless extension candidates. Maximal degree in co-relation 86267. Up to 5036 conditions per place. [2024-06-28 03:15:11,062 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 768 selfloop transitions, 70 changer transitions 0/843 dead transitions. [2024-06-28 03:15:11,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 843 transitions, 15019 flow [2024-06-28 03:15:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:15:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:15:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 03:15:11,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-28 03:15:11,063 INFO L175 Difference]: Start difference. First operand has 540 places, 829 transitions, 13057 flow. Second operand 9 states and 152 transitions. [2024-06-28 03:15:11,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 843 transitions, 15019 flow [2024-06-28 03:15:18,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 843 transitions, 14644 flow, removed 122 selfloop flow, removed 7 redundant places. [2024-06-28 03:15:18,169 INFO L231 Difference]: Finished difference. Result has 542 places, 832 transitions, 13086 flow [2024-06-28 03:15:18,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12682, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13086, PETRI_PLACES=542, PETRI_TRANSITIONS=832} [2024-06-28 03:15:18,169 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 500 predicate places. [2024-06-28 03:15:18,169 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 832 transitions, 13086 flow [2024-06-28 03:15:18,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:18,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:18,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:18,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:15:18,170 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:18,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:18,170 INFO L85 PathProgramCache]: Analyzing trace with hash 837295670, now seen corresponding path program 27 times [2024-06-28 03:15:18,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:18,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000713185] [2024-06-28 03:15:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:18,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:19,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:19,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000713185] [2024-06-28 03:15:19,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000713185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:19,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:19,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:19,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78718724] [2024-06-28 03:15:19,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:19,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:19,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:19,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:15:19,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 832 transitions, 13086 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:19,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:19,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:15:19,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:21,176 INFO L124 PetriNetUnfolderBase]: 3442/5502 cut-off events. [2024-06-28 03:15:21,176 INFO L125 PetriNetUnfolderBase]: For 2496140/2496142 co-relation queries the response was YES. [2024-06-28 03:15:21,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86179 conditions, 5502 events. 3442/5502 cut-off events. For 2496140/2496142 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 33595 event pairs, 537 based on Foata normal form. 4/5505 useless extension candidates. Maximal degree in co-relation 85923. Up to 4721 conditions per place. [2024-06-28 03:15:21,301 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 697 selfloop transitions, 146 changer transitions 0/848 dead transitions. [2024-06-28 03:15:21,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 848 transitions, 15068 flow [2024-06-28 03:15:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:15:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:15:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:15:21,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:15:21,302 INFO L175 Difference]: Start difference. First operand has 542 places, 832 transitions, 13086 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:15:21,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 848 transitions, 15068 flow [2024-06-28 03:15:28,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 848 transitions, 14392 flow, removed 256 selfloop flow, removed 8 redundant places. [2024-06-28 03:15:28,624 INFO L231 Difference]: Finished difference. Result has 543 places, 832 transitions, 12709 flow [2024-06-28 03:15:28,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12410, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12709, PETRI_PLACES=543, PETRI_TRANSITIONS=832} [2024-06-28 03:15:28,625 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 501 predicate places. [2024-06-28 03:15:28,625 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 832 transitions, 12709 flow [2024-06-28 03:15:28,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:28,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:28,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:28,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:15:28,625 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:28,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:28,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1834115050, now seen corresponding path program 19 times [2024-06-28 03:15:28,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:28,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383287150] [2024-06-28 03:15:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:28,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:29,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:29,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383287150] [2024-06-28 03:15:29,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383287150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:29,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:29,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:29,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141205839] [2024-06-28 03:15:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:29,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:29,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:29,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:15:29,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 832 transitions, 12709 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:29,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:29,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:15:29,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:31,909 INFO L124 PetriNetUnfolderBase]: 3439/5503 cut-off events. [2024-06-28 03:15:31,909 INFO L125 PetriNetUnfolderBase]: For 2478558/2478566 co-relation queries the response was YES. [2024-06-28 03:15:31,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85625 conditions, 5503 events. 3439/5503 cut-off events. For 2478558/2478566 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 33606 event pairs, 514 based on Foata normal form. 9/5511 useless extension candidates. Maximal degree in co-relation 85370. Up to 4965 conditions per place. [2024-06-28 03:15:32,026 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 752 selfloop transitions, 88 changer transitions 0/845 dead transitions. [2024-06-28 03:15:32,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 845 transitions, 14439 flow [2024-06-28 03:15:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:15:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:15:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:15:32,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:15:32,028 INFO L175 Difference]: Start difference. First operand has 543 places, 832 transitions, 12709 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:15:32,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 845 transitions, 14439 flow [2024-06-28 03:15:40,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 845 transitions, 13771 flow, removed 155 selfloop flow, removed 9 redundant places. [2024-06-28 03:15:40,344 INFO L231 Difference]: Finished difference. Result has 543 places, 832 transitions, 12223 flow [2024-06-28 03:15:40,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12041, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12223, PETRI_PLACES=543, PETRI_TRANSITIONS=832} [2024-06-28 03:15:40,345 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 501 predicate places. [2024-06-28 03:15:40,345 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 832 transitions, 12223 flow [2024-06-28 03:15:40,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:40,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:40,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:40,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:15:40,346 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:40,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1912759621, now seen corresponding path program 17 times [2024-06-28 03:15:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:40,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728606485] [2024-06-28 03:15:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:41,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:41,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728606485] [2024-06-28 03:15:41,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728606485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:41,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:41,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094083983] [2024-06-28 03:15:41,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:41,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:41,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:15:41,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 832 transitions, 12223 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:41,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:41,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:15:41,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:43,567 INFO L124 PetriNetUnfolderBase]: 3436/5497 cut-off events. [2024-06-28 03:15:43,567 INFO L125 PetriNetUnfolderBase]: For 2467362/2467370 co-relation queries the response was YES. [2024-06-28 03:15:43,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84545 conditions, 5497 events. 3436/5497 cut-off events. For 2467362/2467370 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 33573 event pairs, 512 based on Foata normal form. 9/5505 useless extension candidates. Maximal degree in co-relation 84290. Up to 4919 conditions per place. [2024-06-28 03:15:43,682 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 729 selfloop transitions, 118 changer transitions 0/852 dead transitions. [2024-06-28 03:15:43,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 852 transitions, 14217 flow [2024-06-28 03:15:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:15:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:15:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:15:43,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:15:43,683 INFO L175 Difference]: Start difference. First operand has 543 places, 832 transitions, 12223 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:15:43,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 852 transitions, 14217 flow [2024-06-28 03:15:51,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 852 transitions, 13914 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:15:51,261 INFO L231 Difference]: Finished difference. Result has 544 places, 840 transitions, 12457 flow [2024-06-28 03:15:51,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11920, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12457, PETRI_PLACES=544, PETRI_TRANSITIONS=840} [2024-06-28 03:15:51,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 502 predicate places. [2024-06-28 03:15:51,261 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 840 transitions, 12457 flow [2024-06-28 03:15:51,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:51,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:51,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:15:51,262 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:15:51,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:51,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1303549594, now seen corresponding path program 20 times [2024-06-28 03:15:51,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:51,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310344337] [2024-06-28 03:15:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:52,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:52,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310344337] [2024-06-28 03:15:52,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310344337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:52,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:52,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:15:52,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807662277] [2024-06-28 03:15:52,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:52,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:15:52,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:52,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:15:52,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:15:52,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:15:52,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 840 transitions, 12457 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:52,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:52,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:15:52,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:54,695 INFO L124 PetriNetUnfolderBase]: 3433/5493 cut-off events. [2024-06-28 03:15:54,696 INFO L125 PetriNetUnfolderBase]: For 2452700/2452708 co-relation queries the response was YES. [2024-06-28 03:15:54,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83830 conditions, 5493 events. 3433/5493 cut-off events. For 2452700/2452708 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 33528 event pairs, 512 based on Foata normal form. 9/5501 useless extension candidates. Maximal degree in co-relation 83574. Up to 4809 conditions per place. [2024-06-28 03:15:54,807 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 669 selfloop transitions, 177 changer transitions 0/851 dead transitions. [2024-06-28 03:15:54,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 851 transitions, 14183 flow [2024-06-28 03:15:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:15:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:15:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:15:54,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:15:54,808 INFO L175 Difference]: Start difference. First operand has 544 places, 840 transitions, 12457 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:15:54,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 851 transitions, 14183 flow [2024-06-28 03:16:02,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 851 transitions, 13670 flow, removed 197 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:02,639 INFO L231 Difference]: Finished difference. Result has 548 places, 840 transitions, 12304 flow [2024-06-28 03:16:02,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11944, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=840, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12304, PETRI_PLACES=548, PETRI_TRANSITIONS=840} [2024-06-28 03:16:02,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 506 predicate places. [2024-06-28 03:16:02,640 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 840 transitions, 12304 flow [2024-06-28 03:16:02,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:02,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:02,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:02,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:16:02,641 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:02,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:02,641 INFO L85 PathProgramCache]: Analyzing trace with hash 521304722, now seen corresponding path program 28 times [2024-06-28 03:16:02,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:02,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972639576] [2024-06-28 03:16:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:02,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:03,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:03,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972639576] [2024-06-28 03:16:03,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972639576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:03,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:03,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:16:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623657433] [2024-06-28 03:16:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:03,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:16:03,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:16:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:16:03,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:16:03,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 840 transitions, 12304 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:03,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:03,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:16:03,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:05,698 INFO L124 PetriNetUnfolderBase]: 3438/5505 cut-off events. [2024-06-28 03:16:05,698 INFO L125 PetriNetUnfolderBase]: For 2477039/2477041 co-relation queries the response was YES. [2024-06-28 03:16:05,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84256 conditions, 5505 events. 3438/5505 cut-off events. For 2477039/2477041 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 33756 event pairs, 538 based on Foata normal form. 3/5507 useless extension candidates. Maximal degree in co-relation 83998. Up to 4435 conditions per place. [2024-06-28 03:16:05,814 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 545 selfloop transitions, 309 changer transitions 0/859 dead transitions. [2024-06-28 03:16:05,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 859 transitions, 14982 flow [2024-06-28 03:16:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:16:05,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:16:05,816 INFO L175 Difference]: Start difference. First operand has 548 places, 840 transitions, 12304 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:16:05,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 859 transitions, 14982 flow