./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 21:33:52,303 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 21:33:52,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 21:33:52,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 21:33:52,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 21:33:52,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 21:33:52,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 21:33:52,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 21:33:52,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 21:33:52,392 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 21:33:52,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 21:33:52,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 21:33:52,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 21:33:52,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 21:33:52,395 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 21:33:52,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 21:33:52,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 21:33:52,396 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 21:33:52,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 21:33:52,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 21:33:52,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 21:33:52,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 21:33:52,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 21:33:52,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 21:33:52,398 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 21:33:52,398 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 21:33:52,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 21:33:52,398 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 21:33:52,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 21:33:52,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 21:33:52,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 21:33:52,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 21:33:52,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 21:33:52,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 21:33:52,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 21:33:52,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 21:33:52,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 21:33:52,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 21:33:52,402 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 21:33:52,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 21:33:52,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 21:33:52,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 21:33:52,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 21:33:52,403 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 21:33:52,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 21:33:52,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 21:33:52,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 21:33:52,666 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 21:33:52,666 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 21:33:52,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-21 21:33:52,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 21:33:52,801 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 21:33:52,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 21:33:53,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 21:33:54,090 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 21:33:54,092 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 21:33:54,101 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b991249b6/4895951790fe487d9629472e99a7b6c0/FLAG0cd358404 [2024-06-21 21:33:54,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b991249b6/4895951790fe487d9629472e99a7b6c0 [2024-06-21 21:33:54,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 21:33:54,112 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 21:33:54,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 21:33:54,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 21:33:54,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 21:33:54,117 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:33:52" (1/2) ... [2024-06-21 21:33:54,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9bafcf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:33:54, skipping insertion in model container [2024-06-21 21:33:54,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:33:52" (1/2) ... [2024-06-21 21:33:54,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@bf290cd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:33:54, skipping insertion in model container [2024-06-21 21:33:54,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 09:33:54" (2/2) ... [2024-06-21 21:33:54,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9bafcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54, skipping insertion in model container [2024-06-21 21:33:54,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 09:33:54" (2/2) ... [2024-06-21 21:33:54,120 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 21:33:54,208 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 21:33:54,209 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-21 21:33:54,209 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-21 21:33:54,209 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-21 21:33:54,210 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 21:33:54,210 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-21 21:33:54,246 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 21:33:54,564 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 21:33:54,573 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 21:33:54,697 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 21:33:54,746 INFO L206 MainTranslator]: Completed translation [2024-06-21 21:33:54,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54 WrapperNode [2024-06-21 21:33:54,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 21:33:54,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 21:33:54,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 21:33:54,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 21:33:54,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,811 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 125 [2024-06-21 21:33:54,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 21:33:54,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 21:33:54,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 21:33:54,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 21:33:54,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,824 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,837 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-21 21:33:54,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 21:33:54,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 21:33:54,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 21:33:54,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 21:33:54,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (1/1) ... [2024-06-21 21:33:54,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 21:33:54,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 21:33:54,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 21:33:54,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-21 21:33:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 21:33:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 21:33:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 21:33:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 21:33:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 21:33:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 21:33:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 21:33:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 21:33:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 21:33:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 21:33:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 21:33:54,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 21:33:54,959 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 21:33:55,139 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 21:33:55,142 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 21:33:55,438 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 21:33:55,438 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 21:33:55,565 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 21:33:55,566 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 21:33:55,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 09:33:55 BoogieIcfgContainer [2024-06-21 21:33:55,566 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 21:33:55,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 21:33:55,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 21:33:55,570 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 21:33:55,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:33:52" (1/4) ... [2024-06-21 21:33:55,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127051b1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 09:33:55, skipping insertion in model container [2024-06-21 21:33:55,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 09:33:54" (2/4) ... [2024-06-21 21:33:55,571 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127051b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 09:33:55, skipping insertion in model container [2024-06-21 21:33:55,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:33:54" (3/4) ... [2024-06-21 21:33:55,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@127051b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 09:33:55, skipping insertion in model container [2024-06-21 21:33:55,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 09:33:55" (4/4) ... [2024-06-21 21:33:55,578 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 21:33:55,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 21:33:55,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 21:33:55,593 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 21:33:55,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 21:33:55,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-21 21:33:55,670 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-21 21:33:55,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 21:33:55,672 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 5. Compared 68 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. [2024-06-21 21:33:55,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-21 21:33:55,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-21 21:33:55,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 21:33:55,694 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;@43aa7d09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 21:33:55,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 21:33:55,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 21:33:55,702 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 21:33:55,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 21:33:55,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:55,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 21:33:55,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:55,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 362811812, now seen corresponding path program 1 times [2024-06-21 21:33:55,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:55,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290473834] [2024-06-21 21:33:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:55,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290473834] [2024-06-21 21:33:56,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290473834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:56,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:56,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 21:33:56,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658668182] [2024-06-21 21:33:56,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:56,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 21:33:56,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:56,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 21:33:56,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 21:33:56,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-21 21:33:56,516 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) [2024-06-21 21:33:56,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:56,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-21 21:33:56,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:56,744 INFO L124 PetriNetUnfolderBase]: 942/1465 cut-off events. [2024-06-21 21:33:56,745 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-21 21:33:56,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 1465 events. 942/1465 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7311 event pairs, 546 based on Foata normal form. 2/1427 useless extension candidates. Maximal degree in co-relation 2969. Up to 1428 conditions per place. [2024-06-21 21:33:56,755 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-21 21:33:56,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 171 flow [2024-06-21 21:33:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 21:33:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 21:33:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-21 21:33:56,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504065040650406 [2024-06-21 21:33:56,765 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 80 transitions. [2024-06-21 21:33:56,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 171 flow [2024-06-21 21:33:56,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 21:33:56,769 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-21 21:33:56,770 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} [2024-06-21 21:33:56,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-21 21:33:56,773 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-21 21:33:56,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:56,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:56,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:56,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 21:33:56,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:56,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash 769830979, now seen corresponding path program 1 times [2024-06-21 21:33:56,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:56,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109826996] [2024-06-21 21:33:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:57,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:57,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109826996] [2024-06-21 21:33:57,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109826996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:57,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:57,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 21:33:57,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805525553] [2024-06-21 21:33:57,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:57,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 21:33:57,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:57,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 21:33:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 21:33:57,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-21 21:33:57,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:57,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:57,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-21 21:33:57,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:57,479 INFO L124 PetriNetUnfolderBase]: 1338/2027 cut-off events. [2024-06-21 21:33:57,479 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-06-21 21:33:57,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 2027 events. 1338/2027 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9649 event pairs, 712 based on Foata normal form. 6/2031 useless extension candidates. Maximal degree in co-relation 4649. Up to 1969 conditions per place. [2024-06-21 21:33:57,488 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-21 21:33:57,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 258 flow [2024-06-21 21:33:57,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 21:33:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 21:33:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-06-21 21:33:57,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-06-21 21:33:57,490 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 98 transitions. [2024-06-21 21:33:57,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 258 flow [2024-06-21 21:33:57,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 21:33:57,492 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 152 flow [2024-06-21 21:33:57,492 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-21 21:33:57,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-21 21:33:57,493 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 152 flow [2024-06-21 21:33:57,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:57,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:57,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:57,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 21:33:57,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:57,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1615943924, now seen corresponding path program 1 times [2024-06-21 21:33:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:57,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470988925] [2024-06-21 21:33:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:58,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470988925] [2024-06-21 21:33:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470988925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:58,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 21:33:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730932450] [2024-06-21 21:33:58,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:58,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 21:33:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 21:33:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 21:33:58,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-21 21:33:58,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:58,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:58,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-21 21:33:58,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:58,321 INFO L124 PetriNetUnfolderBase]: 980/1539 cut-off events. [2024-06-21 21:33:58,321 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES. [2024-06-21 21:33:58,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3922 conditions, 1539 events. 980/1539 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7617 event pairs, 562 based on Foata normal form. 3/1498 useless extension candidates. Maximal degree in co-relation 3906. Up to 1473 conditions per place. [2024-06-21 21:33:58,329 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 40 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-21 21:33:58,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 306 flow [2024-06-21 21:33:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:33:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:33:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-21 21:33:58,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-21 21:33:58,331 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 152 flow. Second operand 5 states and 105 transitions. [2024-06-21 21:33:58,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 306 flow [2024-06-21 21:33:58,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 304 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-21 21:33:58,333 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 221 flow [2024-06-21 21:33:58,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-06-21 21:33:58,334 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-21 21:33:58,334 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 221 flow [2024-06-21 21:33:58,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:33:58,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:58,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:58,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 21:33:58,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:58,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash 580485505, now seen corresponding path program 1 times [2024-06-21 21:33:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:58,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585632635] [2024-06-21 21:33:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:33:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:33:59,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:33:59,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585632635] [2024-06-21 21:33:59,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585632635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:33:59,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:33:59,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 21:33:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105165234] [2024-06-21 21:33:59,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:33:59,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 21:33:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:33:59,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 21:33:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 21:33:59,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-21 21:33:59,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 221 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) [2024-06-21 21:33:59,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:33:59,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-21 21:33:59,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:33:59,468 INFO L124 PetriNetUnfolderBase]: 1323/2004 cut-off events. [2024-06-21 21:33:59,468 INFO L125 PetriNetUnfolderBase]: For 1874/1874 co-relation queries the response was YES. [2024-06-21 21:33:59,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5794 conditions, 2004 events. 1323/2004 cut-off events. For 1874/1874 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9554 event pairs, 467 based on Foata normal form. 6/2008 useless extension candidates. Maximal degree in co-relation 5774. Up to 1916 conditions per place. [2024-06-21 21:33:59,480 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 59 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-21 21:33:59,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 445 flow [2024-06-21 21:33:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:33:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:33:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-21 21:33:59,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556910569105691 [2024-06-21 21:33:59,482 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 221 flow. Second operand 6 states and 137 transitions. [2024-06-21 21:33:59,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 445 flow [2024-06-21 21:33:59,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 432 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-21 21:33:59,485 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 265 flow [2024-06-21 21:33:59,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-21 21:33:59,486 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-21 21:33:59,486 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 265 flow [2024-06-21 21:33:59,486 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) [2024-06-21 21:33:59,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:33:59,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:33:59,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 21:33:59,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:33:59,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:33:59,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1411385553, now seen corresponding path program 1 times [2024-06-21 21:33:59,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:33:59,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835075785] [2024-06-21 21:33:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:33:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:33:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:00,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:00,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835075785] [2024-06-21 21:34:00,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835075785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:00,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:00,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:34:00,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392904626] [2024-06-21 21:34:00,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:00,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:34:00,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:34:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:34:00,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:00,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 265 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) [2024-06-21 21:34:00,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:00,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:00,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:00,484 INFO L124 PetriNetUnfolderBase]: 1378/2095 cut-off events. [2024-06-21 21:34:00,484 INFO L125 PetriNetUnfolderBase]: For 3089/3089 co-relation queries the response was YES. [2024-06-21 21:34:00,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 2095 events. 1378/2095 cut-off events. For 3089/3089 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10095 event pairs, 516 based on Foata normal form. 6/2097 useless extension candidates. Maximal degree in co-relation 6510. Up to 1942 conditions per place. [2024-06-21 21:34:00,495 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 59 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-21 21:34:00,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 523 flow [2024-06-21 21:34:00,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:34:00,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:34:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-21 21:34:00,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-21 21:34:00,497 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 265 flow. Second operand 6 states and 120 transitions. [2024-06-21 21:34:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 523 flow [2024-06-21 21:34:00,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 498 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-21 21:34:00,500 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 340 flow [2024-06-21 21:34:00,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-06-21 21:34:00,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2024-06-21 21:34:00,501 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 340 flow [2024-06-21 21:34:00,502 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) [2024-06-21 21:34:00,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:00,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:00,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 21:34:00,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:00,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:00,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1104866197, now seen corresponding path program 1 times [2024-06-21 21:34:00,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:00,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923351368] [2024-06-21 21:34:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:01,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923351368] [2024-06-21 21:34:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923351368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:01,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:34:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818081478] [2024-06-21 21:34:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:34:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:34:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:34:01,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:01,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 340 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) [2024-06-21 21:34:01,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:01,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:01,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:01,499 INFO L124 PetriNetUnfolderBase]: 1412/2162 cut-off events. [2024-06-21 21:34:01,499 INFO L125 PetriNetUnfolderBase]: For 4830/4830 co-relation queries the response was YES. [2024-06-21 21:34:01,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7599 conditions, 2162 events. 1412/2162 cut-off events. For 4830/4830 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10418 event pairs, 547 based on Foata normal form. 4/2164 useless extension candidates. Maximal degree in co-relation 7573. Up to 2069 conditions per place. [2024-06-21 21:34:01,510 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 69 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2024-06-21 21:34:01,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 622 flow [2024-06-21 21:34:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:01,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-21 21:34:01,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46689895470383275 [2024-06-21 21:34:01,512 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 340 flow. Second operand 7 states and 134 transitions. [2024-06-21 21:34:01,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 622 flow [2024-06-21 21:34:01,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 606 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-21 21:34:01,520 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 432 flow [2024-06-21 21:34:01,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-21 21:34:01,522 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-21 21:34:01,522 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 432 flow [2024-06-21 21:34:01,522 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) [2024-06-21 21:34:01,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:01,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:01,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 21:34:01,523 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:01,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash -587341517, now seen corresponding path program 2 times [2024-06-21 21:34:01,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:01,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106740064] [2024-06-21 21:34:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:01,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:02,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106740064] [2024-06-21 21:34:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106740064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:02,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:34:02,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577600290] [2024-06-21 21:34:02,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:02,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:34:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:34:02,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:34:02,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:02,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 432 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) [2024-06-21 21:34:02,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:02,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:02,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:02,597 INFO L124 PetriNetUnfolderBase]: 1434/2199 cut-off events. [2024-06-21 21:34:02,597 INFO L125 PetriNetUnfolderBase]: For 6358/6358 co-relation queries the response was YES. [2024-06-21 21:34:02,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 2199 events. 1434/2199 cut-off events. For 6358/6358 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10686 event pairs, 538 based on Foata normal form. 4/2201 useless extension candidates. Maximal degree in co-relation 8055. Up to 2083 conditions per place. [2024-06-21 21:34:02,617 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 67 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2024-06-21 21:34:02,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 684 flow [2024-06-21 21:34:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:34:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:34:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-21 21:34:02,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-21 21:34:02,619 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 432 flow. Second operand 6 states and 116 transitions. [2024-06-21 21:34:02,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 684 flow [2024-06-21 21:34:02,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 645 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:02,626 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 473 flow [2024-06-21 21:34:02,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-06-21 21:34:02,627 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-21 21:34:02,627 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 473 flow [2024-06-21 21:34:02,627 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) [2024-06-21 21:34:02,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:02,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:02,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 21:34:02,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:02,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:02,628 INFO L85 PathProgramCache]: Analyzing trace with hash -553200287, now seen corresponding path program 3 times [2024-06-21 21:34:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:02,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136072878] [2024-06-21 21:34:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:02,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136072878] [2024-06-21 21:34:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136072878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:34:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271120000] [2024-06-21 21:34:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:03,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:34:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:34:03,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:34:03,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:03,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 473 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) [2024-06-21 21:34:03,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:03,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:03,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:03,597 INFO L124 PetriNetUnfolderBase]: 1408/2158 cut-off events. [2024-06-21 21:34:03,597 INFO L125 PetriNetUnfolderBase]: For 7628/7628 co-relation queries the response was YES. [2024-06-21 21:34:03,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8140 conditions, 2158 events. 1408/2158 cut-off events. For 7628/7628 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10438 event pairs, 542 based on Foata normal form. 8/2160 useless extension candidates. Maximal degree in co-relation 8110. Up to 1948 conditions per place. [2024-06-21 21:34:03,613 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 61 selfloop transitions, 24 changer transitions 0/90 dead transitions. [2024-06-21 21:34:03,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 712 flow [2024-06-21 21:34:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:34:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:34:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-21 21:34:03,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-21 21:34:03,616 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 473 flow. Second operand 6 states and 118 transitions. [2024-06-21 21:34:03,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 712 flow [2024-06-21 21:34:03,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 662 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 21:34:03,627 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 512 flow [2024-06-21 21:34:03,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-21 21:34:03,629 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-21 21:34:03,629 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 512 flow [2024-06-21 21:34:03,630 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) [2024-06-21 21:34:03,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:03,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:03,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 21:34:03,630 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:03,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1856094539, now seen corresponding path program 1 times [2024-06-21 21:34:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404133080] [2024-06-21 21:34:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:03,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404133080] [2024-06-21 21:34:04,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404133080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:04,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:04,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571203911] [2024-06-21 21:34:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:04,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:04,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:04,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:04,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 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) [2024-06-21 21:34:04,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:04,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:04,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:04,710 INFO L124 PetriNetUnfolderBase]: 1414/2177 cut-off events. [2024-06-21 21:34:04,710 INFO L125 PetriNetUnfolderBase]: For 7521/7521 co-relation queries the response was YES. [2024-06-21 21:34:04,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8250 conditions, 2177 events. 1414/2177 cut-off events. For 7521/7521 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10585 event pairs, 501 based on Foata normal form. 4/2175 useless extension candidates. Maximal degree in co-relation 8218. Up to 1999 conditions per place. [2024-06-21 21:34:04,723 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 74 selfloop transitions, 28 changer transitions 0/107 dead transitions. [2024-06-21 21:34:04,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 896 flow [2024-06-21 21:34:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-21 21:34:04,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46689895470383275 [2024-06-21 21:34:04,724 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 512 flow. Second operand 7 states and 134 transitions. [2024-06-21 21:34:04,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 896 flow [2024-06-21 21:34:04,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 848 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 21:34:04,733 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 699 flow [2024-06-21 21:34:04,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=699, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-06-21 21:34:04,733 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-06-21 21:34:04,734 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 699 flow [2024-06-21 21:34:04,734 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) [2024-06-21 21:34:04,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:04,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:04,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 21:34:04,734 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)] === [2024-06-21 21:34:04,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1704357308, now seen corresponding path program 1 times [2024-06-21 21:34:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:04,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464428704] [2024-06-21 21:34:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:04,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:05,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:05,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464428704] [2024-06-21 21:34:05,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464428704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:05,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:05,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:05,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838490887] [2024-06-21 21:34:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:05,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:05,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:05,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 699 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:05,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:05,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:05,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:06,177 INFO L124 PetriNetUnfolderBase]: 1423/2192 cut-off events. [2024-06-21 21:34:06,177 INFO L125 PetriNetUnfolderBase]: For 9389/9389 co-relation queries the response was YES. [2024-06-21 21:34:06,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8961 conditions, 2192 events. 1423/2192 cut-off events. For 9389/9389 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10695 event pairs, 467 based on Foata normal form. 8/2194 useless extension candidates. Maximal degree in co-relation 8926. Up to 1978 conditions per place. [2024-06-21 21:34:06,189 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 79 selfloop transitions, 31 changer transitions 0/115 dead transitions. [2024-06-21 21:34:06,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 115 transitions, 1017 flow [2024-06-21 21:34:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:34:06,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:34:06,191 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 699 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:34:06,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 115 transitions, 1017 flow [2024-06-21 21:34:06,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 954 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-21 21:34:06,204 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 738 flow [2024-06-21 21:34:06,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=738, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2024-06-21 21:34:06,206 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-21 21:34:06,206 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 738 flow [2024-06-21 21:34:06,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:06,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:06,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:06,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 21:34:06,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:06,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash -816536174, now seen corresponding path program 1 times [2024-06-21 21:34:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:06,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305713806] [2024-06-21 21:34:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:07,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:07,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305713806] [2024-06-21 21:34:07,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305713806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:07,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:07,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:07,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588069039] [2024-06-21 21:34:07,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:07,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:07,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:07,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:07,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:07,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 738 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) [2024-06-21 21:34:07,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:07,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:07,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:07,573 INFO L124 PetriNetUnfolderBase]: 1418/2188 cut-off events. [2024-06-21 21:34:07,573 INFO L125 PetriNetUnfolderBase]: For 10690/10690 co-relation queries the response was YES. [2024-06-21 21:34:07,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 2188 events. 1418/2188 cut-off events. For 10690/10690 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10676 event pairs, 474 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 9273. Up to 2068 conditions per place. [2024-06-21 21:34:07,588 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 96 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2024-06-21 21:34:07,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 118 transitions, 1062 flow [2024-06-21 21:34:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-21 21:34:07,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-21 21:34:07,590 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 738 flow. Second operand 7 states and 135 transitions. [2024-06-21 21:34:07,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 118 transitions, 1062 flow [2024-06-21 21:34:07,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 118 transitions, 986 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:07,602 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 734 flow [2024-06-21 21:34:07,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=734, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2024-06-21 21:34:07,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-21 21:34:07,603 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 734 flow [2024-06-21 21:34:07,603 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) [2024-06-21 21:34:07,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:07,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:07,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 21:34:07,604 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:07,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1141422218, now seen corresponding path program 1 times [2024-06-21 21:34:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:07,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41862849] [2024-06-21 21:34:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:07,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41862849] [2024-06-21 21:34:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41862849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:08,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:08,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164529944] [2024-06-21 21:34:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:08,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:08,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:08,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:08,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:08,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:08,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 734 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:08,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:08,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:08,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:08,769 INFO L124 PetriNetUnfolderBase]: 1429/2201 cut-off events. [2024-06-21 21:34:08,769 INFO L125 PetriNetUnfolderBase]: For 12757/12757 co-relation queries the response was YES. [2024-06-21 21:34:08,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 2201 events. 1429/2201 cut-off events. For 12757/12757 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10724 event pairs, 477 based on Foata normal form. 2/2197 useless extension candidates. Maximal degree in co-relation 9607. Up to 2003 conditions per place. [2024-06-21 21:34:08,780 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 87 selfloop transitions, 29 changer transitions 0/121 dead transitions. [2024-06-21 21:34:08,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 121 transitions, 1116 flow [2024-06-21 21:34:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:08,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-21 21:34:08,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-21 21:34:08,781 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 734 flow. Second operand 7 states and 135 transitions. [2024-06-21 21:34:08,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 121 transitions, 1116 flow [2024-06-21 21:34:08,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 1068 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:08,792 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 806 flow [2024-06-21 21:34:08,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=806, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-06-21 21:34:08,793 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2024-06-21 21:34:08,793 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 806 flow [2024-06-21 21:34:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:08,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:08,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:08,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 21:34:08,794 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:08,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:08,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1295162892, now seen corresponding path program 2 times [2024-06-21 21:34:08,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:08,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067451310] [2024-06-21 21:34:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:08,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:09,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:09,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067451310] [2024-06-21 21:34:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067451310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:09,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:09,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503227938] [2024-06-21 21:34:09,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:09,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:09,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:09,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:09,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:09,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 806 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:09,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:09,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:10,116 INFO L124 PetriNetUnfolderBase]: 1435/2210 cut-off events. [2024-06-21 21:34:10,116 INFO L125 PetriNetUnfolderBase]: For 15280/15280 co-relation queries the response was YES. [2024-06-21 21:34:10,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10152 conditions, 2210 events. 1435/2210 cut-off events. For 15280/15280 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10721 event pairs, 477 based on Foata normal form. 4/2208 useless extension candidates. Maximal degree in co-relation 10114. Up to 1972 conditions per place. [2024-06-21 21:34:10,132 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 81 selfloop transitions, 37 changer transitions 0/123 dead transitions. [2024-06-21 21:34:10,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 1137 flow [2024-06-21 21:34:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-21 21:34:10,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-21 21:34:10,133 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 806 flow. Second operand 7 states and 136 transitions. [2024-06-21 21:34:10,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 1137 flow [2024-06-21 21:34:10,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 1081 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-21 21:34:10,150 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 873 flow [2024-06-21 21:34:10,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=873, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2024-06-21 21:34:10,151 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-06-21 21:34:10,151 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 873 flow [2024-06-21 21:34:10,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:10,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:10,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:10,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 21:34:10,152 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:10,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1624092371, now seen corresponding path program 1 times [2024-06-21 21:34:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586818021] [2024-06-21 21:34:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:10,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:10,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586818021] [2024-06-21 21:34:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586818021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:10,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:10,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:10,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975861680] [2024-06-21 21:34:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:10,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:10,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:10,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:10,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 873 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:10,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:10,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:10,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:11,432 INFO L124 PetriNetUnfolderBase]: 1469/2261 cut-off events. [2024-06-21 21:34:11,432 INFO L125 PetriNetUnfolderBase]: For 17668/17668 co-relation queries the response was YES. [2024-06-21 21:34:11,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 2261 events. 1469/2261 cut-off events. For 17668/17668 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10999 event pairs, 478 based on Foata normal form. 2/2255 useless extension candidates. Maximal degree in co-relation 10771. Up to 2129 conditions per place. [2024-06-21 21:34:11,446 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 105 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2024-06-21 21:34:11,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 1286 flow [2024-06-21 21:34:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-21 21:34:11,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-21 21:34:11,448 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 873 flow. Second operand 8 states and 145 transitions. [2024-06-21 21:34:11,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 1286 flow [2024-06-21 21:34:11,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 135 transitions, 1173 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:11,465 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 939 flow [2024-06-21 21:34:11,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-06-21 21:34:11,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2024-06-21 21:34:11,465 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 939 flow [2024-06-21 21:34:11,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:11,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:11,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:11,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 21:34:11,466 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)] === [2024-06-21 21:34:11,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:11,467 INFO L85 PathProgramCache]: Analyzing trace with hash 219458003, now seen corresponding path program 2 times [2024-06-21 21:34:11,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:11,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717007714] [2024-06-21 21:34:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:11,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:12,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717007714] [2024-06-21 21:34:12,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717007714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:12,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:12,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350049588] [2024-06-21 21:34:12,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:12,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:12,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:12,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:12,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 939 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:12,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:12,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:12,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:12,689 INFO L124 PetriNetUnfolderBase]: 1464/2252 cut-off events. [2024-06-21 21:34:12,689 INFO L125 PetriNetUnfolderBase]: For 20226/20226 co-relation queries the response was YES. [2024-06-21 21:34:12,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11092 conditions, 2252 events. 1464/2252 cut-off events. For 20226/20226 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10965 event pairs, 464 based on Foata normal form. 2/2244 useless extension candidates. Maximal degree in co-relation 11049. Up to 1971 conditions per place. [2024-06-21 21:34:12,707 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 75 selfloop transitions, 52 changer transitions 0/132 dead transitions. [2024-06-21 21:34:12,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 132 transitions, 1273 flow [2024-06-21 21:34:12,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:34:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:34:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-21 21:34:12,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483739837398374 [2024-06-21 21:34:12,708 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 939 flow. Second operand 6 states and 119 transitions. [2024-06-21 21:34:12,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 132 transitions, 1273 flow [2024-06-21 21:34:12,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 132 transitions, 1227 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-21 21:34:12,726 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 1066 flow [2024-06-21 21:34:12,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1066, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2024-06-21 21:34:12,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2024-06-21 21:34:12,728 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 1066 flow [2024-06-21 21:34:12,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:12,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:12,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 21:34:12,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:12,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2056858795, now seen corresponding path program 1 times [2024-06-21 21:34:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:12,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981188373] [2024-06-21 21:34:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:13,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981188373] [2024-06-21 21:34:13,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981188373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:13,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:13,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:34:13,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757887449] [2024-06-21 21:34:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:13,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:34:13,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:34:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:34:13,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:13,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 1066 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:13,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:13,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:13,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:13,801 INFO L124 PetriNetUnfolderBase]: 1474/2276 cut-off events. [2024-06-21 21:34:13,802 INFO L125 PetriNetUnfolderBase]: For 23475/23475 co-relation queries the response was YES. [2024-06-21 21:34:13,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11742 conditions, 2276 events. 1474/2276 cut-off events. For 23475/23475 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11155 event pairs, 410 based on Foata normal form. 2/2276 useless extension candidates. Maximal degree in co-relation 11697. Up to 2130 conditions per place. [2024-06-21 21:34:13,815 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 115 selfloop transitions, 24 changer transitions 0/144 dead transitions. [2024-06-21 21:34:13,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 144 transitions, 1500 flow [2024-06-21 21:34:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:34:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:34:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-21 21:34:13,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-21 21:34:13,817 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 1066 flow. Second operand 6 states and 116 transitions. [2024-06-21 21:34:13,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 144 transitions, 1500 flow [2024-06-21 21:34:13,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 144 transitions, 1383 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-21 21:34:13,840 INFO L231 Difference]: Finished difference. Result has 100 places, 127 transitions, 1092 flow [2024-06-21 21:34:13,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1092, PETRI_PLACES=100, PETRI_TRANSITIONS=127} [2024-06-21 21:34:13,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-21 21:34:13,841 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 127 transitions, 1092 flow [2024-06-21 21:34:13,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:13,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:13,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:13,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 21:34:13,842 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:13,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1504542205, now seen corresponding path program 1 times [2024-06-21 21:34:13,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:13,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253693190] [2024-06-21 21:34:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:13,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:14,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:14,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253693190] [2024-06-21 21:34:14,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253693190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:14,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:14,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:14,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793554565] [2024-06-21 21:34:14,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:14,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:14,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:14,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:14,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:14,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 127 transitions, 1092 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:14,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:14,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:14,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:15,284 INFO L124 PetriNetUnfolderBase]: 1599/2481 cut-off events. [2024-06-21 21:34:15,284 INFO L125 PetriNetUnfolderBase]: For 27151/27151 co-relation queries the response was YES. [2024-06-21 21:34:15,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12637 conditions, 2481 events. 1599/2481 cut-off events. For 27151/27151 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12433 event pairs, 442 based on Foata normal form. 28/2503 useless extension candidates. Maximal degree in co-relation 12590. Up to 2032 conditions per place. [2024-06-21 21:34:15,300 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 112 selfloop transitions, 51 changer transitions 0/168 dead transitions. [2024-06-21 21:34:15,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 168 transitions, 1675 flow [2024-06-21 21:34:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:34:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:34:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-21 21:34:15,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2024-06-21 21:34:15,302 INFO L175 Difference]: Start difference. First operand has 100 places, 127 transitions, 1092 flow. Second operand 9 states and 179 transitions. [2024-06-21 21:34:15,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 168 transitions, 1675 flow [2024-06-21 21:34:15,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 168 transitions, 1657 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-21 21:34:15,328 INFO L231 Difference]: Finished difference. Result has 109 places, 133 transitions, 1283 flow [2024-06-21 21:34:15,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1283, PETRI_PLACES=109, PETRI_TRANSITIONS=133} [2024-06-21 21:34:15,329 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-06-21 21:34:15,329 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 133 transitions, 1283 flow [2024-06-21 21:34:15,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:15,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:15,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:15,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 21:34:15,330 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:15,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1255868543, now seen corresponding path program 2 times [2024-06-21 21:34:15,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:15,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745730006] [2024-06-21 21:34:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:15,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:16,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:16,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:16,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745730006] [2024-06-21 21:34:16,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745730006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:16,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:16,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:16,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830004199] [2024-06-21 21:34:16,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:16,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:16,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:16,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:16,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:16,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:16,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 133 transitions, 1283 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:16,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:16,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:16,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:16,830 INFO L124 PetriNetUnfolderBase]: 1727/2689 cut-off events. [2024-06-21 21:34:16,830 INFO L125 PetriNetUnfolderBase]: For 33433/33433 co-relation queries the response was YES. [2024-06-21 21:34:16,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14905 conditions, 2689 events. 1727/2689 cut-off events. For 33433/33433 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13817 event pairs, 435 based on Foata normal form. 4/2687 useless extension candidates. Maximal degree in co-relation 14854. Up to 1958 conditions per place. [2024-06-21 21:34:16,849 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 114 selfloop transitions, 51 changer transitions 0/170 dead transitions. [2024-06-21 21:34:16,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 170 transitions, 1911 flow [2024-06-21 21:34:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-21 21:34:16,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49390243902439024 [2024-06-21 21:34:16,851 INFO L175 Difference]: Start difference. First operand has 109 places, 133 transitions, 1283 flow. Second operand 8 states and 162 transitions. [2024-06-21 21:34:16,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 170 transitions, 1911 flow [2024-06-21 21:34:16,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 170 transitions, 1839 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:16,887 INFO L231 Difference]: Finished difference. Result has 112 places, 136 transitions, 1376 flow [2024-06-21 21:34:16,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1376, PETRI_PLACES=112, PETRI_TRANSITIONS=136} [2024-06-21 21:34:16,887 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2024-06-21 21:34:16,887 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 136 transitions, 1376 flow [2024-06-21 21:34:16,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:16,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:16,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:16,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 21:34:16,888 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:16,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1786528235, now seen corresponding path program 2 times [2024-06-21 21:34:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:16,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753444477] [2024-06-21 21:34:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:16,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:17,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:17,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753444477] [2024-06-21 21:34:17,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753444477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:17,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:17,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:34:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992947617] [2024-06-21 21:34:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:17,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:34:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:17,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:34:17,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:34:17,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:17,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 136 transitions, 1376 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:17,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:17,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:17,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:17,935 INFO L124 PetriNetUnfolderBase]: 1741/2724 cut-off events. [2024-06-21 21:34:17,935 INFO L125 PetriNetUnfolderBase]: For 36618/36618 co-relation queries the response was YES. [2024-06-21 21:34:17,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15453 conditions, 2724 events. 1741/2724 cut-off events. For 36618/36618 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14042 event pairs, 463 based on Foata normal form. 6/2728 useless extension candidates. Maximal degree in co-relation 15400. Up to 2553 conditions per place. [2024-06-21 21:34:17,951 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 121 selfloop transitions, 28 changer transitions 0/154 dead transitions. [2024-06-21 21:34:17,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 154 transitions, 1764 flow [2024-06-21 21:34:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:34:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:34:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-21 21:34:17,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073170731707317 [2024-06-21 21:34:17,953 INFO L175 Difference]: Start difference. First operand has 112 places, 136 transitions, 1376 flow. Second operand 5 states and 104 transitions. [2024-06-21 21:34:17,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 154 transitions, 1764 flow [2024-06-21 21:34:17,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 154 transitions, 1673 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-21 21:34:17,997 INFO L231 Difference]: Finished difference. Result has 113 places, 139 transitions, 1402 flow [2024-06-21 21:34:17,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1402, PETRI_PLACES=113, PETRI_TRANSITIONS=139} [2024-06-21 21:34:17,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2024-06-21 21:34:17,997 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 139 transitions, 1402 flow [2024-06-21 21:34:17,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:17,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:17,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:17,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 21:34:17,998 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:17,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2115579889, now seen corresponding path program 1 times [2024-06-21 21:34:17,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:17,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398806193] [2024-06-21 21:34:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:17,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:18,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:18,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398806193] [2024-06-21 21:34:18,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398806193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:18,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:18,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:18,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013460348] [2024-06-21 21:34:18,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:18,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:18,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:18,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:18,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 139 transitions, 1402 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:18,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:18,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:18,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:19,394 INFO L124 PetriNetUnfolderBase]: 1733/2714 cut-off events. [2024-06-21 21:34:19,395 INFO L125 PetriNetUnfolderBase]: For 38415/38415 co-relation queries the response was YES. [2024-06-21 21:34:19,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15745 conditions, 2714 events. 1733/2714 cut-off events. For 38415/38415 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14027 event pairs, 464 based on Foata normal form. 4/2716 useless extension candidates. Maximal degree in co-relation 15690. Up to 2539 conditions per place. [2024-06-21 21:34:19,413 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 138 selfloop transitions, 25 changer transitions 0/168 dead transitions. [2024-06-21 21:34:19,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 168 transitions, 1847 flow [2024-06-21 21:34:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:19,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-21 21:34:19,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-21 21:34:19,416 INFO L175 Difference]: Start difference. First operand has 113 places, 139 transitions, 1402 flow. Second operand 8 states and 149 transitions. [2024-06-21 21:34:19,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 168 transitions, 1847 flow [2024-06-21 21:34:19,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 168 transitions, 1796 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 21:34:19,507 INFO L231 Difference]: Finished difference. Result has 119 places, 142 transitions, 1459 flow [2024-06-21 21:34:19,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1459, PETRI_PLACES=119, PETRI_TRANSITIONS=142} [2024-06-21 21:34:19,507 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-06-21 21:34:19,508 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 142 transitions, 1459 flow [2024-06-21 21:34:19,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:19,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:19,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:19,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 21:34:19,511 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:19,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash 946135221, now seen corresponding path program 2 times [2024-06-21 21:34:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:19,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623413246] [2024-06-21 21:34:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:20,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:20,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623413246] [2024-06-21 21:34:20,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623413246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:20,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:20,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404445636] [2024-06-21 21:34:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:20,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:20,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:20,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:20,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:20,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 142 transitions, 1459 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:20,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:20,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:20,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:21,044 INFO L124 PetriNetUnfolderBase]: 1750/2746 cut-off events. [2024-06-21 21:34:21,044 INFO L125 PetriNetUnfolderBase]: For 42610/42610 co-relation queries the response was YES. [2024-06-21 21:34:21,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16238 conditions, 2746 events. 1750/2746 cut-off events. For 42610/42610 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14235 event pairs, 457 based on Foata normal form. 4/2748 useless extension candidates. Maximal degree in co-relation 16181. Up to 2558 conditions per place. [2024-06-21 21:34:21,061 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 140 selfloop transitions, 27 changer transitions 0/172 dead transitions. [2024-06-21 21:34:21,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 172 transitions, 1915 flow [2024-06-21 21:34:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:34:21,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:34:21,063 INFO L175 Difference]: Start difference. First operand has 119 places, 142 transitions, 1459 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:34:21,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 172 transitions, 1915 flow [2024-06-21 21:34:21,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 172 transitions, 1837 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:21,112 INFO L231 Difference]: Finished difference. Result has 122 places, 144 transitions, 1481 flow [2024-06-21 21:34:21,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1481, PETRI_PLACES=122, PETRI_TRANSITIONS=144} [2024-06-21 21:34:21,112 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-21 21:34:21,113 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 144 transitions, 1481 flow [2024-06-21 21:34:21,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:21,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:21,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:21,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 21:34:21,113 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:21,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash 943278261, now seen corresponding path program 3 times [2024-06-21 21:34:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:21,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783341121] [2024-06-21 21:34:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:21,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:21,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:21,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783341121] [2024-06-21 21:34:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783341121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:21,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:21,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:21,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784861848] [2024-06-21 21:34:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:21,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:21,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:21,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:21,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 144 transitions, 1481 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:21,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:21,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:21,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:22,515 INFO L124 PetriNetUnfolderBase]: 1742/2734 cut-off events. [2024-06-21 21:34:22,516 INFO L125 PetriNetUnfolderBase]: For 45285/45285 co-relation queries the response was YES. [2024-06-21 21:34:22,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16358 conditions, 2734 events. 1742/2734 cut-off events. For 45285/45285 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14138 event pairs, 352 based on Foata normal form. 4/2736 useless extension candidates. Maximal degree in co-relation 16300. Up to 2528 conditions per place. [2024-06-21 21:34:22,539 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 147 selfloop transitions, 23 changer transitions 0/175 dead transitions. [2024-06-21 21:34:22,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 175 transitions, 1949 flow [2024-06-21 21:34:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:34:22,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:34:22,555 INFO L175 Difference]: Start difference. First operand has 122 places, 144 transitions, 1481 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:34:22,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 175 transitions, 1949 flow [2024-06-21 21:34:22,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 175 transitions, 1869 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:22,606 INFO L231 Difference]: Finished difference. Result has 124 places, 146 transitions, 1496 flow [2024-06-21 21:34:22,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1496, PETRI_PLACES=124, PETRI_TRANSITIONS=146} [2024-06-21 21:34:22,607 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-06-21 21:34:22,607 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 146 transitions, 1496 flow [2024-06-21 21:34:22,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:22,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:22,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:22,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 21:34:22,608 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:22,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1233736725, now seen corresponding path program 1 times [2024-06-21 21:34:22,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:22,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404520925] [2024-06-21 21:34:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:23,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:23,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404520925] [2024-06-21 21:34:23,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404520925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:23,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:23,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:23,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83834613] [2024-06-21 21:34:23,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:23,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:23,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:23,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:23,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:23,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 146 transitions, 1496 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:23,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:23,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:23,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:24,145 INFO L124 PetriNetUnfolderBase]: 1764/2762 cut-off events. [2024-06-21 21:34:24,145 INFO L125 PetriNetUnfolderBase]: For 49420/49420 co-relation queries the response was YES. [2024-06-21 21:34:24,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16796 conditions, 2762 events. 1764/2762 cut-off events. For 49420/49420 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14372 event pairs, 473 based on Foata normal form. 2/2758 useless extension candidates. Maximal degree in co-relation 16737. Up to 2465 conditions per place. [2024-06-21 21:34:24,166 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 126 selfloop transitions, 50 changer transitions 0/181 dead transitions. [2024-06-21 21:34:24,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 181 transitions, 2105 flow [2024-06-21 21:34:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:34:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:34:24,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-21 21:34:24,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-21 21:34:24,168 INFO L175 Difference]: Start difference. First operand has 124 places, 146 transitions, 1496 flow. Second operand 9 states and 173 transitions. [2024-06-21 21:34:24,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 181 transitions, 2105 flow [2024-06-21 21:34:24,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 181 transitions, 2028 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:24,227 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 1624 flow [2024-06-21 21:34:24,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1624, PETRI_PLACES=127, PETRI_TRANSITIONS=152} [2024-06-21 21:34:24,228 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-21 21:34:24,228 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 1624 flow [2024-06-21 21:34:24,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:24,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:24,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:24,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 21:34:24,229 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:24,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash 742830095, now seen corresponding path program 2 times [2024-06-21 21:34:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692879167] [2024-06-21 21:34:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:25,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:25,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692879167] [2024-06-21 21:34:25,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692879167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:25,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:25,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:25,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483702993] [2024-06-21 21:34:25,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:25,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:25,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:25,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:25,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 1624 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:25,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:25,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:25,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:25,884 INFO L124 PetriNetUnfolderBase]: 1770/2772 cut-off events. [2024-06-21 21:34:25,884 INFO L125 PetriNetUnfolderBase]: For 54001/54001 co-relation queries the response was YES. [2024-06-21 21:34:25,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17344 conditions, 2772 events. 1770/2772 cut-off events. For 54001/54001 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14440 event pairs, 452 based on Foata normal form. 4/2766 useless extension candidates. Maximal degree in co-relation 17284. Up to 2409 conditions per place. [2024-06-21 21:34:25,901 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 103 selfloop transitions, 65 changer transitions 0/173 dead transitions. [2024-06-21 21:34:25,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 173 transitions, 2074 flow [2024-06-21 21:34:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-21 21:34:25,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808362369337979 [2024-06-21 21:34:25,903 INFO L175 Difference]: Start difference. First operand has 127 places, 152 transitions, 1624 flow. Second operand 7 states and 138 transitions. [2024-06-21 21:34:25,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 173 transitions, 2074 flow [2024-06-21 21:34:25,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 173 transitions, 1908 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:25,963 INFO L231 Difference]: Finished difference. Result has 128 places, 155 transitions, 1673 flow [2024-06-21 21:34:25,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1673, PETRI_PLACES=128, PETRI_TRANSITIONS=155} [2024-06-21 21:34:25,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-21 21:34:25,963 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 155 transitions, 1673 flow [2024-06-21 21:34:25,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:25,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:25,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 21:34:25,964 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)] === [2024-06-21 21:34:25,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash -648479334, now seen corresponding path program 1 times [2024-06-21 21:34:25,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:25,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793798784] [2024-06-21 21:34:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:25,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:26,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:26,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793798784] [2024-06-21 21:34:26,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793798784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:26,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:26,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:26,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922441973] [2024-06-21 21:34:26,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:26,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:26,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:26,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:26,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 155 transitions, 1673 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:26,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:26,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:26,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:27,211 INFO L124 PetriNetUnfolderBase]: 1790/2809 cut-off events. [2024-06-21 21:34:27,212 INFO L125 PetriNetUnfolderBase]: For 59639/59639 co-relation queries the response was YES. [2024-06-21 21:34:27,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17981 conditions, 2809 events. 1790/2809 cut-off events. For 59639/59639 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14633 event pairs, 453 based on Foata normal form. 4/2811 useless extension candidates. Maximal degree in co-relation 17920. Up to 2573 conditions per place. [2024-06-21 21:34:27,235 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 141 selfloop transitions, 36 changer transitions 0/182 dead transitions. [2024-06-21 21:34:27,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 182 transitions, 2243 flow [2024-06-21 21:34:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-21 21:34:27,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-21 21:34:27,252 INFO L175 Difference]: Start difference. First operand has 128 places, 155 transitions, 1673 flow. Second operand 7 states and 136 transitions. [2024-06-21 21:34:27,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 182 transitions, 2243 flow [2024-06-21 21:34:27,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 182 transitions, 2080 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:27,366 INFO L231 Difference]: Finished difference. Result has 130 places, 161 transitions, 1678 flow [2024-06-21 21:34:27,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1678, PETRI_PLACES=130, PETRI_TRANSITIONS=161} [2024-06-21 21:34:27,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-21 21:34:27,368 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 161 transitions, 1678 flow [2024-06-21 21:34:27,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:27,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:27,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:27,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 21:34:27,372 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:27,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash -603839351, now seen corresponding path program 3 times [2024-06-21 21:34:27,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:27,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840334472] [2024-06-21 21:34:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:28,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840334472] [2024-06-21 21:34:28,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840334472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:28,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:28,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225871977] [2024-06-21 21:34:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:28,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:28,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:28,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:28,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 161 transitions, 1678 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:28,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:28,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:28,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:29,168 INFO L124 PetriNetUnfolderBase]: 1785/2793 cut-off events. [2024-06-21 21:34:29,168 INFO L125 PetriNetUnfolderBase]: For 62427/62427 co-relation queries the response was YES. [2024-06-21 21:34:29,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17881 conditions, 2793 events. 1785/2793 cut-off events. For 62427/62427 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14563 event pairs, 461 based on Foata normal form. 2/2789 useless extension candidates. Maximal degree in co-relation 17819. Up to 2456 conditions per place. [2024-06-21 21:34:29,190 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 133 selfloop transitions, 57 changer transitions 0/195 dead transitions. [2024-06-21 21:34:29,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 195 transitions, 2220 flow [2024-06-21 21:34:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:34:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:34:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-21 21:34:29,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-21 21:34:29,192 INFO L175 Difference]: Start difference. First operand has 130 places, 161 transitions, 1678 flow. Second operand 10 states and 189 transitions. [2024-06-21 21:34:29,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 195 transitions, 2220 flow [2024-06-21 21:34:29,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 195 transitions, 2167 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-21 21:34:29,261 INFO L231 Difference]: Finished difference. Result has 137 places, 164 transitions, 1818 flow [2024-06-21 21:34:29,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1818, PETRI_PLACES=137, PETRI_TRANSITIONS=164} [2024-06-21 21:34:29,262 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-06-21 21:34:29,262 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 164 transitions, 1818 flow [2024-06-21 21:34:29,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:29,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:29,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:29,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 21:34:29,262 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)] === [2024-06-21 21:34:29,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:29,263 INFO L85 PathProgramCache]: Analyzing trace with hash -452198052, now seen corresponding path program 2 times [2024-06-21 21:34:29,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:29,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700593071] [2024-06-21 21:34:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:29,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:29,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700593071] [2024-06-21 21:34:29,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700593071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:29,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:29,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:29,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438170034] [2024-06-21 21:34:29,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:29,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:29,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:29,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 164 transitions, 1818 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:29,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:29,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:29,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:30,395 INFO L124 PetriNetUnfolderBase]: 1773/2786 cut-off events. [2024-06-21 21:34:30,395 INFO L125 PetriNetUnfolderBase]: For 67051/67051 co-relation queries the response was YES. [2024-06-21 21:34:30,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18305 conditions, 2786 events. 1773/2786 cut-off events. For 67051/67051 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14511 event pairs, 441 based on Foata normal form. 4/2788 useless extension candidates. Maximal degree in co-relation 18241. Up to 2586 conditions per place. [2024-06-21 21:34:30,418 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 146 selfloop transitions, 31 changer transitions 0/182 dead transitions. [2024-06-21 21:34:30,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 182 transitions, 2246 flow [2024-06-21 21:34:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:34:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:34:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-21 21:34:30,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-21 21:34:30,437 INFO L175 Difference]: Start difference. First operand has 137 places, 164 transitions, 1818 flow. Second operand 6 states and 120 transitions. [2024-06-21 21:34:30,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 182 transitions, 2246 flow [2024-06-21 21:34:30,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 182 transitions, 2033 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-21 21:34:30,513 INFO L231 Difference]: Finished difference. Result has 134 places, 164 transitions, 1673 flow [2024-06-21 21:34:30,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1673, PETRI_PLACES=134, PETRI_TRANSITIONS=164} [2024-06-21 21:34:30,513 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2024-06-21 21:34:30,514 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 164 transitions, 1673 flow [2024-06-21 21:34:30,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:30,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:30,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:30,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 21:34:30,514 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:30,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:30,515 INFO L85 PathProgramCache]: Analyzing trace with hash -447454298, now seen corresponding path program 1 times [2024-06-21 21:34:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:30,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779243318] [2024-06-21 21:34:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:30,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:31,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779243318] [2024-06-21 21:34:31,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779243318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151873703] [2024-06-21 21:34:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:31,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:31,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:31,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 164 transitions, 1673 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:31,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:31,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:31,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:31,574 INFO L124 PetriNetUnfolderBase]: 1820/2842 cut-off events. [2024-06-21 21:34:31,575 INFO L125 PetriNetUnfolderBase]: For 70505/70505 co-relation queries the response was YES. [2024-06-21 21:34:31,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18559 conditions, 2842 events. 1820/2842 cut-off events. For 70505/70505 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14732 event pairs, 453 based on Foata normal form. 3/2839 useless extension candidates. Maximal degree in co-relation 18496. Up to 2500 conditions per place. [2024-06-21 21:34:31,600 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 149 selfloop transitions, 51 changer transitions 0/205 dead transitions. [2024-06-21 21:34:31,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 205 transitions, 2476 flow [2024-06-21 21:34:31,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 21:34:31,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-21 21:34:31,601 INFO L175 Difference]: Start difference. First operand has 134 places, 164 transitions, 1673 flow. Second operand 8 states and 150 transitions. [2024-06-21 21:34:31,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 205 transitions, 2476 flow [2024-06-21 21:34:31,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 205 transitions, 2372 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:31,684 INFO L231 Difference]: Finished difference. Result has 140 places, 183 transitions, 1951 flow [2024-06-21 21:34:31,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1951, PETRI_PLACES=140, PETRI_TRANSITIONS=183} [2024-06-21 21:34:31,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 98 predicate places. [2024-06-21 21:34:31,695 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 183 transitions, 1951 flow [2024-06-21 21:34:31,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:31,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:31,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:31,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 21:34:31,696 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:31,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:31,697 INFO L85 PathProgramCache]: Analyzing trace with hash -629114494, now seen corresponding path program 2 times [2024-06-21 21:34:31,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:31,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105293454] [2024-06-21 21:34:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105293454] [2024-06-21 21:34:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105293454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:32,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:32,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:32,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982693909] [2024-06-21 21:34:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:32,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:32,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:32,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:32,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:32,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:32,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 183 transitions, 1951 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:32,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:32,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:32,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:32,926 INFO L124 PetriNetUnfolderBase]: 1988/3113 cut-off events. [2024-06-21 21:34:32,927 INFO L125 PetriNetUnfolderBase]: For 84899/84899 co-relation queries the response was YES. [2024-06-21 21:34:32,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21290 conditions, 3113 events. 1988/3113 cut-off events. For 84899/84899 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16544 event pairs, 588 based on Foata normal form. 9/3120 useless extension candidates. Maximal degree in co-relation 21223. Up to 2827 conditions per place. [2024-06-21 21:34:32,952 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 184 selfloop transitions, 36 changer transitions 0/225 dead transitions. [2024-06-21 21:34:32,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 225 transitions, 2799 flow [2024-06-21 21:34:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:34:32,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:34:32,954 INFO L175 Difference]: Start difference. First operand has 140 places, 183 transitions, 1951 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:34:32,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 225 transitions, 2799 flow [2024-06-21 21:34:33,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 225 transitions, 2717 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-06-21 21:34:33,064 INFO L231 Difference]: Finished difference. Result has 148 places, 203 transitions, 2260 flow [2024-06-21 21:34:33,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2260, PETRI_PLACES=148, PETRI_TRANSITIONS=203} [2024-06-21 21:34:33,065 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-06-21 21:34:33,065 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 203 transitions, 2260 flow [2024-06-21 21:34:33,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:33,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:33,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:33,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 21:34:33,066 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:33,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash -12808568, now seen corresponding path program 3 times [2024-06-21 21:34:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:33,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189358038] [2024-06-21 21:34:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:33,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:33,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:33,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189358038] [2024-06-21 21:34:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189358038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:33,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:33,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:33,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132859180] [2024-06-21 21:34:33,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:33,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:33,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:33,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:33,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 203 transitions, 2260 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:33,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:33,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:33,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:34,226 INFO L124 PetriNetUnfolderBase]: 2143/3337 cut-off events. [2024-06-21 21:34:34,227 INFO L125 PetriNetUnfolderBase]: For 96960/96960 co-relation queries the response was YES. [2024-06-21 21:34:34,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23818 conditions, 3337 events. 2143/3337 cut-off events. For 96960/96960 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17927 event pairs, 499 based on Foata normal form. 9/3344 useless extension candidates. Maximal degree in co-relation 23747. Up to 2896 conditions per place. [2024-06-21 21:34:34,256 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 176 selfloop transitions, 69 changer transitions 0/250 dead transitions. [2024-06-21 21:34:34,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 250 transitions, 3190 flow [2024-06-21 21:34:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-21 21:34:34,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-21 21:34:34,258 INFO L175 Difference]: Start difference. First operand has 148 places, 203 transitions, 2260 flow. Second operand 7 states and 147 transitions. [2024-06-21 21:34:34,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 250 transitions, 3190 flow [2024-06-21 21:34:34,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 250 transitions, 3056 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-21 21:34:34,412 INFO L231 Difference]: Finished difference. Result has 153 places, 224 transitions, 2671 flow [2024-06-21 21:34:34,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2671, PETRI_PLACES=153, PETRI_TRANSITIONS=224} [2024-06-21 21:34:34,412 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-21 21:34:34,412 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 224 transitions, 2671 flow [2024-06-21 21:34:34,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:34,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:34,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:34,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 21:34:34,413 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)] === [2024-06-21 21:34:34,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash -10230568, now seen corresponding path program 1 times [2024-06-21 21:34:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:34,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714289392] [2024-06-21 21:34:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:34,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:35,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:35,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714289392] [2024-06-21 21:34:35,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714289392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:35,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:35,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:34:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372031358] [2024-06-21 21:34:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:35,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:34:35,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:35,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:34:35,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:34:35,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:35,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 224 transitions, 2671 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) [2024-06-21 21:34:35,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:35,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:35,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:35,964 INFO L124 PetriNetUnfolderBase]: 2138/3336 cut-off events. [2024-06-21 21:34:35,964 INFO L125 PetriNetUnfolderBase]: For 104488/104488 co-relation queries the response was YES. [2024-06-21 21:34:35,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25006 conditions, 3336 events. 2138/3336 cut-off events. For 104488/104488 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17908 event pairs, 652 based on Foata normal form. 2/3336 useless extension candidates. Maximal degree in co-relation 24932. Up to 3172 conditions per place. [2024-06-21 21:34:35,997 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 216 selfloop transitions, 13 changer transitions 0/234 dead transitions. [2024-06-21 21:34:35,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 234 transitions, 3183 flow [2024-06-21 21:34:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:34:35,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:34:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-21 21:34:35,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-21 21:34:35,998 INFO L175 Difference]: Start difference. First operand has 153 places, 224 transitions, 2671 flow. Second operand 5 states and 94 transitions. [2024-06-21 21:34:35,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 234 transitions, 3183 flow [2024-06-21 21:34:36,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 234 transitions, 3079 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-21 21:34:36,161 INFO L231 Difference]: Finished difference. Result has 156 places, 226 transitions, 2634 flow [2024-06-21 21:34:36,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2634, PETRI_PLACES=156, PETRI_TRANSITIONS=226} [2024-06-21 21:34:36,161 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-21 21:34:36,162 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 226 transitions, 2634 flow [2024-06-21 21:34:36,162 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) [2024-06-21 21:34:36,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:36,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:36,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 21:34:36,162 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:36,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:36,163 INFO L85 PathProgramCache]: Analyzing trace with hash -416223344, now seen corresponding path program 1 times [2024-06-21 21:34:36,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:36,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451785077] [2024-06-21 21:34:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:36,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:36,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:36,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451785077] [2024-06-21 21:34:36,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451785077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:36,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:36,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:36,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672372618] [2024-06-21 21:34:36,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:36,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:36,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:36,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:36,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:36,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 226 transitions, 2634 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:36,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:36,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:36,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:37,663 INFO L124 PetriNetUnfolderBase]: 2155/3358 cut-off events. [2024-06-21 21:34:37,663 INFO L125 PetriNetUnfolderBase]: For 108714/108714 co-relation queries the response was YES. [2024-06-21 21:34:37,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25218 conditions, 3358 events. 2155/3358 cut-off events. For 108714/108714 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18023 event pairs, 522 based on Foata normal form. 4/3356 useless extension candidates. Maximal degree in co-relation 25142. Up to 3039 conditions per place. [2024-06-21 21:34:37,691 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 204 selfloop transitions, 42 changer transitions 0/251 dead transitions. [2024-06-21 21:34:37,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 251 transitions, 3230 flow [2024-06-21 21:34:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:37,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:34:37,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:34:37,693 INFO L175 Difference]: Start difference. First operand has 156 places, 226 transitions, 2634 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:34:37,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 251 transitions, 3230 flow [2024-06-21 21:34:37,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 251 transitions, 3179 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-21 21:34:37,809 INFO L231 Difference]: Finished difference. Result has 161 places, 228 transitions, 2714 flow [2024-06-21 21:34:37,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2714, PETRI_PLACES=161, PETRI_TRANSITIONS=228} [2024-06-21 21:34:37,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2024-06-21 21:34:37,810 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 228 transitions, 2714 flow [2024-06-21 21:34:37,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:37,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:37,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:37,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 21:34:37,811 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:37,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1552744090, now seen corresponding path program 2 times [2024-06-21 21:34:37,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:37,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501593424] [2024-06-21 21:34:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:38,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:38,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501593424] [2024-06-21 21:34:38,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501593424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:38,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:38,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:38,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102018724] [2024-06-21 21:34:38,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:38,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:38,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:38,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:38,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 228 transitions, 2714 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:38,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:38,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:38,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:39,400 INFO L124 PetriNetUnfolderBase]: 2214/3443 cut-off events. [2024-06-21 21:34:39,401 INFO L125 PetriNetUnfolderBase]: For 119696/119696 co-relation queries the response was YES. [2024-06-21 21:34:39,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26367 conditions, 3443 events. 2214/3443 cut-off events. For 119696/119696 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18549 event pairs, 514 based on Foata normal form. 8/3441 useless extension candidates. Maximal degree in co-relation 26290. Up to 2879 conditions per place. [2024-06-21 21:34:39,432 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 193 selfloop transitions, 59 changer transitions 0/257 dead transitions. [2024-06-21 21:34:39,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 257 transitions, 3547 flow [2024-06-21 21:34:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-21 21:34:39,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-21 21:34:39,434 INFO L175 Difference]: Start difference. First operand has 161 places, 228 transitions, 2714 flow. Second operand 7 states and 137 transitions. [2024-06-21 21:34:39,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 257 transitions, 3547 flow [2024-06-21 21:34:39,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 257 transitions, 3436 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:39,572 INFO L231 Difference]: Finished difference. Result has 163 places, 235 transitions, 2922 flow [2024-06-21 21:34:39,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2922, PETRI_PLACES=163, PETRI_TRANSITIONS=235} [2024-06-21 21:34:39,572 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-21 21:34:39,573 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 235 transitions, 2922 flow [2024-06-21 21:34:39,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:39,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:39,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:39,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 21:34:39,573 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:39,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash -99374182, now seen corresponding path program 3 times [2024-06-21 21:34:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:39,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568289877] [2024-06-21 21:34:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:39,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:40,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:40,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568289877] [2024-06-21 21:34:40,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568289877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:40,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:40,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:40,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375140983] [2024-06-21 21:34:40,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:40,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:40,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:40,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:40,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:40,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:40,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 235 transitions, 2922 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:40,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:40,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:40,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:41,181 INFO L124 PetriNetUnfolderBase]: 2206/3431 cut-off events. [2024-06-21 21:34:41,181 INFO L125 PetriNetUnfolderBase]: For 124293/124293 co-relation queries the response was YES. [2024-06-21 21:34:41,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26726 conditions, 3431 events. 2206/3431 cut-off events. For 124293/124293 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18465 event pairs, 370 based on Foata normal form. 4/3425 useless extension candidates. Maximal degree in co-relation 26647. Up to 3167 conditions per place. [2024-06-21 21:34:41,209 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 232 selfloop transitions, 21 changer transitions 0/258 dead transitions. [2024-06-21 21:34:41,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 258 transitions, 3538 flow [2024-06-21 21:34:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-21 21:34:41,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564459930313589 [2024-06-21 21:34:41,210 INFO L175 Difference]: Start difference. First operand has 163 places, 235 transitions, 2922 flow. Second operand 7 states and 131 transitions. [2024-06-21 21:34:41,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 258 transitions, 3538 flow [2024-06-21 21:34:41,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 258 transitions, 3385 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-21 21:34:41,386 INFO L231 Difference]: Finished difference. Result has 166 places, 237 transitions, 2872 flow [2024-06-21 21:34:41,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2872, PETRI_PLACES=166, PETRI_TRANSITIONS=237} [2024-06-21 21:34:41,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-21 21:34:41,387 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 237 transitions, 2872 flow [2024-06-21 21:34:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:41,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:41,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:41,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 21:34:41,388 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:41,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1214916356, now seen corresponding path program 4 times [2024-06-21 21:34:41,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:41,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337818104] [2024-06-21 21:34:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:41,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:42,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:42,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:42,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337818104] [2024-06-21 21:34:42,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337818104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:42,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:42,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:34:42,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397244837] [2024-06-21 21:34:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:42,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:34:42,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:34:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:34:42,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:42,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 237 transitions, 2872 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:42,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:42,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:42,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:42,971 INFO L124 PetriNetUnfolderBase]: 2190/3407 cut-off events. [2024-06-21 21:34:42,972 INFO L125 PetriNetUnfolderBase]: For 126420/126420 co-relation queries the response was YES. [2024-06-21 21:34:42,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26253 conditions, 3407 events. 2190/3407 cut-off events. For 126420/126420 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18265 event pairs, 487 based on Foata normal form. 8/3405 useless extension candidates. Maximal degree in co-relation 26173. Up to 2993 conditions per place. [2024-06-21 21:34:43,006 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 192 selfloop transitions, 60 changer transitions 0/257 dead transitions. [2024-06-21 21:34:43,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 257 transitions, 3441 flow [2024-06-21 21:34:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-21 21:34:43,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-21 21:34:43,007 INFO L175 Difference]: Start difference. First operand has 166 places, 237 transitions, 2872 flow. Second operand 7 states and 136 transitions. [2024-06-21 21:34:43,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 257 transitions, 3441 flow [2024-06-21 21:34:43,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 257 transitions, 3312 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:43,215 INFO L231 Difference]: Finished difference. Result has 168 places, 238 transitions, 2887 flow [2024-06-21 21:34:43,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2887, PETRI_PLACES=168, PETRI_TRANSITIONS=238} [2024-06-21 21:34:43,216 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-21 21:34:43,216 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 238 transitions, 2887 flow [2024-06-21 21:34:43,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:43,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:43,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:43,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 21:34:43,217 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:43,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:43,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1214910404, now seen corresponding path program 1 times [2024-06-21 21:34:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716371281] [2024-06-21 21:34:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:44,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:44,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716371281] [2024-06-21 21:34:44,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716371281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:44,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:44,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:34:44,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991501538] [2024-06-21 21:34:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:44,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:34:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:34:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:34:44,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:44,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 238 transitions, 2887 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:44,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:44,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:44,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:45,039 INFO L124 PetriNetUnfolderBase]: 2281/3574 cut-off events. [2024-06-21 21:34:45,040 INFO L125 PetriNetUnfolderBase]: For 144020/144020 co-relation queries the response was YES. [2024-06-21 21:34:45,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27260 conditions, 3574 events. 2281/3574 cut-off events. For 144020/144020 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19513 event pairs, 456 based on Foata normal form. 32/3596 useless extension candidates. Maximal degree in co-relation 27179. Up to 2854 conditions per place. [2024-06-21 21:34:45,068 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 188 selfloop transitions, 73 changer transitions 0/266 dead transitions. [2024-06-21 21:34:45,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 266 transitions, 3585 flow [2024-06-21 21:34:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-21 21:34:45,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-21 21:34:45,070 INFO L175 Difference]: Start difference. First operand has 168 places, 238 transitions, 2887 flow. Second operand 8 states and 160 transitions. [2024-06-21 21:34:45,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 266 transitions, 3585 flow [2024-06-21 21:34:45,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 266 transitions, 3468 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 21:34:45,247 INFO L231 Difference]: Finished difference. Result has 171 places, 240 transitions, 3003 flow [2024-06-21 21:34:45,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3003, PETRI_PLACES=171, PETRI_TRANSITIONS=240} [2024-06-21 21:34:45,247 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-21 21:34:45,247 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 240 transitions, 3003 flow [2024-06-21 21:34:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:45,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:45,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:45,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 21:34:45,248 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:45,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash 239434460, now seen corresponding path program 2 times [2024-06-21 21:34:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972176178] [2024-06-21 21:34:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972176178] [2024-06-21 21:34:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972176178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:46,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:34:46,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049095300] [2024-06-21 21:34:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:46,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:34:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:34:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:34:46,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:46,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 240 transitions, 3003 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:46,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:46,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:46,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:47,234 INFO L124 PetriNetUnfolderBase]: 2490/3943 cut-off events. [2024-06-21 21:34:47,235 INFO L125 PetriNetUnfolderBase]: For 158082/158082 co-relation queries the response was YES. [2024-06-21 21:34:47,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30483 conditions, 3943 events. 2490/3943 cut-off events. For 158082/158082 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 22351 event pairs, 475 based on Foata normal form. 12/3949 useless extension candidates. Maximal degree in co-relation 30401. Up to 3092 conditions per place. [2024-06-21 21:34:47,272 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 203 selfloop transitions, 77 changer transitions 0/285 dead transitions. [2024-06-21 21:34:47,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 285 transitions, 4005 flow [2024-06-21 21:34:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:34:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:34:47,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-21 21:34:47,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48292682926829267 [2024-06-21 21:34:47,278 INFO L175 Difference]: Start difference. First operand has 171 places, 240 transitions, 3003 flow. Second operand 10 states and 198 transitions. [2024-06-21 21:34:47,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 285 transitions, 4005 flow [2024-06-21 21:34:47,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 285 transitions, 3846 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:47,529 INFO L231 Difference]: Finished difference. Result has 176 places, 244 transitions, 3163 flow [2024-06-21 21:34:47,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3163, PETRI_PLACES=176, PETRI_TRANSITIONS=244} [2024-06-21 21:34:47,530 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-21 21:34:47,530 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 244 transitions, 3163 flow [2024-06-21 21:34:47,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:47,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:47,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:47,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 21:34:47,531 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:47,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash 239167550, now seen corresponding path program 3 times [2024-06-21 21:34:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:47,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774875178] [2024-06-21 21:34:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:48,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:48,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774875178] [2024-06-21 21:34:48,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774875178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:48,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:48,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:34:48,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582613719] [2024-06-21 21:34:48,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:48,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:34:48,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:48,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:34:48,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:34:48,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:48,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 244 transitions, 3163 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:48,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:48,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:48,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:49,461 INFO L124 PetriNetUnfolderBase]: 2462/3889 cut-off events. [2024-06-21 21:34:49,462 INFO L125 PetriNetUnfolderBase]: For 158802/158802 co-relation queries the response was YES. [2024-06-21 21:34:49,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29886 conditions, 3889 events. 2462/3889 cut-off events. For 158802/158802 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 21869 event pairs, 566 based on Foata normal form. 16/3899 useless extension candidates. Maximal degree in co-relation 29802. Up to 3431 conditions per place. [2024-06-21 21:34:49,499 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 220 selfloop transitions, 53 changer transitions 0/278 dead transitions. [2024-06-21 21:34:49,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 278 transitions, 3847 flow [2024-06-21 21:34:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:34:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:34:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-21 21:34:49,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-21 21:34:49,501 INFO L175 Difference]: Start difference. First operand has 176 places, 244 transitions, 3163 flow. Second operand 10 states and 191 transitions. [2024-06-21 21:34:49,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 278 transitions, 3847 flow [2024-06-21 21:34:49,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 278 transitions, 3717 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:49,755 INFO L231 Difference]: Finished difference. Result has 180 places, 244 transitions, 3149 flow [2024-06-21 21:34:49,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3033, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3149, PETRI_PLACES=180, PETRI_TRANSITIONS=244} [2024-06-21 21:34:49,756 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-21 21:34:49,756 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 244 transitions, 3149 flow [2024-06-21 21:34:49,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:49,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:49,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:49,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 21:34:49,757 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:49,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash -515942090, now seen corresponding path program 1 times [2024-06-21 21:34:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:49,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238628640] [2024-06-21 21:34:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:49,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:50,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238628640] [2024-06-21 21:34:50,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238628640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:50,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:50,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061961369] [2024-06-21 21:34:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:50,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:50,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:50,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 244 transitions, 3149 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:50,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:50,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:50,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:51,080 INFO L124 PetriNetUnfolderBase]: 2530/3994 cut-off events. [2024-06-21 21:34:51,080 INFO L125 PetriNetUnfolderBase]: For 161048/161048 co-relation queries the response was YES. [2024-06-21 21:34:51,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31007 conditions, 3994 events. 2530/3994 cut-off events. For 161048/161048 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22530 event pairs, 555 based on Foata normal form. 2/3992 useless extension candidates. Maximal degree in co-relation 30921. Up to 3740 conditions per place. [2024-06-21 21:34:51,117 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 235 selfloop transitions, 44 changer transitions 0/284 dead transitions. [2024-06-21 21:34:51,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 284 transitions, 4253 flow [2024-06-21 21:34:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:34:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:34:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-21 21:34:51,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-21 21:34:51,119 INFO L175 Difference]: Start difference. First operand has 180 places, 244 transitions, 3149 flow. Second operand 8 states and 145 transitions. [2024-06-21 21:34:51,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 284 transitions, 4253 flow [2024-06-21 21:34:51,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 284 transitions, 4135 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 21:34:51,472 INFO L231 Difference]: Finished difference. Result has 182 places, 264 transitions, 3559 flow [2024-06-21 21:34:51,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3559, PETRI_PLACES=182, PETRI_TRANSITIONS=264} [2024-06-21 21:34:51,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2024-06-21 21:34:51,474 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 264 transitions, 3559 flow [2024-06-21 21:34:51,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:51,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:51,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 21:34:51,474 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)] === [2024-06-21 21:34:51,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:51,474 INFO L85 PathProgramCache]: Analyzing trace with hash -151240180, now seen corresponding path program 2 times [2024-06-21 21:34:51,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841969389] [2024-06-21 21:34:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:51,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:51,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:51,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841969389] [2024-06-21 21:34:51,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841969389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:51,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:51,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:34:51,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428430928] [2024-06-21 21:34:51,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:51,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:34:51,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:51,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:34:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:34:52,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:52,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 264 transitions, 3559 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:52,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:52,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:52,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:52,785 INFO L124 PetriNetUnfolderBase]: 2534/4013 cut-off events. [2024-06-21 21:34:52,786 INFO L125 PetriNetUnfolderBase]: For 167848/167848 co-relation queries the response was YES. [2024-06-21 21:34:52,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31242 conditions, 4013 events. 2534/4013 cut-off events. For 167848/167848 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 22739 event pairs, 557 based on Foata normal form. 4/4015 useless extension candidates. Maximal degree in co-relation 31153. Up to 3792 conditions per place. [2024-06-21 21:34:52,821 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 245 selfloop transitions, 32 changer transitions 0/282 dead transitions. [2024-06-21 21:34:52,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 282 transitions, 4230 flow [2024-06-21 21:34:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:34:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:34:52,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-21 21:34:52,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445993031358885 [2024-06-21 21:34:52,823 INFO L175 Difference]: Start difference. First operand has 182 places, 264 transitions, 3559 flow. Second operand 7 states and 128 transitions. [2024-06-21 21:34:52,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 282 transitions, 4230 flow [2024-06-21 21:34:53,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 282 transitions, 4158 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-21 21:34:53,084 INFO L231 Difference]: Finished difference. Result has 186 places, 267 transitions, 3630 flow [2024-06-21 21:34:53,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3630, PETRI_PLACES=186, PETRI_TRANSITIONS=267} [2024-06-21 21:34:53,085 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-21 21:34:53,085 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 267 transitions, 3630 flow [2024-06-21 21:34:53,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:53,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:53,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:53,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 21:34:53,086 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:53,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash -851786032, now seen corresponding path program 4 times [2024-06-21 21:34:53,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:53,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141302824] [2024-06-21 21:34:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:54,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141302824] [2024-06-21 21:34:54,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141302824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:54,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:54,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:34:54,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184071616] [2024-06-21 21:34:54,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:54,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:34:54,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:54,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:34:54,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:34:54,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:54,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 267 transitions, 3630 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:54,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:54,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:54,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:55,283 INFO L124 PetriNetUnfolderBase]: 2661/4233 cut-off events. [2024-06-21 21:34:55,283 INFO L125 PetriNetUnfolderBase]: For 192589/192589 co-relation queries the response was YES. [2024-06-21 21:34:55,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33564 conditions, 4233 events. 2661/4233 cut-off events. For 192589/192589 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24444 event pairs, 589 based on Foata normal form. 12/4238 useless extension candidates. Maximal degree in co-relation 33473. Up to 3438 conditions per place. [2024-06-21 21:34:55,332 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 238 selfloop transitions, 65 changer transitions 0/308 dead transitions. [2024-06-21 21:34:55,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 308 transitions, 4620 flow [2024-06-21 21:34:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:34:55,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:34:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-21 21:34:55,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48048780487804876 [2024-06-21 21:34:55,334 INFO L175 Difference]: Start difference. First operand has 186 places, 267 transitions, 3630 flow. Second operand 10 states and 197 transitions. [2024-06-21 21:34:55,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 308 transitions, 4620 flow [2024-06-21 21:34:55,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 308 transitions, 4505 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-21 21:34:55,700 INFO L231 Difference]: Finished difference. Result has 193 places, 269 transitions, 3729 flow [2024-06-21 21:34:55,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3729, PETRI_PLACES=193, PETRI_TRANSITIONS=269} [2024-06-21 21:34:55,701 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 151 predicate places. [2024-06-21 21:34:55,701 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 269 transitions, 3729 flow [2024-06-21 21:34:55,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:55,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:55,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:55,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 21:34:55,702 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:55,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1539149250, now seen corresponding path program 5 times [2024-06-21 21:34:55,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:55,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14688486] [2024-06-21 21:34:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:55,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:56,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:56,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14688486] [2024-06-21 21:34:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14688486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:56,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:56,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:34:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560822638] [2024-06-21 21:34:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:56,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:34:56,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:34:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:34:56,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:56,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 269 transitions, 3729 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:56,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:56,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:56,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:57,771 INFO L124 PetriNetUnfolderBase]: 2633/4189 cut-off events. [2024-06-21 21:34:57,771 INFO L125 PetriNetUnfolderBase]: For 195321/195321 co-relation queries the response was YES. [2024-06-21 21:34:57,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33081 conditions, 4189 events. 2633/4189 cut-off events. For 195321/195321 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24174 event pairs, 581 based on Foata normal form. 16/4199 useless extension candidates. Maximal degree in co-relation 32989. Up to 3624 conditions per place. [2024-06-21 21:34:57,813 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 236 selfloop transitions, 66 changer transitions 0/307 dead transitions. [2024-06-21 21:34:57,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 307 transitions, 4483 flow [2024-06-21 21:34:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:34:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:34:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-21 21:34:57,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656319290465632 [2024-06-21 21:34:57,815 INFO L175 Difference]: Start difference. First operand has 193 places, 269 transitions, 3729 flow. Second operand 11 states and 210 transitions. [2024-06-21 21:34:57,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 307 transitions, 4483 flow [2024-06-21 21:34:58,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 307 transitions, 4373 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 21:34:58,145 INFO L231 Difference]: Finished difference. Result has 198 places, 269 transitions, 3762 flow [2024-06-21 21:34:58,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3762, PETRI_PLACES=198, PETRI_TRANSITIONS=269} [2024-06-21 21:34:58,147 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-06-21 21:34:58,147 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 269 transitions, 3762 flow [2024-06-21 21:34:58,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:58,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:34:58,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:34:58,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 21:34:58,150 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:34:58,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:34:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash -538086802, now seen corresponding path program 6 times [2024-06-21 21:34:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:34:58,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353216653] [2024-06-21 21:34:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:34:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:34:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:34:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:34:59,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:34:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353216653] [2024-06-21 21:34:59,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353216653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:34:59,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:34:59,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:34:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711664799] [2024-06-21 21:34:59,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:34:59,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:34:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:34:59,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:34:59,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:34:59,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:34:59,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 269 transitions, 3762 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:34:59,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:34:59,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:34:59,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:34:59,890 INFO L124 PetriNetUnfolderBase]: 2649/4221 cut-off events. [2024-06-21 21:34:59,891 INFO L125 PetriNetUnfolderBase]: For 197600/197600 co-relation queries the response was YES. [2024-06-21 21:34:59,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33299 conditions, 4221 events. 2649/4221 cut-off events. For 197600/197600 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24459 event pairs, 459 based on Foata normal form. 12/4227 useless extension candidates. Maximal degree in co-relation 33205. Up to 2812 conditions per place. [2024-06-21 21:34:59,934 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 231 selfloop transitions, 72 changer transitions 0/308 dead transitions. [2024-06-21 21:34:59,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 308 transitions, 4728 flow [2024-06-21 21:34:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:34:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:34:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-21 21:34:59,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-21 21:34:59,948 INFO L175 Difference]: Start difference. First operand has 198 places, 269 transitions, 3762 flow. Second operand 9 states and 178 transitions. [2024-06-21 21:34:59,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 308 transitions, 4728 flow [2024-06-21 21:35:00,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 308 transitions, 4587 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 21:35:00,253 INFO L231 Difference]: Finished difference. Result has 197 places, 270 transitions, 3813 flow [2024-06-21 21:35:00,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3813, PETRI_PLACES=197, PETRI_TRANSITIONS=270} [2024-06-21 21:35:00,254 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-21 21:35:00,254 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 270 transitions, 3813 flow [2024-06-21 21:35:00,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:00,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:00,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:00,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 21:35:00,255 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)] === [2024-06-21 21:35:00,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1474225940, now seen corresponding path program 3 times [2024-06-21 21:35:00,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:00,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157036069] [2024-06-21 21:35:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:00,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:00,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:00,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157036069] [2024-06-21 21:35:00,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157036069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:00,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:00,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:35:00,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488042848] [2024-06-21 21:35:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:00,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:35:00,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:00,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:35:00,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:35:00,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:00,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 270 transitions, 3813 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:00,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:00,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:00,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:01,644 INFO L124 PetriNetUnfolderBase]: 2669/4260 cut-off events. [2024-06-21 21:35:01,644 INFO L125 PetriNetUnfolderBase]: For 202178/202178 co-relation queries the response was YES. [2024-06-21 21:35:01,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33852 conditions, 4260 events. 2669/4260 cut-off events. For 202178/202178 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24748 event pairs, 596 based on Foata normal form. 4/4258 useless extension candidates. Maximal degree in co-relation 33757. Up to 3693 conditions per place. [2024-06-21 21:35:01,688 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 213 selfloop transitions, 81 changer transitions 0/299 dead transitions. [2024-06-21 21:35:01,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 299 transitions, 4804 flow [2024-06-21 21:35:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:35:01,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:35:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-21 21:35:01,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808362369337979 [2024-06-21 21:35:01,689 INFO L175 Difference]: Start difference. First operand has 197 places, 270 transitions, 3813 flow. Second operand 7 states and 138 transitions. [2024-06-21 21:35:01,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 299 transitions, 4804 flow [2024-06-21 21:35:02,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 299 transitions, 4621 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 21:35:02,032 INFO L231 Difference]: Finished difference. Result has 197 places, 279 transitions, 4010 flow [2024-06-21 21:35:02,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4010, PETRI_PLACES=197, PETRI_TRANSITIONS=279} [2024-06-21 21:35:02,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-21 21:35:02,033 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 279 transitions, 4010 flow [2024-06-21 21:35:02,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:02,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:02,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:02,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 21:35:02,034 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:02,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1292087724, now seen corresponding path program 4 times [2024-06-21 21:35:02,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:02,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369238812] [2024-06-21 21:35:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:02,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:02,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:02,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369238812] [2024-06-21 21:35:02,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369238812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:02,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:02,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:35:02,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227817775] [2024-06-21 21:35:02,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:02,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:35:02,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:02,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:35:02,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:35:02,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:02,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 279 transitions, 4010 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:02,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:02,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:02,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:03,432 INFO L124 PetriNetUnfolderBase]: 2621/4193 cut-off events. [2024-06-21 21:35:03,433 INFO L125 PetriNetUnfolderBase]: For 196721/196721 co-relation queries the response was YES. [2024-06-21 21:35:03,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32897 conditions, 4193 events. 2621/4193 cut-off events. For 196721/196721 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24372 event pairs, 572 based on Foata normal form. 12/4203 useless extension candidates. Maximal degree in co-relation 32801. Up to 3881 conditions per place. [2024-06-21 21:35:03,472 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 253 selfloop transitions, 41 changer transitions 0/299 dead transitions. [2024-06-21 21:35:03,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 299 transitions, 4702 flow [2024-06-21 21:35:03,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-21 21:35:03,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603658536585366 [2024-06-21 21:35:03,475 INFO L175 Difference]: Start difference. First operand has 197 places, 279 transitions, 4010 flow. Second operand 8 states and 151 transitions. [2024-06-21 21:35:03,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 299 transitions, 4702 flow [2024-06-21 21:35:03,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 299 transitions, 4487 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-21 21:35:03,816 INFO L231 Difference]: Finished difference. Result has 202 places, 279 transitions, 3892 flow [2024-06-21 21:35:03,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3796, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3892, PETRI_PLACES=202, PETRI_TRANSITIONS=279} [2024-06-21 21:35:03,817 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-21 21:35:03,817 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 279 transitions, 3892 flow [2024-06-21 21:35:03,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:03,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:03,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:03,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 21:35:03,818 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)] === [2024-06-21 21:35:03,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:03,818 INFO L85 PathProgramCache]: Analyzing trace with hash -325026514, now seen corresponding path program 5 times [2024-06-21 21:35:03,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:03,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954455996] [2024-06-21 21:35:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:03,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:04,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:04,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954455996] [2024-06-21 21:35:04,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954455996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:04,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:04,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:35:04,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702458781] [2024-06-21 21:35:04,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:04,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:35:04,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:35:04,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:35:04,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:04,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 279 transitions, 3892 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:04,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:04,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:04,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:05,153 INFO L124 PetriNetUnfolderBase]: 2635/4228 cut-off events. [2024-06-21 21:35:05,153 INFO L125 PetriNetUnfolderBase]: For 195871/195871 co-relation queries the response was YES. [2024-06-21 21:35:05,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32736 conditions, 4228 events. 2635/4228 cut-off events. For 195871/195871 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24706 event pairs, 572 based on Foata normal form. 6/4232 useless extension candidates. Maximal degree in co-relation 32639. Up to 3923 conditions per place. [2024-06-21 21:35:05,189 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 249 selfloop transitions, 46 changer transitions 0/300 dead transitions. [2024-06-21 21:35:05,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 300 transitions, 4610 flow [2024-06-21 21:35:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:35:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:35:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-21 21:35:05,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-06-21 21:35:05,190 INFO L175 Difference]: Start difference. First operand has 202 places, 279 transitions, 3892 flow. Second operand 6 states and 122 transitions. [2024-06-21 21:35:05,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 300 transitions, 4610 flow [2024-06-21 21:35:05,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 300 transitions, 4502 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 21:35:05,545 INFO L231 Difference]: Finished difference. Result has 201 places, 282 transitions, 3970 flow [2024-06-21 21:35:05,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3970, PETRI_PLACES=201, PETRI_TRANSITIONS=282} [2024-06-21 21:35:05,546 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-21 21:35:05,546 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 282 transitions, 3970 flow [2024-06-21 21:35:05,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:05,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:05,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 21:35:05,547 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)] === [2024-06-21 21:35:05,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash -324789364, now seen corresponding path program 6 times [2024-06-21 21:35:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:05,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268229552] [2024-06-21 21:35:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:06,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:06,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268229552] [2024-06-21 21:35:06,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268229552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:06,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:06,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:35:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732541472] [2024-06-21 21:35:06,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:06,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:35:06,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:06,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:35:06,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:35:06,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:06,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 282 transitions, 3970 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:06,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:06,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:06,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:07,011 INFO L124 PetriNetUnfolderBase]: 2587/4157 cut-off events. [2024-06-21 21:35:07,011 INFO L125 PetriNetUnfolderBase]: For 198499/198499 co-relation queries the response was YES. [2024-06-21 21:35:07,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31954 conditions, 4157 events. 2587/4157 cut-off events. For 198499/198499 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24277 event pairs, 572 based on Foata normal form. 12/4167 useless extension candidates. Maximal degree in co-relation 31856. Up to 3821 conditions per place. [2024-06-21 21:35:07,056 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 250 selfloop transitions, 42 changer transitions 0/297 dead transitions. [2024-06-21 21:35:07,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 297 transitions, 4627 flow [2024-06-21 21:35:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:07,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-21 21:35:07,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-21 21:35:07,057 INFO L175 Difference]: Start difference. First operand has 201 places, 282 transitions, 3970 flow. Second operand 9 states and 155 transitions. [2024-06-21 21:35:07,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 297 transitions, 4627 flow [2024-06-21 21:35:07,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 297 transitions, 4469 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-21 21:35:07,425 INFO L231 Difference]: Finished difference. Result has 207 places, 283 transitions, 3941 flow [2024-06-21 21:35:07,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3941, PETRI_PLACES=207, PETRI_TRANSITIONS=283} [2024-06-21 21:35:07,426 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-21 21:35:07,426 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 283 transitions, 3941 flow [2024-06-21 21:35:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:07,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:07,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:07,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 21:35:07,427 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)] === [2024-06-21 21:35:07,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1266424436, now seen corresponding path program 7 times [2024-06-21 21:35:07,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:07,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389730204] [2024-06-21 21:35:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:07,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389730204] [2024-06-21 21:35:07,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389730204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:07,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297914363] [2024-06-21 21:35:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:07,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:08,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:08,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 283 transitions, 3941 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) [2024-06-21 21:35:08,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:08,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:08,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:08,891 INFO L124 PetriNetUnfolderBase]: 2606/4187 cut-off events. [2024-06-21 21:35:08,891 INFO L125 PetriNetUnfolderBase]: For 192531/192531 co-relation queries the response was YES. [2024-06-21 21:35:08,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32066 conditions, 4187 events. 2606/4187 cut-off events. For 192531/192531 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24485 event pairs, 566 based on Foata normal form. 2/4187 useless extension candidates. Maximal degree in co-relation 31966. Up to 3891 conditions per place. [2024-06-21 21:35:08,934 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 261 selfloop transitions, 51 changer transitions 0/317 dead transitions. [2024-06-21 21:35:08,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 317 transitions, 4778 flow [2024-06-21 21:35:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:35:08,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:35:08,936 INFO L175 Difference]: Start difference. First operand has 207 places, 283 transitions, 3941 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:35:08,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 317 transitions, 4778 flow [2024-06-21 21:35:09,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 317 transitions, 4604 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-21 21:35:09,266 INFO L231 Difference]: Finished difference. Result has 209 places, 293 transitions, 4032 flow [2024-06-21 21:35:09,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4032, PETRI_PLACES=209, PETRI_TRANSITIONS=293} [2024-06-21 21:35:09,267 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-21 21:35:09,267 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 293 transitions, 4032 flow [2024-06-21 21:35:09,267 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) [2024-06-21 21:35:09,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:09,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:09,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 21:35:09,267 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)] === [2024-06-21 21:35:09,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1968479242, now seen corresponding path program 1 times [2024-06-21 21:35:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:09,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771387267] [2024-06-21 21:35:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:09,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:09,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771387267] [2024-06-21 21:35:09,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771387267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:09,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:09,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:09,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197976481] [2024-06-21 21:35:09,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:09,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:09,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:09,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:09,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:10,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:10,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 293 transitions, 4032 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:10,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:10,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:10,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:10,758 INFO L124 PetriNetUnfolderBase]: 2637/4225 cut-off events. [2024-06-21 21:35:10,759 INFO L125 PetriNetUnfolderBase]: For 201969/201969 co-relation queries the response was YES. [2024-06-21 21:35:10,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32426 conditions, 4225 events. 2637/4225 cut-off events. For 201969/201969 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24632 event pairs, 569 based on Foata normal form. 3/4221 useless extension candidates. Maximal degree in co-relation 32327. Up to 3589 conditions per place. [2024-06-21 21:35:10,806 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 204 selfloop transitions, 120 changer transitions 0/329 dead transitions. [2024-06-21 21:35:10,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 329 transitions, 5224 flow [2024-06-21 21:35:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-21 21:35:10,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-21 21:35:10,808 INFO L175 Difference]: Start difference. First operand has 209 places, 293 transitions, 4032 flow. Second operand 9 states and 175 transitions. [2024-06-21 21:35:10,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 329 transitions, 5224 flow [2024-06-21 21:35:11,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 329 transitions, 5130 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-21 21:35:11,220 INFO L231 Difference]: Finished difference. Result has 216 places, 303 transitions, 4386 flow [2024-06-21 21:35:11,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4386, PETRI_PLACES=216, PETRI_TRANSITIONS=303} [2024-06-21 21:35:11,220 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 174 predicate places. [2024-06-21 21:35:11,220 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 303 transitions, 4386 flow [2024-06-21 21:35:11,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:11,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:11,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:11,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 21:35:11,221 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)] === [2024-06-21 21:35:11,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:11,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1968569607, now seen corresponding path program 1 times [2024-06-21 21:35:11,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:11,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447446623] [2024-06-21 21:35:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:11,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:11,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447446623] [2024-06-21 21:35:11,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447446623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:11,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:11,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:11,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018105187] [2024-06-21 21:35:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:11,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:11,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:11,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:11,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:11,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:11,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 303 transitions, 4386 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:11,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:11,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:11,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:12,711 INFO L124 PetriNetUnfolderBase]: 2755/4382 cut-off events. [2024-06-21 21:35:12,712 INFO L125 PetriNetUnfolderBase]: For 232919/232919 co-relation queries the response was YES. [2024-06-21 21:35:12,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35634 conditions, 4382 events. 2755/4382 cut-off events. For 232919/232919 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 25498 event pairs, 550 based on Foata normal form. 6/4382 useless extension candidates. Maximal degree in co-relation 35533. Up to 3448 conditions per place. [2024-06-21 21:35:12,758 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 211 selfloop transitions, 128 changer transitions 0/344 dead transitions. [2024-06-21 21:35:12,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 344 transitions, 5678 flow [2024-06-21 21:35:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-21 21:35:12,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-21 21:35:12,760 INFO L175 Difference]: Start difference. First operand has 216 places, 303 transitions, 4386 flow. Second operand 8 states and 160 transitions. [2024-06-21 21:35:12,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 344 transitions, 5678 flow [2024-06-21 21:35:13,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 344 transitions, 5439 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-21 21:35:13,210 INFO L231 Difference]: Finished difference. Result has 221 places, 319 transitions, 4829 flow [2024-06-21 21:35:13,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4829, PETRI_PLACES=221, PETRI_TRANSITIONS=319} [2024-06-21 21:35:13,210 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-21 21:35:13,211 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 319 transitions, 4829 flow [2024-06-21 21:35:13,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:13,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:13,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:13,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 21:35:13,211 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)] === [2024-06-21 21:35:13,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:13,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1972288677, now seen corresponding path program 2 times [2024-06-21 21:35:13,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:13,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281640022] [2024-06-21 21:35:13,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:13,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:13,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:13,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281640022] [2024-06-21 21:35:13,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281640022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:13,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:13,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:13,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260229300] [2024-06-21 21:35:13,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:13,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:13,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:13,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:13,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 319 transitions, 4829 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) [2024-06-21 21:35:13,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:13,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:13,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:14,866 INFO L124 PetriNetUnfolderBase]: 2881/4576 cut-off events. [2024-06-21 21:35:14,866 INFO L125 PetriNetUnfolderBase]: For 265233/265233 co-relation queries the response was YES. [2024-06-21 21:35:14,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39520 conditions, 4576 events. 2881/4576 cut-off events. For 265233/265233 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26809 event pairs, 571 based on Foata normal form. 6/4580 useless extension candidates. Maximal degree in co-relation 39415. Up to 4136 conditions per place. [2024-06-21 21:35:14,915 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 297 selfloop transitions, 52 changer transitions 0/354 dead transitions. [2024-06-21 21:35:14,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 354 transitions, 6118 flow [2024-06-21 21:35:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:14,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:14,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-21 21:35:14,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-21 21:35:14,917 INFO L175 Difference]: Start difference. First operand has 221 places, 319 transitions, 4829 flow. Second operand 9 states and 170 transitions. [2024-06-21 21:35:14,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 354 transitions, 6118 flow [2024-06-21 21:35:15,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 354 transitions, 5975 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-21 21:35:15,448 INFO L231 Difference]: Finished difference. Result has 229 places, 330 transitions, 5090 flow [2024-06-21 21:35:15,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4704, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5090, PETRI_PLACES=229, PETRI_TRANSITIONS=330} [2024-06-21 21:35:15,448 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-21 21:35:15,449 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 330 transitions, 5090 flow [2024-06-21 21:35:15,449 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) [2024-06-21 21:35:15,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:15,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:15,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 21:35:15,449 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)] === [2024-06-21 21:35:15,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash -982460924, now seen corresponding path program 2 times [2024-06-21 21:35:15,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:15,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785135122] [2024-06-21 21:35:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:15,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:16,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:16,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785135122] [2024-06-21 21:35:16,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785135122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:16,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:16,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:16,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967682625] [2024-06-21 21:35:16,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:16,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:16,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:16,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:16,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:16,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 330 transitions, 5090 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:16,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:16,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:16,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:17,309 INFO L124 PetriNetUnfolderBase]: 2911/4622 cut-off events. [2024-06-21 21:35:17,309 INFO L125 PetriNetUnfolderBase]: For 267772/267772 co-relation queries the response was YES. [2024-06-21 21:35:17,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39309 conditions, 4622 events. 2911/4622 cut-off events. For 267772/267772 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 27141 event pairs, 594 based on Foata normal form. 6/4626 useless extension candidates. Maximal degree in co-relation 39200. Up to 4294 conditions per place. [2024-06-21 21:35:17,357 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 315 selfloop transitions, 53 changer transitions 0/373 dead transitions. [2024-06-21 21:35:17,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 373 transitions, 6362 flow [2024-06-21 21:35:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-21 21:35:17,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-21 21:35:17,358 INFO L175 Difference]: Start difference. First operand has 229 places, 330 transitions, 5090 flow. Second operand 9 states and 168 transitions. [2024-06-21 21:35:17,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 373 transitions, 6362 flow [2024-06-21 21:35:17,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 373 transitions, 6235 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-21 21:35:17,921 INFO L231 Difference]: Finished difference. Result has 237 places, 353 transitions, 5519 flow [2024-06-21 21:35:17,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4963, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5519, PETRI_PLACES=237, PETRI_TRANSITIONS=353} [2024-06-21 21:35:17,923 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-21 21:35:17,923 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 353 transitions, 5519 flow [2024-06-21 21:35:17,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:17,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:17,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:17,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 21:35:17,923 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)] === [2024-06-21 21:35:17,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash -324780281, now seen corresponding path program 3 times [2024-06-21 21:35:17,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:17,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588500451] [2024-06-21 21:35:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:17,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:18,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:18,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588500451] [2024-06-21 21:35:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588500451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:18,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:18,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:18,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249570971] [2024-06-21 21:35:18,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:18,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:18,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:18,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:18,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 353 transitions, 5519 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) [2024-06-21 21:35:18,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:18,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:18,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:19,713 INFO L124 PetriNetUnfolderBase]: 3037/4805 cut-off events. [2024-06-21 21:35:19,714 INFO L125 PetriNetUnfolderBase]: For 295456/295456 co-relation queries the response was YES. [2024-06-21 21:35:19,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42358 conditions, 4805 events. 3037/4805 cut-off events. For 295456/295456 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 28314 event pairs, 601 based on Foata normal form. 6/4809 useless extension candidates. Maximal degree in co-relation 42244. Up to 4127 conditions per place. [2024-06-21 21:35:19,769 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 293 selfloop transitions, 97 changer transitions 0/395 dead transitions. [2024-06-21 21:35:19,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 395 transitions, 6936 flow [2024-06-21 21:35:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-21 21:35:19,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030487804878049 [2024-06-21 21:35:19,770 INFO L175 Difference]: Start difference. First operand has 237 places, 353 transitions, 5519 flow. Second operand 8 states and 165 transitions. [2024-06-21 21:35:19,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 395 transitions, 6936 flow [2024-06-21 21:35:20,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 395 transitions, 6789 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-21 21:35:20,301 INFO L231 Difference]: Finished difference. Result has 244 places, 366 transitions, 5956 flow [2024-06-21 21:35:20,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5372, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5956, PETRI_PLACES=244, PETRI_TRANSITIONS=366} [2024-06-21 21:35:20,302 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-21 21:35:20,302 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 366 transitions, 5956 flow [2024-06-21 21:35:20,302 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) [2024-06-21 21:35:20,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:20,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:20,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 21:35:20,302 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)] === [2024-06-21 21:35:20,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash -317155924, now seen corresponding path program 1 times [2024-06-21 21:35:20,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:20,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503196912] [2024-06-21 21:35:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:20,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:20,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503196912] [2024-06-21 21:35:20,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503196912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:20,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:20,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:20,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834730786] [2024-06-21 21:35:20,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:20,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:21,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:21,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 366 transitions, 5956 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:21,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:21,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:21,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:22,052 INFO L124 PetriNetUnfolderBase]: 3034/4794 cut-off events. [2024-06-21 21:35:22,052 INFO L125 PetriNetUnfolderBase]: For 300096/300096 co-relation queries the response was YES. [2024-06-21 21:35:22,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42960 conditions, 4794 events. 3034/4794 cut-off events. For 300096/300096 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 28248 event pairs, 619 based on Foata normal form. 1/4793 useless extension candidates. Maximal degree in co-relation 42842. Up to 4531 conditions per place. [2024-06-21 21:35:22,114 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 342 selfloop transitions, 30 changer transitions 0/377 dead transitions. [2024-06-21 21:35:22,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 377 transitions, 6738 flow [2024-06-21 21:35:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:35:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:35:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-21 21:35:22,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-21 21:35:22,116 INFO L175 Difference]: Start difference. First operand has 244 places, 366 transitions, 5956 flow. Second operand 5 states and 100 transitions. [2024-06-21 21:35:22,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 377 transitions, 6738 flow [2024-06-21 21:35:22,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 377 transitions, 6593 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-21 21:35:22,783 INFO L231 Difference]: Finished difference. Result has 247 places, 366 transitions, 5895 flow [2024-06-21 21:35:22,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5895, PETRI_PLACES=247, PETRI_TRANSITIONS=366} [2024-06-21 21:35:22,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-21 21:35:22,785 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 366 transitions, 5895 flow [2024-06-21 21:35:22,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:22,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:22,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:22,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 21:35:22,790 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)] === [2024-06-21 21:35:22,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash -324774701, now seen corresponding path program 4 times [2024-06-21 21:35:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811162908] [2024-06-21 21:35:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:23,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:23,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811162908] [2024-06-21 21:35:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811162908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:23,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:23,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:23,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634296540] [2024-06-21 21:35:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:23,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:23,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:23,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:23,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:23,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:23,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 366 transitions, 5895 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) [2024-06-21 21:35:23,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:23,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:23,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:24,691 INFO L124 PetriNetUnfolderBase]: 3120/4928 cut-off events. [2024-06-21 21:35:24,691 INFO L125 PetriNetUnfolderBase]: For 323408/323408 co-relation queries the response was YES. [2024-06-21 21:35:24,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44450 conditions, 4928 events. 3120/4928 cut-off events. For 323408/323408 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 29165 event pairs, 626 based on Foata normal form. 6/4932 useless extension candidates. Maximal degree in co-relation 44330. Up to 4513 conditions per place. [2024-06-21 21:35:24,746 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 342 selfloop transitions, 48 changer transitions 0/395 dead transitions. [2024-06-21 21:35:24,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 395 transitions, 7073 flow [2024-06-21 21:35:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-21 21:35:24,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-21 21:35:24,748 INFO L175 Difference]: Start difference. First operand has 247 places, 366 transitions, 5895 flow. Second operand 8 states and 149 transitions. [2024-06-21 21:35:24,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 395 transitions, 7073 flow [2024-06-21 21:35:25,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 395 transitions, 7013 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 21:35:25,397 INFO L231 Difference]: Finished difference. Result has 252 places, 373 transitions, 6141 flow [2024-06-21 21:35:25,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6141, PETRI_PLACES=252, PETRI_TRANSITIONS=373} [2024-06-21 21:35:25,397 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-21 21:35:25,397 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 373 transitions, 6141 flow [2024-06-21 21:35:25,398 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) [2024-06-21 21:35:25,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:25,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:25,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 21:35:25,398 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:25,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:25,398 INFO L85 PathProgramCache]: Analyzing trace with hash -397064252, now seen corresponding path program 3 times [2024-06-21 21:35:25,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:25,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125504448] [2024-06-21 21:35:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:25,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:26,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125504448] [2024-06-21 21:35:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125504448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:26,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:26,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607116679] [2024-06-21 21:35:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:26,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:26,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:26,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:26,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 373 transitions, 6141 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:26,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:26,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:26,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:27,327 INFO L124 PetriNetUnfolderBase]: 3170/5010 cut-off events. [2024-06-21 21:35:27,327 INFO L125 PetriNetUnfolderBase]: For 337694/337694 co-relation queries the response was YES. [2024-06-21 21:35:27,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45709 conditions, 5010 events. 3170/5010 cut-off events. For 337694/337694 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 29757 event pairs, 641 based on Foata normal form. 6/5014 useless extension candidates. Maximal degree in co-relation 45587. Up to 4506 conditions per place. [2024-06-21 21:35:27,383 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 341 selfloop transitions, 88 changer transitions 0/434 dead transitions. [2024-06-21 21:35:27,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 434 transitions, 7847 flow [2024-06-21 21:35:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-21 21:35:27,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152439024390244 [2024-06-21 21:35:27,384 INFO L175 Difference]: Start difference. First operand has 252 places, 373 transitions, 6141 flow. Second operand 8 states and 169 transitions. [2024-06-21 21:35:27,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 434 transitions, 7847 flow [2024-06-21 21:35:28,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 434 transitions, 7647 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-21 21:35:28,051 INFO L231 Difference]: Finished difference. Result has 259 places, 405 transitions, 6821 flow [2024-06-21 21:35:28,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5949, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6821, PETRI_PLACES=259, PETRI_TRANSITIONS=405} [2024-06-21 21:35:28,051 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-21 21:35:28,052 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 405 transitions, 6821 flow [2024-06-21 21:35:28,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:28,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:28,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:28,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 21:35:28,052 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:28,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:28,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1905992524, now seen corresponding path program 1 times [2024-06-21 21:35:28,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:28,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760582669] [2024-06-21 21:35:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:29,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:29,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760582669] [2024-06-21 21:35:29,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760582669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:29,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:29,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:29,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109887349] [2024-06-21 21:35:29,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:29,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:29,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:29,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:29,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:29,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:29,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 405 transitions, 6821 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:29,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:29,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:29,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:30,500 INFO L124 PetriNetUnfolderBase]: 3150/4990 cut-off events. [2024-06-21 21:35:30,501 INFO L125 PetriNetUnfolderBase]: For 344244/344244 co-relation queries the response was YES. [2024-06-21 21:35:30,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45900 conditions, 4990 events. 3150/4990 cut-off events. For 344244/344244 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 29781 event pairs, 609 based on Foata normal form. 12/4996 useless extension candidates. Maximal degree in co-relation 45775. Up to 4359 conditions per place. [2024-06-21 21:35:30,560 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 382 selfloop transitions, 51 changer transitions 0/438 dead transitions. [2024-06-21 21:35:30,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 438 transitions, 7806 flow [2024-06-21 21:35:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-21 21:35:30,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-21 21:35:30,561 INFO L175 Difference]: Start difference. First operand has 259 places, 405 transitions, 6821 flow. Second operand 9 states and 169 transitions. [2024-06-21 21:35:30,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 438 transitions, 7806 flow [2024-06-21 21:35:31,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 438 transitions, 7675 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-06-21 21:35:31,269 INFO L231 Difference]: Finished difference. Result has 268 places, 407 transitions, 6834 flow [2024-06-21 21:35:31,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6690, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6834, PETRI_PLACES=268, PETRI_TRANSITIONS=407} [2024-06-21 21:35:31,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-21 21:35:31,269 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 407 transitions, 6834 flow [2024-06-21 21:35:31,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:31,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:31,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:31,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 21:35:31,270 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:31,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1393964522, now seen corresponding path program 2 times [2024-06-21 21:35:31,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290275479] [2024-06-21 21:35:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:32,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:32,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290275479] [2024-06-21 21:35:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290275479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:32,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:32,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192918152] [2024-06-21 21:35:32,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:32,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:32,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:32,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:32,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 407 transitions, 6834 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:32,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:32,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:32,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:33,609 INFO L124 PetriNetUnfolderBase]: 3191/5056 cut-off events. [2024-06-21 21:35:33,609 INFO L125 PetriNetUnfolderBase]: For 356784/356784 co-relation queries the response was YES. [2024-06-21 21:35:33,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46639 conditions, 5056 events. 3191/5056 cut-off events. For 356784/356784 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 30247 event pairs, 597 based on Foata normal form. 12/5058 useless extension candidates. Maximal degree in co-relation 46510. Up to 4227 conditions per place. [2024-06-21 21:35:33,682 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 362 selfloop transitions, 68 changer transitions 0/435 dead transitions. [2024-06-21 21:35:33,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 435 transitions, 7830 flow [2024-06-21 21:35:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:33,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-21 21:35:33,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-21 21:35:33,684 INFO L175 Difference]: Start difference. First operand has 268 places, 407 transitions, 6834 flow. Second operand 8 states and 153 transitions. [2024-06-21 21:35:33,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 435 transitions, 7830 flow [2024-06-21 21:35:34,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 435 transitions, 7673 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 21:35:34,391 INFO L231 Difference]: Finished difference. Result has 269 places, 408 transitions, 6865 flow [2024-06-21 21:35:34,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6865, PETRI_PLACES=269, PETRI_TRANSITIONS=408} [2024-06-21 21:35:34,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-21 21:35:34,391 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 408 transitions, 6865 flow [2024-06-21 21:35:34,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:34,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:34,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:34,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 21:35:34,392 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:34,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash 784248876, now seen corresponding path program 3 times [2024-06-21 21:35:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:34,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398806965] [2024-06-21 21:35:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:35,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:35,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398806965] [2024-06-21 21:35:35,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398806965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:35,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:35,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:35,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671108891] [2024-06-21 21:35:35,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:35,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:35,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:35,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:35,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:35,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:35,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 408 transitions, 6865 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:35,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:35,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:35,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:36,568 INFO L124 PetriNetUnfolderBase]: 3171/5024 cut-off events. [2024-06-21 21:35:36,568 INFO L125 PetriNetUnfolderBase]: For 355692/355692 co-relation queries the response was YES. [2024-06-21 21:35:36,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45927 conditions, 5024 events. 3171/5024 cut-off events. For 355692/355692 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 29987 event pairs, 602 based on Foata normal form. 12/5026 useless extension candidates. Maximal degree in co-relation 45799. Up to 4571 conditions per place. [2024-06-21 21:35:36,624 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 407 selfloop transitions, 23 changer transitions 0/435 dead transitions. [2024-06-21 21:35:36,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 435 transitions, 7755 flow [2024-06-21 21:35:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-21 21:35:36,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-21 21:35:36,626 INFO L175 Difference]: Start difference. First operand has 269 places, 408 transitions, 6865 flow. Second operand 8 states and 148 transitions. [2024-06-21 21:35:36,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 435 transitions, 7755 flow [2024-06-21 21:35:37,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 435 transitions, 7523 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-21 21:35:37,283 INFO L231 Difference]: Finished difference. Result has 267 places, 407 transitions, 6617 flow [2024-06-21 21:35:37,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6567, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6617, PETRI_PLACES=267, PETRI_TRANSITIONS=407} [2024-06-21 21:35:37,284 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-21 21:35:37,284 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 407 transitions, 6617 flow [2024-06-21 21:35:37,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:37,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:37,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:37,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 21:35:37,285 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:37,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1185917457, now seen corresponding path program 1 times [2024-06-21 21:35:37,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:37,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451520570] [2024-06-21 21:35:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:37,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:37,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451520570] [2024-06-21 21:35:37,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451520570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:37,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:37,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023414312] [2024-06-21 21:35:37,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:37,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:37,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:38,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:38,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 407 transitions, 6617 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:38,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:38,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:38,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:39,116 INFO L124 PetriNetUnfolderBase]: 3181/5046 cut-off events. [2024-06-21 21:35:39,116 INFO L125 PetriNetUnfolderBase]: For 311924/311924 co-relation queries the response was YES. [2024-06-21 21:35:39,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44725 conditions, 5046 events. 3181/5046 cut-off events. For 311924/311924 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 30219 event pairs, 638 based on Foata normal form. 2/5046 useless extension candidates. Maximal degree in co-relation 44599. Up to 4640 conditions per place. [2024-06-21 21:35:39,180 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 359 selfloop transitions, 68 changer transitions 0/432 dead transitions. [2024-06-21 21:35:39,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 432 transitions, 7674 flow [2024-06-21 21:35:39,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-21 21:35:39,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-21 21:35:39,182 INFO L175 Difference]: Start difference. First operand has 267 places, 407 transitions, 6617 flow. Second operand 8 states and 147 transitions. [2024-06-21 21:35:39,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 432 transitions, 7674 flow [2024-06-21 21:35:39,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 432 transitions, 7504 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 21:35:39,956 INFO L231 Difference]: Finished difference. Result has 267 places, 410 transitions, 6655 flow [2024-06-21 21:35:39,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6447, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6655, PETRI_PLACES=267, PETRI_TRANSITIONS=410} [2024-06-21 21:35:39,956 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-21 21:35:39,956 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 410 transitions, 6655 flow [2024-06-21 21:35:39,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:39,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:39,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:39,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 21:35:39,957 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:39,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 764900635, now seen corresponding path program 1 times [2024-06-21 21:35:39,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:39,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249381876] [2024-06-21 21:35:39,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:39,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249381876] [2024-06-21 21:35:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249381876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:40,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:40,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251351378] [2024-06-21 21:35:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:40,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:40,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:40,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:40,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 410 transitions, 6655 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:40,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:40,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:40,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:41,688 INFO L124 PetriNetUnfolderBase]: 3265/5164 cut-off events. [2024-06-21 21:35:41,688 INFO L125 PetriNetUnfolderBase]: For 337613/337613 co-relation queries the response was YES. [2024-06-21 21:35:41,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46147 conditions, 5164 events. 3265/5164 cut-off events. For 337613/337613 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 30951 event pairs, 649 based on Foata normal form. 4/5166 useless extension candidates. Maximal degree in co-relation 46022. Up to 4658 conditions per place. [2024-06-21 21:35:41,757 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 358 selfloop transitions, 81 changer transitions 0/444 dead transitions. [2024-06-21 21:35:41,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 444 transitions, 8040 flow [2024-06-21 21:35:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:41,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-21 21:35:41,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-21 21:35:41,758 INFO L175 Difference]: Start difference. First operand has 267 places, 410 transitions, 6655 flow. Second operand 8 states and 153 transitions. [2024-06-21 21:35:41,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 444 transitions, 8040 flow [2024-06-21 21:35:42,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 444 transitions, 7878 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 21:35:42,555 INFO L231 Difference]: Finished difference. Result has 270 places, 419 transitions, 6958 flow [2024-06-21 21:35:42,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6493, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6958, PETRI_PLACES=270, PETRI_TRANSITIONS=419} [2024-06-21 21:35:42,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-21 21:35:42,555 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 419 transitions, 6958 flow [2024-06-21 21:35:42,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:42,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:42,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:42,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 21:35:42,556 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:42,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash -220749733, now seen corresponding path program 2 times [2024-06-21 21:35:42,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:42,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246928441] [2024-06-21 21:35:42,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:42,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:43,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246928441] [2024-06-21 21:35:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246928441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:43,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:43,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:43,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555126624] [2024-06-21 21:35:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:43,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:43,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:43,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:43,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 419 transitions, 6958 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) [2024-06-21 21:35:43,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:43,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:43,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:44,360 INFO L124 PetriNetUnfolderBase]: 3285/5192 cut-off events. [2024-06-21 21:35:44,361 INFO L125 PetriNetUnfolderBase]: For 349877/349877 co-relation queries the response was YES. [2024-06-21 21:35:44,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46950 conditions, 5192 events. 3285/5192 cut-off events. For 349877/349877 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 31124 event pairs, 662 based on Foata normal form. 4/5194 useless extension candidates. Maximal degree in co-relation 46823. Up to 4864 conditions per place. [2024-06-21 21:35:44,426 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 392 selfloop transitions, 42 changer transitions 0/439 dead transitions. [2024-06-21 21:35:44,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 439 transitions, 7988 flow [2024-06-21 21:35:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-21 21:35:44,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-21 21:35:44,427 INFO L175 Difference]: Start difference. First operand has 270 places, 419 transitions, 6958 flow. Second operand 8 states and 144 transitions. [2024-06-21 21:35:44,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 439 transitions, 7988 flow [2024-06-21 21:35:45,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 439 transitions, 7835 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-21 21:35:45,235 INFO L231 Difference]: Finished difference. Result has 274 places, 422 transitions, 6989 flow [2024-06-21 21:35:45,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6989, PETRI_PLACES=274, PETRI_TRANSITIONS=422} [2024-06-21 21:35:45,236 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-21 21:35:45,236 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 422 transitions, 6989 flow [2024-06-21 21:35:45,236 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) [2024-06-21 21:35:45,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:45,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:45,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 21:35:45,237 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:35:45,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:45,237 INFO L85 PathProgramCache]: Analyzing trace with hash -589370567, now seen corresponding path program 3 times [2024-06-21 21:35:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:45,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100434222] [2024-06-21 21:35:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100434222] [2024-06-21 21:35:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100434222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:45,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916879402] [2024-06-21 21:35:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:45,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:45,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:45,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 422 transitions, 6989 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:45,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:45,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:45,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:47,091 INFO L124 PetriNetUnfolderBase]: 3273/5178 cut-off events. [2024-06-21 21:35:47,092 INFO L125 PetriNetUnfolderBase]: For 353199/353199 co-relation queries the response was YES. [2024-06-21 21:35:47,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46614 conditions, 5178 events. 3273/5178 cut-off events. For 353199/353199 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 31061 event pairs, 652 based on Foata normal form. 4/5180 useless extension candidates. Maximal degree in co-relation 46486. Up to 4806 conditions per place. [2024-06-21 21:35:47,150 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 385 selfloop transitions, 51 changer transitions 0/441 dead transitions. [2024-06-21 21:35:47,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 441 transitions, 7967 flow [2024-06-21 21:35:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:47,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-21 21:35:47,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-21 21:35:47,152 INFO L175 Difference]: Start difference. First operand has 274 places, 422 transitions, 6989 flow. Second operand 8 states and 148 transitions. [2024-06-21 21:35:47,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 441 transitions, 7967 flow [2024-06-21 21:35:47,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 441 transitions, 7793 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-21 21:35:47,816 INFO L231 Difference]: Finished difference. Result has 276 places, 422 transitions, 6925 flow [2024-06-21 21:35:47,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6815, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6925, PETRI_PLACES=276, PETRI_TRANSITIONS=422} [2024-06-21 21:35:47,816 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-21 21:35:47,816 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 422 transitions, 6925 flow [2024-06-21 21:35:47,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:47,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:47,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:47,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 21:35:47,817 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)] === [2024-06-21 21:35:47,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash -220987069, now seen corresponding path program 2 times [2024-06-21 21:35:47,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:47,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829154847] [2024-06-21 21:35:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:47,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:48,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:48,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829154847] [2024-06-21 21:35:48,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829154847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:48,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:48,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:48,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791773094] [2024-06-21 21:35:48,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:48,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:48,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:48,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:48,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:48,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 422 transitions, 6925 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) [2024-06-21 21:35:48,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:48,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:48,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:49,670 INFO L124 PetriNetUnfolderBase]: 3283/5196 cut-off events. [2024-06-21 21:35:49,670 INFO L125 PetriNetUnfolderBase]: For 358060/358060 co-relation queries the response was YES. [2024-06-21 21:35:49,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46806 conditions, 5196 events. 3283/5196 cut-off events. For 358060/358060 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 31121 event pairs, 650 based on Foata normal form. 2/5196 useless extension candidates. Maximal degree in co-relation 46678. Up to 4858 conditions per place. [2024-06-21 21:35:49,747 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 396 selfloop transitions, 41 changer transitions 0/442 dead transitions. [2024-06-21 21:35:49,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 442 transitions, 7953 flow [2024-06-21 21:35:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-21 21:35:49,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-21 21:35:49,764 INFO L175 Difference]: Start difference. First operand has 276 places, 422 transitions, 6925 flow. Second operand 8 states and 142 transitions. [2024-06-21 21:35:49,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 442 transitions, 7953 flow [2024-06-21 21:35:50,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 442 transitions, 7801 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 21:35:50,557 INFO L231 Difference]: Finished difference. Result has 278 places, 425 transitions, 6933 flow [2024-06-21 21:35:50,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6773, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6933, PETRI_PLACES=278, PETRI_TRANSITIONS=425} [2024-06-21 21:35:50,558 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-21 21:35:50,558 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 425 transitions, 6933 flow [2024-06-21 21:35:50,558 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) [2024-06-21 21:35:50,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:50,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:50,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 21:35:50,559 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)] === [2024-06-21 21:35:50,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash -220740805, now seen corresponding path program 1 times [2024-06-21 21:35:50,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:50,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542858780] [2024-06-21 21:35:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:50,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:51,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:51,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542858780] [2024-06-21 21:35:51,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542858780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:51,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:51,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:35:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654393187] [2024-06-21 21:35:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:51,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:35:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:51,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:35:51,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:35:51,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:51,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 425 transitions, 6933 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:51,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:51,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:51,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:52,782 INFO L124 PetriNetUnfolderBase]: 3327/5263 cut-off events. [2024-06-21 21:35:52,783 INFO L125 PetriNetUnfolderBase]: For 383686/383686 co-relation queries the response was YES. [2024-06-21 21:35:52,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47261 conditions, 5263 events. 3327/5263 cut-off events. For 383686/383686 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31620 event pairs, 658 based on Foata normal form. 12/5273 useless extension candidates. Maximal degree in co-relation 47132. Up to 4807 conditions per place. [2024-06-21 21:35:52,855 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 395 selfloop transitions, 51 changer transitions 0/451 dead transitions. [2024-06-21 21:35:52,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 451 transitions, 8025 flow [2024-06-21 21:35:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:35:52,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:35:52,857 INFO L175 Difference]: Start difference. First operand has 278 places, 425 transitions, 6933 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:35:52,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 451 transitions, 8025 flow [2024-06-21 21:35:53,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 451 transitions, 7918 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-21 21:35:53,735 INFO L231 Difference]: Finished difference. Result has 281 places, 426 transitions, 6949 flow [2024-06-21 21:35:53,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6826, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6949, PETRI_PLACES=281, PETRI_TRANSITIONS=426} [2024-06-21 21:35:53,736 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-06-21 21:35:53,736 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 426 transitions, 6949 flow [2024-06-21 21:35:53,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:53,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:53,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:53,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 21:35:53,737 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)] === [2024-06-21 21:35:53,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash -506817275, now seen corresponding path program 3 times [2024-06-21 21:35:53,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:53,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995797324] [2024-06-21 21:35:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:53,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:54,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:54,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995797324] [2024-06-21 21:35:54,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995797324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:54,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:54,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:54,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461145082] [2024-06-21 21:35:54,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:54,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:54,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:54,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:54,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:54,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 426 transitions, 6949 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:54,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:54,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:54,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:55,620 INFO L124 PetriNetUnfolderBase]: 3321/5257 cut-off events. [2024-06-21 21:35:55,620 INFO L125 PetriNetUnfolderBase]: For 376857/376857 co-relation queries the response was YES. [2024-06-21 21:35:55,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47337 conditions, 5257 events. 3321/5257 cut-off events. For 376857/376857 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 31605 event pairs, 668 based on Foata normal form. 2/5253 useless extension candidates. Maximal degree in co-relation 47206. Up to 4617 conditions per place. [2024-06-21 21:35:55,694 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 325 selfloop transitions, 121 changer transitions 0/451 dead transitions. [2024-06-21 21:35:55,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 451 transitions, 8159 flow [2024-06-21 21:35:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:35:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:35:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-21 21:35:55,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603658536585366 [2024-06-21 21:35:55,695 INFO L175 Difference]: Start difference. First operand has 281 places, 426 transitions, 6949 flow. Second operand 8 states and 151 transitions. [2024-06-21 21:35:55,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 451 transitions, 8159 flow [2024-06-21 21:35:56,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 451 transitions, 8036 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 21:35:56,597 INFO L231 Difference]: Finished difference. Result has 283 places, 426 transitions, 7074 flow [2024-06-21 21:35:56,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6826, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7074, PETRI_PLACES=283, PETRI_TRANSITIONS=426} [2024-06-21 21:35:56,597 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-21 21:35:56,597 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 426 transitions, 7074 flow [2024-06-21 21:35:56,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:56,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:56,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:56,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 21:35:56,598 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)] === [2024-06-21 21:35:56,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash 627341635, now seen corresponding path program 4 times [2024-06-21 21:35:56,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:56,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386530084] [2024-06-21 21:35:56,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:56,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:35:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:35:57,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:35:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386530084] [2024-06-21 21:35:57,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386530084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:35:57,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:35:57,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:35:57,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360630154] [2024-06-21 21:35:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:35:57,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:35:57,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:35:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:35:57,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:35:57,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:35:57,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 426 transitions, 7074 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:57,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:35:57,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:35:57,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:35:58,595 INFO L124 PetriNetUnfolderBase]: 3315/5255 cut-off events. [2024-06-21 21:35:58,596 INFO L125 PetriNetUnfolderBase]: For 384948/384948 co-relation queries the response was YES. [2024-06-21 21:35:58,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47515 conditions, 5255 events. 3315/5255 cut-off events. For 384948/384948 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 31614 event pairs, 670 based on Foata normal form. 2/5251 useless extension candidates. Maximal degree in co-relation 47383. Up to 4612 conditions per place. [2024-06-21 21:35:58,661 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 338 selfloop transitions, 108 changer transitions 0/451 dead transitions. [2024-06-21 21:35:58,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 451 transitions, 8187 flow [2024-06-21 21:35:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:35:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:35:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-21 21:35:58,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-21 21:35:58,663 INFO L175 Difference]: Start difference. First operand has 283 places, 426 transitions, 7074 flow. Second operand 9 states and 162 transitions. [2024-06-21 21:35:58,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 451 transitions, 8187 flow [2024-06-21 21:35:59,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 451 transitions, 7917 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 21:35:59,471 INFO L231 Difference]: Finished difference. Result has 286 places, 426 transitions, 7026 flow [2024-06-21 21:35:59,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6804, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7026, PETRI_PLACES=286, PETRI_TRANSITIONS=426} [2024-06-21 21:35:59,472 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-06-21 21:35:59,472 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 426 transitions, 7026 flow [2024-06-21 21:35:59,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:35:59,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:35:59,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:35:59,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 21:35:59,473 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)] === [2024-06-21 21:35:59,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:35:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash 627341821, now seen corresponding path program 4 times [2024-06-21 21:35:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:35:59,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995563917] [2024-06-21 21:35:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:35:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:35:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:00,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:00,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995563917] [2024-06-21 21:36:00,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995563917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:00,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:00,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:36:00,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614156581] [2024-06-21 21:36:00,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:00,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:36:00,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:00,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:36:00,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:36:00,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:00,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 426 transitions, 7026 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:00,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:00,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:00,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:01,261 INFO L124 PetriNetUnfolderBase]: 3323/5277 cut-off events. [2024-06-21 21:36:01,262 INFO L125 PetriNetUnfolderBase]: For 402329/402329 co-relation queries the response was YES. [2024-06-21 21:36:01,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47534 conditions, 5277 events. 3323/5277 cut-off events. For 402329/402329 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31870 event pairs, 602 based on Foata normal form. 8/5279 useless extension candidates. Maximal degree in co-relation 47401. Up to 3906 conditions per place. [2024-06-21 21:36:01,333 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 276 selfloop transitions, 176 changer transitions 0/457 dead transitions. [2024-06-21 21:36:01,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 457 transitions, 8482 flow [2024-06-21 21:36:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:36:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:36:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-21 21:36:01,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2024-06-21 21:36:01,335 INFO L175 Difference]: Start difference. First operand has 286 places, 426 transitions, 7026 flow. Second operand 8 states and 159 transitions. [2024-06-21 21:36:01,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 457 transitions, 8482 flow [2024-06-21 21:36:02,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 457 transitions, 8232 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 21:36:02,298 INFO L231 Difference]: Finished difference. Result has 287 places, 429 transitions, 7216 flow [2024-06-21 21:36:02,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6776, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7216, PETRI_PLACES=287, PETRI_TRANSITIONS=429} [2024-06-21 21:36:02,298 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-21 21:36:02,299 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 429 transitions, 7216 flow [2024-06-21 21:36:02,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:02,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:02,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:02,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 21:36:02,299 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:02,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1011126781, now seen corresponding path program 5 times [2024-06-21 21:36:02,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:02,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449147711] [2024-06-21 21:36:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:02,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449147711] [2024-06-21 21:36:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449147711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:02,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:02,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:36:02,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724690919] [2024-06-21 21:36:02,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:02,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:36:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:36:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:36:03,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:03,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 429 transitions, 7216 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:03,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:03,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:03,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:04,266 INFO L124 PetriNetUnfolderBase]: 3331/5269 cut-off events. [2024-06-21 21:36:04,267 INFO L125 PetriNetUnfolderBase]: For 408376/408376 co-relation queries the response was YES. [2024-06-21 21:36:04,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48039 conditions, 5269 events. 3331/5269 cut-off events. For 408376/408376 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 31668 event pairs, 614 based on Foata normal form. 8/5275 useless extension candidates. Maximal degree in co-relation 47905. Up to 4777 conditions per place. [2024-06-21 21:36:04,339 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 386 selfloop transitions, 65 changer transitions 0/456 dead transitions. [2024-06-21 21:36:04,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 456 transitions, 8584 flow [2024-06-21 21:36:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:36:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:36:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-21 21:36:04,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-21 21:36:04,341 INFO L175 Difference]: Start difference. First operand has 287 places, 429 transitions, 7216 flow. Second operand 10 states and 180 transitions. [2024-06-21 21:36:04,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 456 transitions, 8584 flow [2024-06-21 21:36:05,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 456 transitions, 7965 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-21 21:36:05,291 INFO L231 Difference]: Finished difference. Result has 289 places, 432 transitions, 6803 flow [2024-06-21 21:36:05,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6603, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6803, PETRI_PLACES=289, PETRI_TRANSITIONS=432} [2024-06-21 21:36:05,291 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-21 21:36:05,292 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 432 transitions, 6803 flow [2024-06-21 21:36:05,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:05,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:05,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:05,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 21:36:05,292 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:05,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:05,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1956369293, now seen corresponding path program 6 times [2024-06-21 21:36:05,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:05,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043924456] [2024-06-21 21:36:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:05,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:05,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:05,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043924456] [2024-06-21 21:36:05,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043924456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:05,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:05,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:36:05,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144242871] [2024-06-21 21:36:05,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:05,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:36:05,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:05,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:36:05,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:36:06,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:06,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 432 transitions, 6803 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:06,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:06,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:06,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:07,259 INFO L124 PetriNetUnfolderBase]: 3339/5306 cut-off events. [2024-06-21 21:36:07,259 INFO L125 PetriNetUnfolderBase]: For 402262/402262 co-relation queries the response was YES. [2024-06-21 21:36:07,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46832 conditions, 5306 events. 3339/5306 cut-off events. For 402262/402262 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 32076 event pairs, 630 based on Foata normal form. 8/5312 useless extension candidates. Maximal degree in co-relation 46699. Up to 4469 conditions per place. [2024-06-21 21:36:07,328 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 351 selfloop transitions, 111 changer transitions 0/467 dead transitions. [2024-06-21 21:36:07,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 467 transitions, 8278 flow [2024-06-21 21:36:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:36:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:36:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-21 21:36:07,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 21:36:07,330 INFO L175 Difference]: Start difference. First operand has 289 places, 432 transitions, 6803 flow. Second operand 8 states and 164 transitions. [2024-06-21 21:36:07,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 467 transitions, 8278 flow [2024-06-21 21:36:08,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 467 transitions, 8082 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-21 21:36:08,254 INFO L231 Difference]: Finished difference. Result has 288 places, 435 transitions, 6917 flow [2024-06-21 21:36:08,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6607, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6917, PETRI_PLACES=288, PETRI_TRANSITIONS=435} [2024-06-21 21:36:08,255 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-21 21:36:08,255 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 435 transitions, 6917 flow [2024-06-21 21:36:08,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:08,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:08,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:08,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 21:36:08,255 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:08,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1485879321, now seen corresponding path program 7 times [2024-06-21 21:36:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325354746] [2024-06-21 21:36:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:08,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:08,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325354746] [2024-06-21 21:36:08,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325354746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:08,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:08,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:36:08,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098315027] [2024-06-21 21:36:08,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:08,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:36:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:08,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:36:08,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:36:08,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:08,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 435 transitions, 6917 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) [2024-06-21 21:36:08,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:08,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:08,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:10,133 INFO L124 PetriNetUnfolderBase]: 3359/5334 cut-off events. [2024-06-21 21:36:10,133 INFO L125 PetriNetUnfolderBase]: For 407781/407781 co-relation queries the response was YES. [2024-06-21 21:36:10,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47322 conditions, 5334 events. 3359/5334 cut-off events. For 407781/407781 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 32254 event pairs, 664 based on Foata normal form. 4/5336 useless extension candidates. Maximal degree in co-relation 47189. Up to 4994 conditions per place. [2024-06-21 21:36:10,195 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 418 selfloop transitions, 31 changer transitions 0/454 dead transitions. [2024-06-21 21:36:10,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 454 transitions, 7961 flow [2024-06-21 21:36:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:36:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:36:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-21 21:36:10,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529616724738676 [2024-06-21 21:36:10,197 INFO L175 Difference]: Start difference. First operand has 288 places, 435 transitions, 6917 flow. Second operand 7 states and 130 transitions. [2024-06-21 21:36:10,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 454 transitions, 7961 flow [2024-06-21 21:36:11,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 454 transitions, 7765 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-21 21:36:11,285 INFO L231 Difference]: Finished difference. Result has 291 places, 438 transitions, 6869 flow [2024-06-21 21:36:11,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6723, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6869, PETRI_PLACES=291, PETRI_TRANSITIONS=438} [2024-06-21 21:36:11,285 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-21 21:36:11,285 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 438 transitions, 6869 flow [2024-06-21 21:36:11,286 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) [2024-06-21 21:36:11,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:11,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:11,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 21:36:11,286 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)] === [2024-06-21 21:36:11,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1478521161, now seen corresponding path program 8 times [2024-06-21 21:36:11,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:11,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264894499] [2024-06-21 21:36:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:11,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:11,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264894499] [2024-06-21 21:36:11,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264894499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:11,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:11,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:36:11,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202477854] [2024-06-21 21:36:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:11,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:36:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:11,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:36:11,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:36:12,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:12,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 438 transitions, 6869 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) [2024-06-21 21:36:12,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:12,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:12,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:13,193 INFO L124 PetriNetUnfolderBase]: 3327/5273 cut-off events. [2024-06-21 21:36:13,193 INFO L125 PetriNetUnfolderBase]: For 410590/410590 co-relation queries the response was YES. [2024-06-21 21:36:13,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45993 conditions, 5273 events. 3327/5273 cut-off events. For 410590/410590 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 31789 event pairs, 624 based on Foata normal form. 8/5279 useless extension candidates. Maximal degree in co-relation 45859. Up to 4842 conditions per place. [2024-06-21 21:36:13,266 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 406 selfloop transitions, 48 changer transitions 0/459 dead transitions. [2024-06-21 21:36:13,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 459 transitions, 7911 flow [2024-06-21 21:36:13,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:36:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:36:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-21 21:36:13,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-21 21:36:13,268 INFO L175 Difference]: Start difference. First operand has 291 places, 438 transitions, 6869 flow. Second operand 8 states and 147 transitions. [2024-06-21 21:36:13,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 459 transitions, 7911 flow [2024-06-21 21:36:14,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 459 transitions, 7748 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-21 21:36:14,490 INFO L231 Difference]: Finished difference. Result has 294 places, 438 transitions, 6819 flow [2024-06-21 21:36:14,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6706, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6819, PETRI_PLACES=294, PETRI_TRANSITIONS=438} [2024-06-21 21:36:14,491 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-21 21:36:14,491 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 438 transitions, 6819 flow [2024-06-21 21:36:14,491 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) [2024-06-21 21:36:14,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:14,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:14,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 21:36:14,492 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)] === [2024-06-21 21:36:14,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:14,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1685187621, now seen corresponding path program 9 times [2024-06-21 21:36:14,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:14,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743976387] [2024-06-21 21:36:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:14,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:15,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743976387] [2024-06-21 21:36:15,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743976387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:15,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:15,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:36:15,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527774042] [2024-06-21 21:36:15,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:15,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:36:15,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:15,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:36:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:36:15,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:15,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 438 transitions, 6819 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) [2024-06-21 21:36:15,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:15,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:15,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:16,268 INFO L124 PetriNetUnfolderBase]: 3315/5274 cut-off events. [2024-06-21 21:36:16,269 INFO L125 PetriNetUnfolderBase]: For 402773/402773 co-relation queries the response was YES. [2024-06-21 21:36:16,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45637 conditions, 5274 events. 3315/5274 cut-off events. For 402773/402773 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 31911 event pairs, 638 based on Foata normal form. 4/5276 useless extension candidates. Maximal degree in co-relation 45502. Up to 4852 conditions per place. [2024-06-21 21:36:16,338 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 397 selfloop transitions, 58 changer transitions 0/460 dead transitions. [2024-06-21 21:36:16,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 460 transitions, 7864 flow [2024-06-21 21:36:16,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:36:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:36:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-21 21:36:16,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-21 21:36:16,339 INFO L175 Difference]: Start difference. First operand has 294 places, 438 transitions, 6819 flow. Second operand 7 states and 137 transitions. [2024-06-21 21:36:16,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 460 transitions, 7864 flow [2024-06-21 21:36:17,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 460 transitions, 7738 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 21:36:17,324 INFO L231 Difference]: Finished difference. Result has 294 places, 438 transitions, 6816 flow [2024-06-21 21:36:17,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6693, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6816, PETRI_PLACES=294, PETRI_TRANSITIONS=438} [2024-06-21 21:36:17,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-21 21:36:17,325 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 438 transitions, 6816 flow [2024-06-21 21:36:17,325 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) [2024-06-21 21:36:17,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:17,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:17,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 21:36:17,326 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)] === [2024-06-21 21:36:17,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1242112743, now seen corresponding path program 2 times [2024-06-21 21:36:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300908254] [2024-06-21 21:36:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:18,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300908254] [2024-06-21 21:36:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300908254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:18,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:18,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:36:18,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278840612] [2024-06-21 21:36:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:18,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:36:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:18,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:36:18,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:36:18,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:18,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 438 transitions, 6816 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) [2024-06-21 21:36:18,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:18,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:18,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:19,549 INFO L124 PetriNetUnfolderBase]: 3367/5353 cut-off events. [2024-06-21 21:36:19,550 INFO L125 PetriNetUnfolderBase]: For 435668/435668 co-relation queries the response was YES. [2024-06-21 21:36:19,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46228 conditions, 5353 events. 3367/5353 cut-off events. For 435668/435668 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 32410 event pairs, 607 based on Foata normal form. 14/5365 useless extension candidates. Maximal degree in co-relation 46092. Up to 4889 conditions per place. [2024-06-21 21:36:19,614 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 419 selfloop transitions, 39 changer transitions 0/463 dead transitions. [2024-06-21 21:36:19,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 463 transitions, 7892 flow [2024-06-21 21:36:19,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:36:19,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:36:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-21 21:36:19,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-21 21:36:19,616 INFO L175 Difference]: Start difference. First operand has 294 places, 438 transitions, 6816 flow. Second operand 6 states and 126 transitions. [2024-06-21 21:36:19,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 463 transitions, 7892 flow [2024-06-21 21:36:20,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 463 transitions, 7559 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-21 21:36:20,701 INFO L231 Difference]: Finished difference. Result has 292 places, 440 transitions, 6602 flow [2024-06-21 21:36:20,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6483, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6602, PETRI_PLACES=292, PETRI_TRANSITIONS=440} [2024-06-21 21:36:20,702 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-21 21:36:20,702 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 440 transitions, 6602 flow [2024-06-21 21:36:20,702 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) [2024-06-21 21:36:20,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:20,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:20,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 21:36:20,703 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:20,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1241607753, now seen corresponding path program 3 times [2024-06-21 21:36:20,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:20,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109771355] [2024-06-21 21:36:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:21,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:21,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109771355] [2024-06-21 21:36:21,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109771355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:21,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:21,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:36:21,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120796457] [2024-06-21 21:36:21,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:21,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:36:21,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:36:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:36:21,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:21,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 440 transitions, 6602 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) [2024-06-21 21:36:21,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:21,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:21,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:22,949 INFO L124 PetriNetUnfolderBase]: 3395/5397 cut-off events. [2024-06-21 21:36:22,950 INFO L125 PetriNetUnfolderBase]: For 429133/429133 co-relation queries the response was YES. [2024-06-21 21:36:22,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46627 conditions, 5397 events. 3395/5397 cut-off events. For 429133/429133 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 32821 event pairs, 601 based on Foata normal form. 8/5403 useless extension candidates. Maximal degree in co-relation 46490. Up to 4895 conditions per place. [2024-06-21 21:36:23,021 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 422 selfloop transitions, 42 changer transitions 0/469 dead transitions. [2024-06-21 21:36:23,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 469 transitions, 7742 flow [2024-06-21 21:36:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:36:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:36:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-21 21:36:23,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49825783972125437 [2024-06-21 21:36:23,023 INFO L175 Difference]: Start difference. First operand has 292 places, 440 transitions, 6602 flow. Second operand 7 states and 143 transitions. [2024-06-21 21:36:23,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 469 transitions, 7742 flow [2024-06-21 21:36:24,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 469 transitions, 7665 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-21 21:36:24,029 INFO L231 Difference]: Finished difference. Result has 295 places, 441 transitions, 6633 flow [2024-06-21 21:36:24,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6527, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6633, PETRI_PLACES=295, PETRI_TRANSITIONS=441} [2024-06-21 21:36:24,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2024-06-21 21:36:24,030 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 441 transitions, 6633 flow [2024-06-21 21:36:24,030 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) [2024-06-21 21:36:24,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:24,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:24,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 21:36:24,031 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:24,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:24,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1684941543, now seen corresponding path program 4 times [2024-06-21 21:36:24,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:24,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707294927] [2024-06-21 21:36:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:24,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:24,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707294927] [2024-06-21 21:36:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707294927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:36:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709858138] [2024-06-21 21:36:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:24,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:36:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:36:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:36:25,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:25,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 441 transitions, 6633 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:25,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:25,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:25,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:26,190 INFO L124 PetriNetUnfolderBase]: 3413/5431 cut-off events. [2024-06-21 21:36:26,191 INFO L125 PetriNetUnfolderBase]: For 430183/430183 co-relation queries the response was YES. [2024-06-21 21:36:26,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46504 conditions, 5431 events. 3413/5431 cut-off events. For 430183/430183 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 33016 event pairs, 653 based on Foata normal form. 12/5441 useless extension candidates. Maximal degree in co-relation 46366. Up to 4989 conditions per place. [2024-06-21 21:36:26,264 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 420 selfloop transitions, 40 changer transitions 0/465 dead transitions. [2024-06-21 21:36:26,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 465 transitions, 7731 flow [2024-06-21 21:36:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:36:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:36:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-21 21:36:26,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-21 21:36:26,265 INFO L175 Difference]: Start difference. First operand has 295 places, 441 transitions, 6633 flow. Second operand 7 states and 137 transitions. [2024-06-21 21:36:26,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 465 transitions, 7731 flow [2024-06-21 21:36:27,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 465 transitions, 7641 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 21:36:27,437 INFO L231 Difference]: Finished difference. Result has 297 places, 442 transitions, 6648 flow [2024-06-21 21:36:27,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6543, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6648, PETRI_PLACES=297, PETRI_TRANSITIONS=442} [2024-06-21 21:36:27,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-06-21 21:36:27,438 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 442 transitions, 6648 flow [2024-06-21 21:36:27,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:27,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:27,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:27,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 21:36:27,439 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:27,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:27,439 INFO L85 PathProgramCache]: Analyzing trace with hash 893255295, now seen corresponding path program 1 times [2024-06-21 21:36:27,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:27,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761352014] [2024-06-21 21:36:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:27,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:28,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:28,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761352014] [2024-06-21 21:36:28,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761352014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:28,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:28,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:36:28,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142737625] [2024-06-21 21:36:28,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:28,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:36:28,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:28,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:36:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:36:28,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:28,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 442 transitions, 6648 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) [2024-06-21 21:36:28,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:28,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:28,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:29,607 INFO L124 PetriNetUnfolderBase]: 3442/5475 cut-off events. [2024-06-21 21:36:29,608 INFO L125 PetriNetUnfolderBase]: For 429152/429152 co-relation queries the response was YES. [2024-06-21 21:36:29,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47060 conditions, 5475 events. 3442/5475 cut-off events. For 429152/429152 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 33398 event pairs, 555 based on Foata normal form. 4/5473 useless extension candidates. Maximal degree in co-relation 46921. Up to 4850 conditions per place. [2024-06-21 21:36:29,685 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 393 selfloop transitions, 112 changer transitions 0/510 dead transitions. [2024-06-21 21:36:29,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 510 transitions, 8600 flow [2024-06-21 21:36:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:36:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:36:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-21 21:36:29,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-21 21:36:29,686 INFO L175 Difference]: Start difference. First operand has 297 places, 442 transitions, 6648 flow. Second operand 9 states and 172 transitions. [2024-06-21 21:36:29,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 510 transitions, 8600 flow [2024-06-21 21:36:30,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 510 transitions, 8515 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 21:36:30,800 INFO L231 Difference]: Finished difference. Result has 304 places, 483 transitions, 7575 flow [2024-06-21 21:36:30,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6563, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7575, PETRI_PLACES=304, PETRI_TRANSITIONS=483} [2024-06-21 21:36:30,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-21 21:36:30,801 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 483 transitions, 7575 flow [2024-06-21 21:36:30,801 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) [2024-06-21 21:36:30,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:30,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:30,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 21:36:30,802 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:30,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:30,802 INFO L85 PathProgramCache]: Analyzing trace with hash -509603741, now seen corresponding path program 1 times [2024-06-21 21:36:30,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:30,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615640504] [2024-06-21 21:36:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:30,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615640504] [2024-06-21 21:36:31,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615640504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:31,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:31,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:36:31,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909325076] [2024-06-21 21:36:31,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:31,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:36:31,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:31,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:36:31,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:36:31,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:31,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 483 transitions, 7575 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:31,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:31,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:31,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:33,090 INFO L124 PetriNetUnfolderBase]: 3488/5527 cut-off events. [2024-06-21 21:36:33,090 INFO L125 PetriNetUnfolderBase]: For 451351/451351 co-relation queries the response was YES. [2024-06-21 21:36:33,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48767 conditions, 5527 events. 3488/5527 cut-off events. For 451351/451351 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 33635 event pairs, 556 based on Foata normal form. 4/5525 useless extension candidates. Maximal degree in co-relation 48624. Up to 4469 conditions per place. [2024-06-21 21:36:33,157 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 371 selfloop transitions, 199 changer transitions 0/575 dead transitions. [2024-06-21 21:36:33,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 575 transitions, 10090 flow [2024-06-21 21:36:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:36:33,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:36:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-21 21:36:33,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:36:33,159 INFO L175 Difference]: Start difference. First operand has 304 places, 483 transitions, 7575 flow. Second operand 10 states and 190 transitions. [2024-06-21 21:36:33,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 575 transitions, 10090 flow [2024-06-21 21:36:34,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 575 transitions, 9895 flow, removed 85 selfloop flow, removed 2 redundant places. [2024-06-21 21:36:34,469 INFO L231 Difference]: Finished difference. Result has 316 places, 548 transitions, 8985 flow [2024-06-21 21:36:34,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7380, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8985, PETRI_PLACES=316, PETRI_TRANSITIONS=548} [2024-06-21 21:36:34,469 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-21 21:36:34,470 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 548 transitions, 8985 flow [2024-06-21 21:36:34,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:34,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:34,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:34,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 21:36:34,470 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:34,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:34,471 INFO L85 PathProgramCache]: Analyzing trace with hash -509603865, now seen corresponding path program 2 times [2024-06-21 21:36:34,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:34,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337095227] [2024-06-21 21:36:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:34,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:35,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:35,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337095227] [2024-06-21 21:36:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337095227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:35,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:35,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:36:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039246200] [2024-06-21 21:36:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:35,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:36:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:35,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:36:35,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:36:35,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:35,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 548 transitions, 8985 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:35,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:35,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:35,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:36,603 INFO L124 PetriNetUnfolderBase]: 3504/5554 cut-off events. [2024-06-21 21:36:36,603 INFO L125 PetriNetUnfolderBase]: For 468800/468800 co-relation queries the response was YES. [2024-06-21 21:36:36,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50811 conditions, 5554 events. 3504/5554 cut-off events. For 468800/468800 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 33865 event pairs, 631 based on Foata normal form. 4/5552 useless extension candidates. Maximal degree in co-relation 50662. Up to 5005 conditions per place. [2024-06-21 21:36:36,686 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 457 selfloop transitions, 111 changer transitions 0/573 dead transitions. [2024-06-21 21:36:36,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 573 transitions, 10359 flow [2024-06-21 21:36:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:36:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:36:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-21 21:36:36,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-21 21:36:36,688 INFO L175 Difference]: Start difference. First operand has 316 places, 548 transitions, 8985 flow. Second operand 9 states and 167 transitions. [2024-06-21 21:36:36,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 573 transitions, 10359 flow [2024-06-21 21:36:38,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 573 transitions, 10217 flow, removed 68 selfloop flow, removed 2 redundant places. [2024-06-21 21:36:38,008 INFO L231 Difference]: Finished difference. Result has 323 places, 551 transitions, 9113 flow [2024-06-21 21:36:38,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8843, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9113, PETRI_PLACES=323, PETRI_TRANSITIONS=551} [2024-06-21 21:36:38,009 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-06-21 21:36:38,009 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 551 transitions, 9113 flow [2024-06-21 21:36:38,009 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) [2024-06-21 21:36:38,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:38,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:38,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 21:36:38,010 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:38,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:38,010 INFO L85 PathProgramCache]: Analyzing trace with hash 896112255, now seen corresponding path program 3 times [2024-06-21 21:36:38,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:38,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215463751] [2024-06-21 21:36:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:38,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:38,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:38,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215463751] [2024-06-21 21:36:38,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215463751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:38,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:38,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:36:38,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322056662] [2024-06-21 21:36:38,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:38,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:36:38,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:36:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:36:39,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:39,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 551 transitions, 9113 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) [2024-06-21 21:36:39,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:39,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:39,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:40,369 INFO L124 PetriNetUnfolderBase]: 3561/5653 cut-off events. [2024-06-21 21:36:40,369 INFO L125 PetriNetUnfolderBase]: For 499241/499241 co-relation queries the response was YES. [2024-06-21 21:36:40,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51166 conditions, 5653 events. 3561/5653 cut-off events. For 499241/499241 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 34611 event pairs, 650 based on Foata normal form. 14/5661 useless extension candidates. Maximal degree in co-relation 51015. Up to 4925 conditions per place. [2024-06-21 21:36:40,454 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 419 selfloop transitions, 157 changer transitions 0/581 dead transitions. [2024-06-21 21:36:40,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 581 transitions, 10476 flow [2024-06-21 21:36:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:36:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:36:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-21 21:36:40,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-21 21:36:40,456 INFO L175 Difference]: Start difference. First operand has 323 places, 551 transitions, 9113 flow. Second operand 9 states and 170 transitions. [2024-06-21 21:36:40,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 581 transitions, 10476 flow [2024-06-21 21:36:42,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 581 transitions, 10261 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 21:36:42,120 INFO L231 Difference]: Finished difference. Result has 326 places, 558 transitions, 9319 flow [2024-06-21 21:36:42,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8899, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9319, PETRI_PLACES=326, PETRI_TRANSITIONS=558} [2024-06-21 21:36:42,121 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-21 21:36:42,121 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 558 transitions, 9319 flow [2024-06-21 21:36:42,121 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) [2024-06-21 21:36:42,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:42,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:42,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 21:36:42,122 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:42,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:42,122 INFO L85 PathProgramCache]: Analyzing trace with hash -763321593, now seen corresponding path program 2 times [2024-06-21 21:36:42,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:42,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813575860] [2024-06-21 21:36:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:42,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813575860] [2024-06-21 21:36:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813575860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:42,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:42,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:36:42,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188386582] [2024-06-21 21:36:42,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:42,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:36:42,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:36:42,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:36:42,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:42,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 558 transitions, 9319 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) [2024-06-21 21:36:42,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:42,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:42,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:44,358 INFO L124 PetriNetUnfolderBase]: 3591/5679 cut-off events. [2024-06-21 21:36:44,359 INFO L125 PetriNetUnfolderBase]: For 494710/494710 co-relation queries the response was YES. [2024-06-21 21:36:44,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51927 conditions, 5679 events. 3591/5679 cut-off events. For 494710/494710 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 34631 event pairs, 600 based on Foata normal form. 6/5679 useless extension candidates. Maximal degree in co-relation 51775. Up to 4304 conditions per place. [2024-06-21 21:36:44,446 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 320 selfloop transitions, 269 changer transitions 0/594 dead transitions. [2024-06-21 21:36:44,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 594 transitions, 11163 flow [2024-06-21 21:36:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:36:44,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:36:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-21 21:36:44,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47696476964769646 [2024-06-21 21:36:44,448 INFO L175 Difference]: Start difference. First operand has 326 places, 558 transitions, 9319 flow. Second operand 9 states and 176 transitions. [2024-06-21 21:36:44,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 594 transitions, 11163 flow [2024-06-21 21:36:46,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 594 transitions, 10836 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 21:36:46,032 INFO L231 Difference]: Finished difference. Result has 329 places, 565 transitions, 9709 flow [2024-06-21 21:36:46,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8992, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9709, PETRI_PLACES=329, PETRI_TRANSITIONS=565} [2024-06-21 21:36:46,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-06-21 21:36:46,033 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 565 transitions, 9709 flow [2024-06-21 21:36:46,033 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) [2024-06-21 21:36:46,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:46,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:46,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 21:36:46,034 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:46,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:46,034 INFO L85 PathProgramCache]: Analyzing trace with hash 896112379, now seen corresponding path program 3 times [2024-06-21 21:36:46,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:46,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618740691] [2024-06-21 21:36:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:46,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:46,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:46,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618740691] [2024-06-21 21:36:46,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618740691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:46,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:36:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686911261] [2024-06-21 21:36:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:46,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:36:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:36:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:36:46,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:46,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 565 transitions, 9709 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:46,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:46,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:46,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:48,461 INFO L124 PetriNetUnfolderBase]: 3611/5716 cut-off events. [2024-06-21 21:36:48,461 INFO L125 PetriNetUnfolderBase]: For 505212/505212 co-relation queries the response was YES. [2024-06-21 21:36:48,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53308 conditions, 5716 events. 3611/5716 cut-off events. For 505212/505212 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 34958 event pairs, 557 based on Foata normal form. 4/5714 useless extension candidates. Maximal degree in co-relation 53155. Up to 4798 conditions per place. [2024-06-21 21:36:48,542 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 410 selfloop transitions, 181 changer transitions 0/596 dead transitions. [2024-06-21 21:36:48,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 596 transitions, 11413 flow [2024-06-21 21:36:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:36:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:36:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-21 21:36:48,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-21 21:36:48,544 INFO L175 Difference]: Start difference. First operand has 329 places, 565 transitions, 9709 flow. Second operand 10 states and 189 transitions. [2024-06-21 21:36:48,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 596 transitions, 11413 flow [2024-06-21 21:36:50,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 596 transitions, 10889 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-21 21:36:50,566 INFO L231 Difference]: Finished difference. Result has 333 places, 571 transitions, 9698 flow [2024-06-21 21:36:50,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9185, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9698, PETRI_PLACES=333, PETRI_TRANSITIONS=571} [2024-06-21 21:36:50,567 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-21 21:36:50,567 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 571 transitions, 9698 flow [2024-06-21 21:36:50,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:50,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:50,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:50,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 21:36:50,568 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:50,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:50,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1011408199, now seen corresponding path program 4 times [2024-06-21 21:36:50,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:50,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963303409] [2024-06-21 21:36:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:50,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963303409] [2024-06-21 21:36:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963303409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:51,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:51,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:36:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137977551] [2024-06-21 21:36:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:51,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:36:51,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:36:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:36:51,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:51,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 571 transitions, 9698 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) [2024-06-21 21:36:51,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:51,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:51,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:53,246 INFO L124 PetriNetUnfolderBase]: 3631/5749 cut-off events. [2024-06-21 21:36:53,247 INFO L125 PetriNetUnfolderBase]: For 518207/518207 co-relation queries the response was YES. [2024-06-21 21:36:53,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53579 conditions, 5749 events. 3631/5749 cut-off events. For 518207/518207 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 35197 event pairs, 609 based on Foata normal form. 4/5751 useless extension candidates. Maximal degree in co-relation 53425. Up to 5304 conditions per place. [2024-06-21 21:36:53,329 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 533 selfloop transitions, 64 changer transitions 0/602 dead transitions. [2024-06-21 21:36:53,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 602 transitions, 11467 flow [2024-06-21 21:36:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:36:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:36:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-21 21:36:53,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43458980044345896 [2024-06-21 21:36:53,331 INFO L175 Difference]: Start difference. First operand has 333 places, 571 transitions, 9698 flow. Second operand 11 states and 196 transitions. [2024-06-21 21:36:53,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 602 transitions, 11467 flow [2024-06-21 21:36:55,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 602 transitions, 10971 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-21 21:36:55,155 INFO L231 Difference]: Finished difference. Result has 339 places, 578 transitions, 9552 flow [2024-06-21 21:36:55,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9208, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9552, PETRI_PLACES=339, PETRI_TRANSITIONS=578} [2024-06-21 21:36:55,156 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2024-06-21 21:36:55,156 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 578 transitions, 9552 flow [2024-06-21 21:36:55,156 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) [2024-06-21 21:36:55,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:55,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:55,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 21:36:55,156 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:55,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -391516061, now seen corresponding path program 5 times [2024-06-21 21:36:55,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:55,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989079802] [2024-06-21 21:36:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:55,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:36:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:36:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:36:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989079802] [2024-06-21 21:36:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989079802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:36:56,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:36:56,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:36:56,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967886792] [2024-06-21 21:36:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:36:56,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:36:56,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:36:56,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:36:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:36:56,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:36:56,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 578 transitions, 9552 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:56,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:36:56,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:36:56,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:36:57,837 INFO L124 PetriNetUnfolderBase]: 3705/5844 cut-off events. [2024-06-21 21:36:57,837 INFO L125 PetriNetUnfolderBase]: For 549791/549791 co-relation queries the response was YES. [2024-06-21 21:36:57,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54633 conditions, 5844 events. 3705/5844 cut-off events. For 549791/549791 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 35627 event pairs, 611 based on Foata normal form. 6/5848 useless extension candidates. Maximal degree in co-relation 54477. Up to 5234 conditions per place. [2024-06-21 21:36:57,913 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 514 selfloop transitions, 101 changer transitions 0/620 dead transitions. [2024-06-21 21:36:57,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 620 transitions, 11725 flow [2024-06-21 21:36:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:36:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:36:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-21 21:36:57,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 21:36:57,915 INFO L175 Difference]: Start difference. First operand has 339 places, 578 transitions, 9552 flow. Second operand 11 states and 205 transitions. [2024-06-21 21:36:57,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 620 transitions, 11725 flow [2024-06-21 21:36:59,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 620 transitions, 11556 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-21 21:36:59,765 INFO L231 Difference]: Finished difference. Result has 345 places, 594 transitions, 10034 flow [2024-06-21 21:36:59,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9383, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10034, PETRI_PLACES=345, PETRI_TRANSITIONS=594} [2024-06-21 21:36:59,766 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 303 predicate places. [2024-06-21 21:36:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 594 transitions, 10034 flow [2024-06-21 21:36:59,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:36:59,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:36:59,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:36:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 21:36:59,767 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:36:59,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:36:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1011403425, now seen corresponding path program 4 times [2024-06-21 21:36:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:36:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945953466] [2024-06-21 21:36:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:36:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:36:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:00,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:00,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945953466] [2024-06-21 21:37:00,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945953466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:00,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:00,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:37:00,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212294034] [2024-06-21 21:37:00,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:00,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:37:00,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:37:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:37:00,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:00,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 594 transitions, 10034 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) [2024-06-21 21:37:00,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:00,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:00,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:02,542 INFO L124 PetriNetUnfolderBase]: 3988/6296 cut-off events. [2024-06-21 21:37:02,542 INFO L125 PetriNetUnfolderBase]: For 794664/794664 co-relation queries the response was YES. [2024-06-21 21:37:02,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58564 conditions, 6296 events. 3988/6296 cut-off events. For 794664/794664 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 38544 event pairs, 709 based on Foata normal form. 85/6379 useless extension candidates. Maximal degree in co-relation 58407. Up to 5449 conditions per place. [2024-06-21 21:37:02,643 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 553 selfloop transitions, 65 changer transitions 8/631 dead transitions. [2024-06-21 21:37:02,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 631 transitions, 11675 flow [2024-06-21 21:37:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:37:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:37:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-21 21:37:02,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-21 21:37:02,645 INFO L175 Difference]: Start difference. First operand has 345 places, 594 transitions, 10034 flow. Second operand 10 states and 191 transitions. [2024-06-21 21:37:02,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 631 transitions, 11675 flow [2024-06-21 21:37:04,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 631 transitions, 11367 flow, removed 103 selfloop flow, removed 8 redundant places. [2024-06-21 21:37:04,621 INFO L231 Difference]: Finished difference. Result has 348 places, 595 transitions, 9971 flow [2024-06-21 21:37:04,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9756, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9971, PETRI_PLACES=348, PETRI_TRANSITIONS=595} [2024-06-21 21:37:04,621 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2024-06-21 21:37:04,622 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 595 transitions, 9971 flow [2024-06-21 21:37:04,622 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) [2024-06-21 21:37:04,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:04,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:04,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 21:37:04,622 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:04,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1011588123, now seen corresponding path program 1 times [2024-06-21 21:37:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:04,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336489238] [2024-06-21 21:37:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:04,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:05,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:05,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336489238] [2024-06-21 21:37:05,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336489238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:05,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:05,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:37:05,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383218734] [2024-06-21 21:37:05,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:05,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:37:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:37:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:37:05,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:05,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 595 transitions, 9971 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:05,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:05,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:05,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:07,071 INFO L124 PetriNetUnfolderBase]: 3828/6050 cut-off events. [2024-06-21 21:37:07,071 INFO L125 PetriNetUnfolderBase]: For 578944/578944 co-relation queries the response was YES. [2024-06-21 21:37:07,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57029 conditions, 6050 events. 3828/6050 cut-off events. For 578944/578944 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 37153 event pairs, 659 based on Foata normal form. 2/6050 useless extension candidates. Maximal degree in co-relation 56870. Up to 5709 conditions per place. [2024-06-21 21:37:07,172 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 579 selfloop transitions, 29 changer transitions 0/613 dead transitions. [2024-06-21 21:37:07,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 613 transitions, 11287 flow [2024-06-21 21:37:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:37:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:37:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-21 21:37:07,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-21 21:37:07,175 INFO L175 Difference]: Start difference. First operand has 348 places, 595 transitions, 9971 flow. Second operand 8 states and 141 transitions. [2024-06-21 21:37:07,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 613 transitions, 11287 flow [2024-06-21 21:37:09,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 613 transitions, 11102 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-21 21:37:09,508 INFO L231 Difference]: Finished difference. Result has 349 places, 597 transitions, 9903 flow [2024-06-21 21:37:09,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9786, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9903, PETRI_PLACES=349, PETRI_TRANSITIONS=597} [2024-06-21 21:37:09,509 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-06-21 21:37:09,509 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 597 transitions, 9903 flow [2024-06-21 21:37:09,510 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) [2024-06-21 21:37:09,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:09,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:09,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 21:37:09,510 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:09,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:09,511 INFO L85 PathProgramCache]: Analyzing trace with hash 576089217, now seen corresponding path program 6 times [2024-06-21 21:37:09,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:09,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830218857] [2024-06-21 21:37:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:09,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:10,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:10,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830218857] [2024-06-21 21:37:10,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830218857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:10,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:10,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:37:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999291682] [2024-06-21 21:37:10,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:37:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:37:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:37:10,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:10,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 597 transitions, 9903 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:10,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:10,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:10,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:11,961 INFO L124 PetriNetUnfolderBase]: 3858/6096 cut-off events. [2024-06-21 21:37:11,961 INFO L125 PetriNetUnfolderBase]: For 604245/604245 co-relation queries the response was YES. [2024-06-21 21:37:12,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57273 conditions, 6096 events. 3858/6096 cut-off events. For 604245/604245 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 37496 event pairs, 656 based on Foata normal form. 6/6100 useless extension candidates. Maximal degree in co-relation 57113. Up to 5609 conditions per place. [2024-06-21 21:37:12,059 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 560 selfloop transitions, 60 changer transitions 0/625 dead transitions. [2024-06-21 21:37:12,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 625 transitions, 11463 flow [2024-06-21 21:37:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:37:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:37:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-21 21:37:12,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 21:37:12,061 INFO L175 Difference]: Start difference. First operand has 349 places, 597 transitions, 9903 flow. Second operand 9 states and 164 transitions. [2024-06-21 21:37:12,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 625 transitions, 11463 flow [2024-06-21 21:37:14,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 625 transitions, 11299 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 21:37:14,422 INFO L231 Difference]: Finished difference. Result has 352 places, 604 transitions, 10087 flow [2024-06-21 21:37:14,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9739, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10087, PETRI_PLACES=352, PETRI_TRANSITIONS=604} [2024-06-21 21:37:14,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-21 21:37:14,423 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 604 transitions, 10087 flow [2024-06-21 21:37:14,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:14,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:14,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:14,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 21:37:14,424 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:14,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:14,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1478072839, now seen corresponding path program 2 times [2024-06-21 21:37:14,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:14,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051119818] [2024-06-21 21:37:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:14,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:15,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:15,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051119818] [2024-06-21 21:37:15,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051119818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:15,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:37:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232844840] [2024-06-21 21:37:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:15,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:37:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:15,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:37:15,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:37:15,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:15,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 604 transitions, 10087 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:15,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:15,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:15,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:16,766 INFO L124 PetriNetUnfolderBase]: 3866/6104 cut-off events. [2024-06-21 21:37:16,767 INFO L125 PetriNetUnfolderBase]: For 607331/607331 co-relation queries the response was YES. [2024-06-21 21:37:16,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57952 conditions, 6104 events. 3866/6104 cut-off events. For 607331/607331 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 37477 event pairs, 658 based on Foata normal form. 2/6104 useless extension candidates. Maximal degree in co-relation 57792. Up to 5757 conditions per place. [2024-06-21 21:37:16,863 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 585 selfloop transitions, 31 changer transitions 0/621 dead transitions. [2024-06-21 21:37:16,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 621 transitions, 11421 flow [2024-06-21 21:37:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:37:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:37:16,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-21 21:37:16,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-21 21:37:16,865 INFO L175 Difference]: Start difference. First operand has 352 places, 604 transitions, 10087 flow. Second operand 7 states and 127 transitions. [2024-06-21 21:37:16,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 621 transitions, 11421 flow [2024-06-21 21:37:19,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 621 transitions, 11163 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-21 21:37:19,206 INFO L231 Difference]: Finished difference. Result has 352 places, 606 transitions, 9957 flow [2024-06-21 21:37:19,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9829, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9957, PETRI_PLACES=352, PETRI_TRANSITIONS=606} [2024-06-21 21:37:19,206 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-21 21:37:19,206 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 606 transitions, 9957 flow [2024-06-21 21:37:19,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:19,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:19,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:19,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 21:37:19,207 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:19,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:19,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1241600809, now seen corresponding path program 3 times [2024-06-21 21:37:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:19,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680616186] [2024-06-21 21:37:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:19,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680616186] [2024-06-21 21:37:20,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680616186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:20,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:20,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:37:20,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506836349] [2024-06-21 21:37:20,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:37:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:37:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:37:20,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:20,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 606 transitions, 9957 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) [2024-06-21 21:37:20,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:20,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:20,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:21,550 INFO L124 PetriNetUnfolderBase]: 3874/6112 cut-off events. [2024-06-21 21:37:21,550 INFO L125 PetriNetUnfolderBase]: For 619581/619581 co-relation queries the response was YES. [2024-06-21 21:37:21,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57904 conditions, 6112 events. 3874/6112 cut-off events. For 619581/619581 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 37514 event pairs, 709 based on Foata normal form. 2/6112 useless extension candidates. Maximal degree in co-relation 57743. Up to 5797 conditions per place. [2024-06-21 21:37:21,651 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 597 selfloop transitions, 16 changer transitions 0/618 dead transitions. [2024-06-21 21:37:21,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 618 transitions, 11267 flow [2024-06-21 21:37:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:37:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:37:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-21 21:37:21,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-06-21 21:37:21,652 INFO L175 Difference]: Start difference. First operand has 352 places, 606 transitions, 9957 flow. Second operand 6 states and 107 transitions. [2024-06-21 21:37:21,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 618 transitions, 11267 flow [2024-06-21 21:37:24,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 618 transitions, 11155 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-21 21:37:24,094 INFO L231 Difference]: Finished difference. Result has 353 places, 608 transitions, 9944 flow [2024-06-21 21:37:24,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9849, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9944, PETRI_PLACES=353, PETRI_TRANSITIONS=608} [2024-06-21 21:37:24,094 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-21 21:37:24,095 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 608 transitions, 9944 flow [2024-06-21 21:37:24,095 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) [2024-06-21 21:37:24,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:24,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:24,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 21:37:24,095 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:24,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1241897479, now seen corresponding path program 4 times [2024-06-21 21:37:24,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:24,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536875584] [2024-06-21 21:37:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:24,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:25,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:25,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536875584] [2024-06-21 21:37:25,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536875584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:25,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:25,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:37:25,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351551969] [2024-06-21 21:37:25,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:25,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:37:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:37:25,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:37:25,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:25,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 608 transitions, 9944 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) [2024-06-21 21:37:25,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:25,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:25,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:26,513 INFO L124 PetriNetUnfolderBase]: 3869/6105 cut-off events. [2024-06-21 21:37:26,514 INFO L125 PetriNetUnfolderBase]: For 612062/612062 co-relation queries the response was YES. [2024-06-21 21:37:26,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57539 conditions, 6105 events. 3869/6105 cut-off events. For 612062/612062 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 37453 event pairs, 664 based on Foata normal form. 2/6105 useless extension candidates. Maximal degree in co-relation 57377. Up to 5748 conditions per place. [2024-06-21 21:37:26,609 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 582 selfloop transitions, 36 changer transitions 0/623 dead transitions. [2024-06-21 21:37:26,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 623 transitions, 11278 flow [2024-06-21 21:37:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:37:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:37:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-21 21:37:26,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45934959349593496 [2024-06-21 21:37:26,610 INFO L175 Difference]: Start difference. First operand has 353 places, 608 transitions, 9944 flow. Second operand 6 states and 113 transitions. [2024-06-21 21:37:26,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 623 transitions, 11278 flow [2024-06-21 21:37:28,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 623 transitions, 11199 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-21 21:37:28,854 INFO L231 Difference]: Finished difference. Result has 355 places, 610 transitions, 10011 flow [2024-06-21 21:37:28,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9865, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10011, PETRI_PLACES=355, PETRI_TRANSITIONS=610} [2024-06-21 21:37:28,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-06-21 21:37:28,855 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 610 transitions, 10011 flow [2024-06-21 21:37:28,855 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) [2024-06-21 21:37:28,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:28,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:28,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 21:37:28,856 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:28,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1241897727, now seen corresponding path program 1 times [2024-06-21 21:37:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:28,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598855770] [2024-06-21 21:37:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:29,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:29,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598855770] [2024-06-21 21:37:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598855770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:29,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:29,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:37:29,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836878623] [2024-06-21 21:37:29,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:29,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:37:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:37:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:37:29,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:29,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 610 transitions, 10011 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:29,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:29,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:29,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:31,184 INFO L124 PetriNetUnfolderBase]: 3916/6155 cut-off events. [2024-06-21 21:37:31,184 INFO L125 PetriNetUnfolderBase]: For 642303/642303 co-relation queries the response was YES. [2024-06-21 21:37:31,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58705 conditions, 6155 events. 3916/6155 cut-off events. For 642303/642303 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 37638 event pairs, 675 based on Foata normal form. 5/6158 useless extension candidates. Maximal degree in co-relation 58542. Up to 5423 conditions per place. [2024-06-21 21:37:31,278 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 501 selfloop transitions, 137 changer transitions 0/643 dead transitions. [2024-06-21 21:37:31,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 643 transitions, 11741 flow [2024-06-21 21:37:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:37:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:37:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-21 21:37:31,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519163763066202 [2024-06-21 21:37:31,279 INFO L175 Difference]: Start difference. First operand has 355 places, 610 transitions, 10011 flow. Second operand 7 states and 149 transitions. [2024-06-21 21:37:31,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 643 transitions, 11741 flow [2024-06-21 21:37:33,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 643 transitions, 11587 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-21 21:37:33,364 INFO L231 Difference]: Finished difference. Result has 359 places, 619 transitions, 10499 flow [2024-06-21 21:37:33,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9861, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10499, PETRI_PLACES=359, PETRI_TRANSITIONS=619} [2024-06-21 21:37:33,365 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-06-21 21:37:33,365 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 619 transitions, 10499 flow [2024-06-21 21:37:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:33,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:33,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:33,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 21:37:33,365 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:33,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash 575911463, now seen corresponding path program 5 times [2024-06-21 21:37:33,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:33,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484977559] [2024-06-21 21:37:33,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:34,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:34,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484977559] [2024-06-21 21:37:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484977559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:34,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:34,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:37:34,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878322152] [2024-06-21 21:37:34,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:34,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:37:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:37:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:37:34,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:34,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 619 transitions, 10499 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:34,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:34,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:34,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:36,052 INFO L124 PetriNetUnfolderBase]: 4208/6620 cut-off events. [2024-06-21 21:37:36,052 INFO L125 PetriNetUnfolderBase]: For 913396/913396 co-relation queries the response was YES. [2024-06-21 21:37:36,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63177 conditions, 6620 events. 4208/6620 cut-off events. For 913396/913396 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 40697 event pairs, 639 based on Foata normal form. 85/6703 useless extension candidates. Maximal degree in co-relation 63012. Up to 5318 conditions per place. [2024-06-21 21:37:36,159 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 537 selfloop transitions, 124 changer transitions 9/675 dead transitions. [2024-06-21 21:37:36,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 675 transitions, 12410 flow [2024-06-21 21:37:36,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:37:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:37:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-21 21:37:36,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257452574525745 [2024-06-21 21:37:36,161 INFO L175 Difference]: Start difference. First operand has 359 places, 619 transitions, 10499 flow. Second operand 9 states and 194 transitions. [2024-06-21 21:37:36,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 675 transitions, 12410 flow [2024-06-21 21:37:38,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 675 transitions, 12311 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-21 21:37:38,338 INFO L231 Difference]: Finished difference. Result has 366 places, 626 transitions, 10851 flow [2024-06-21 21:37:38,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10400, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10851, PETRI_PLACES=366, PETRI_TRANSITIONS=626} [2024-06-21 21:37:38,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-21 21:37:38,339 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 626 transitions, 10851 flow [2024-06-21 21:37:38,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:38,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:38,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:38,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 21:37:38,340 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:38,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 575911587, now seen corresponding path program 7 times [2024-06-21 21:37:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108886141] [2024-06-21 21:37:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:38,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:39,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108886141] [2024-06-21 21:37:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108886141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:39,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:39,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:37:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075764751] [2024-06-21 21:37:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:39,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:37:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:37:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:37:39,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:39,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 626 transitions, 10851 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) [2024-06-21 21:37:39,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:39,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:39,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:41,095 INFO L124 PetriNetUnfolderBase]: 4086/6432 cut-off events. [2024-06-21 21:37:41,098 INFO L125 PetriNetUnfolderBase]: For 698164/698164 co-relation queries the response was YES. [2024-06-21 21:37:41,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63776 conditions, 6432 events. 4086/6432 cut-off events. For 698164/698164 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39617 event pairs, 685 based on Foata normal form. 6/6436 useless extension candidates. Maximal degree in co-relation 63608. Up to 5482 conditions per place. [2024-06-21 21:37:41,201 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 495 selfloop transitions, 176 changer transitions 1/677 dead transitions. [2024-06-21 21:37:41,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 677 transitions, 13306 flow [2024-06-21 21:37:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:37:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:37:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-21 21:37:41,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975609756097561 [2024-06-21 21:37:41,203 INFO L175 Difference]: Start difference. First operand has 366 places, 626 transitions, 10851 flow. Second operand 10 states and 204 transitions. [2024-06-21 21:37:41,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 677 transitions, 13306 flow [2024-06-21 21:37:43,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 677 transitions, 13017 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-21 21:37:43,761 INFO L231 Difference]: Finished difference. Result has 370 places, 638 transitions, 11311 flow [2024-06-21 21:37:43,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10562, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11311, PETRI_PLACES=370, PETRI_TRANSITIONS=638} [2024-06-21 21:37:43,769 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-21 21:37:43,769 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 638 transitions, 11311 flow [2024-06-21 21:37:43,769 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) [2024-06-21 21:37:43,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:43,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:43,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 21:37:43,770 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:43,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash 362042091, now seen corresponding path program 1 times [2024-06-21 21:37:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:43,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396332872] [2024-06-21 21:37:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:43,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:44,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396332872] [2024-06-21 21:37:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396332872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:44,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:44,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:37:44,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795114605] [2024-06-21 21:37:44,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:44,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:37:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:44,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:37:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:37:44,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:44,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 638 transitions, 11311 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:44,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:44,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:44,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:46,257 INFO L124 PetriNetUnfolderBase]: 4091/6449 cut-off events. [2024-06-21 21:37:46,257 INFO L125 PetriNetUnfolderBase]: For 696755/696755 co-relation queries the response was YES. [2024-06-21 21:37:46,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64327 conditions, 6449 events. 4091/6449 cut-off events. For 696755/696755 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39816 event pairs, 717 based on Foata normal form. 1/6448 useless extension candidates. Maximal degree in co-relation 64158. Up to 6039 conditions per place. [2024-06-21 21:37:46,355 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 612 selfloop transitions, 53 changer transitions 0/670 dead transitions. [2024-06-21 21:37:46,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 670 transitions, 13114 flow [2024-06-21 21:37:46,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:37:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:37:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:37:46,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:37:46,356 INFO L175 Difference]: Start difference. First operand has 370 places, 638 transitions, 11311 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:37:46,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 670 transitions, 13114 flow [2024-06-21 21:37:49,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 670 transitions, 12685 flow, removed 122 selfloop flow, removed 6 redundant places. [2024-06-21 21:37:49,465 INFO L231 Difference]: Finished difference. Result has 373 places, 646 transitions, 11254 flow [2024-06-21 21:37:49,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10882, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11254, PETRI_PLACES=373, PETRI_TRANSITIONS=646} [2024-06-21 21:37:49,466 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 331 predicate places. [2024-06-21 21:37:49,466 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 646 transitions, 11254 flow [2024-06-21 21:37:49,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:49,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:49,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:49,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 21:37:49,467 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:49,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1059754411, now seen corresponding path program 2 times [2024-06-21 21:37:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:49,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572105016] [2024-06-21 21:37:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:50,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572105016] [2024-06-21 21:37:50,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572105016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:50,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:50,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:37:50,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536990746] [2024-06-21 21:37:50,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:50,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:37:50,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:37:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:37:50,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:50,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 646 transitions, 11254 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:50,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:50,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:50,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:51,949 INFO L124 PetriNetUnfolderBase]: 4101/6463 cut-off events. [2024-06-21 21:37:51,949 INFO L125 PetriNetUnfolderBase]: For 709167/709167 co-relation queries the response was YES. [2024-06-21 21:37:52,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64441 conditions, 6463 events. 4101/6463 cut-off events. For 709167/709167 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39937 event pairs, 729 based on Foata normal form. 1/6462 useless extension candidates. Maximal degree in co-relation 64269. Up to 6080 conditions per place. [2024-06-21 21:37:52,052 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 621 selfloop transitions, 46 changer transitions 0/672 dead transitions. [2024-06-21 21:37:52,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 672 transitions, 12771 flow [2024-06-21 21:37:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:37:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:37:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-21 21:37:52,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-21 21:37:52,054 INFO L175 Difference]: Start difference. First operand has 373 places, 646 transitions, 11254 flow. Second operand 8 states and 147 transitions. [2024-06-21 21:37:52,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 672 transitions, 12771 flow [2024-06-21 21:37:55,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 672 transitions, 12564 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-21 21:37:55,101 INFO L231 Difference]: Finished difference. Result has 378 places, 652 transitions, 11276 flow [2024-06-21 21:37:55,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11081, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11276, PETRI_PLACES=378, PETRI_TRANSITIONS=652} [2024-06-21 21:37:55,101 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-21 21:37:55,102 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 652 transitions, 11276 flow [2024-06-21 21:37:55,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:55,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:55,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:55,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 21:37:55,102 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:55,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1734568265, now seen corresponding path program 3 times [2024-06-21 21:37:55,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375426319] [2024-06-21 21:37:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:55,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:37:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:37:55,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:37:55,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375426319] [2024-06-21 21:37:55,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375426319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:37:55,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:37:55,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:37:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229171950] [2024-06-21 21:37:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:37:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:37:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:37:55,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:37:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:37:55,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:37:55,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 652 transitions, 11276 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:55,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:37:55,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:37:55,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:37:57,532 INFO L124 PetriNetUnfolderBase]: 4098/6448 cut-off events. [2024-06-21 21:37:57,533 INFO L125 PetriNetUnfolderBase]: For 718097/718097 co-relation queries the response was YES. [2024-06-21 21:37:57,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64393 conditions, 6448 events. 4098/6448 cut-off events. For 718097/718097 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 39754 event pairs, 719 based on Foata normal form. 1/6447 useless extension candidates. Maximal degree in co-relation 64219. Up to 6076 conditions per place. [2024-06-21 21:37:57,631 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 619 selfloop transitions, 43 changer transitions 0/667 dead transitions. [2024-06-21 21:37:57,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 667 transitions, 12642 flow [2024-06-21 21:37:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:37:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:37:57,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-21 21:37:57,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-21 21:37:57,632 INFO L175 Difference]: Start difference. First operand has 378 places, 652 transitions, 11276 flow. Second operand 8 states and 142 transitions. [2024-06-21 21:37:57,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 667 transitions, 12642 flow [2024-06-21 21:37:59,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 667 transitions, 12506 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-21 21:37:59,837 INFO L231 Difference]: Finished difference. Result has 381 places, 652 transitions, 11232 flow [2024-06-21 21:37:59,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11140, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11232, PETRI_PLACES=381, PETRI_TRANSITIONS=652} [2024-06-21 21:37:59,838 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-21 21:37:59,838 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 652 transitions, 11232 flow [2024-06-21 21:37:59,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:37:59,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:37:59,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:37:59,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 21:37:59,839 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:37:59,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:37:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 248954281, now seen corresponding path program 1 times [2024-06-21 21:37:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:37:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882033800] [2024-06-21 21:37:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:37:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:37:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:00,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:00,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882033800] [2024-06-21 21:38:00,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882033800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:00,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:00,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:38:00,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524049645] [2024-06-21 21:38:00,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:00,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:38:00,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:00,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:38:00,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:38:00,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:00,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 652 transitions, 11232 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:00,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:00,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:00,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:02,397 INFO L124 PetriNetUnfolderBase]: 4106/6471 cut-off events. [2024-06-21 21:38:02,397 INFO L125 PetriNetUnfolderBase]: For 735455/735455 co-relation queries the response was YES. [2024-06-21 21:38:02,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64542 conditions, 6471 events. 4106/6471 cut-off events. For 735455/735455 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 40056 event pairs, 688 based on Foata normal form. 2/6471 useless extension candidates. Maximal degree in co-relation 64367. Up to 6030 conditions per place. [2024-06-21 21:38:02,492 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 629 selfloop transitions, 49 changer transitions 0/683 dead transitions. [2024-06-21 21:38:02,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 683 transitions, 12936 flow [2024-06-21 21:38:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:38:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:38:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-21 21:38:02,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:38:02,493 INFO L175 Difference]: Start difference. First operand has 381 places, 652 transitions, 11232 flow. Second operand 8 states and 152 transitions. [2024-06-21 21:38:02,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 683 transitions, 12936 flow [2024-06-21 21:38:05,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 683 transitions, 12788 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 21:38:05,218 INFO L231 Difference]: Finished difference. Result has 384 places, 657 transitions, 11303 flow [2024-06-21 21:38:05,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11084, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11303, PETRI_PLACES=384, PETRI_TRANSITIONS=657} [2024-06-21 21:38:05,219 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 342 predicate places. [2024-06-21 21:38:05,219 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 657 transitions, 11303 flow [2024-06-21 21:38:05,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:05,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:05,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:05,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 21:38:05,219 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:05,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash 249193291, now seen corresponding path program 2 times [2024-06-21 21:38:05,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:05,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644209508] [2024-06-21 21:38:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:05,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:05,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644209508] [2024-06-21 21:38:05,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644209508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:05,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:05,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:38:05,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735193469] [2024-06-21 21:38:05,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:05,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:38:05,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:05,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:38:05,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:38:06,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:06,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 657 transitions, 11303 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:06,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:06,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:06,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:07,878 INFO L124 PetriNetUnfolderBase]: 4114/6473 cut-off events. [2024-06-21 21:38:07,878 INFO L125 PetriNetUnfolderBase]: For 750464/750464 co-relation queries the response was YES. [2024-06-21 21:38:07,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64939 conditions, 6473 events. 4114/6473 cut-off events. For 750464/750464 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39915 event pairs, 723 based on Foata normal form. 2/6473 useless extension candidates. Maximal degree in co-relation 64762. Up to 6097 conditions per place. [2024-06-21 21:38:07,979 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 630 selfloop transitions, 45 changer transitions 0/680 dead transitions. [2024-06-21 21:38:07,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 680 transitions, 12761 flow [2024-06-21 21:38:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:38:07,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:38:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-21 21:38:07,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-21 21:38:07,980 INFO L175 Difference]: Start difference. First operand has 384 places, 657 transitions, 11303 flow. Second operand 8 states and 147 transitions. [2024-06-21 21:38:07,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 680 transitions, 12761 flow [2024-06-21 21:38:11,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 680 transitions, 12626 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-21 21:38:11,286 INFO L231 Difference]: Finished difference. Result has 388 places, 659 transitions, 11315 flow [2024-06-21 21:38:11,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11184, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11315, PETRI_PLACES=388, PETRI_TRANSITIONS=659} [2024-06-21 21:38:11,288 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-21 21:38:11,288 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 659 transitions, 11315 flow [2024-06-21 21:38:11,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:11,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:11,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:11,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 21:38:11,289 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:11,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:11,289 INFO L85 PathProgramCache]: Analyzing trace with hash -754566967, now seen corresponding path program 3 times [2024-06-21 21:38:11,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:11,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708265313] [2024-06-21 21:38:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:11,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708265313] [2024-06-21 21:38:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708265313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:12,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:12,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:38:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373859366] [2024-06-21 21:38:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:38:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:38:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:38:12,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:12,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 659 transitions, 11315 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:12,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:12,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:12,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:13,949 INFO L124 PetriNetUnfolderBase]: 4109/6475 cut-off events. [2024-06-21 21:38:13,950 INFO L125 PetriNetUnfolderBase]: For 756469/756469 co-relation queries the response was YES. [2024-06-21 21:38:14,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64795 conditions, 6475 events. 4109/6475 cut-off events. For 756469/756469 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 40021 event pairs, 720 based on Foata normal form. 2/6475 useless extension candidates. Maximal degree in co-relation 64616. Up to 6090 conditions per place. [2024-06-21 21:38:14,051 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 628 selfloop transitions, 42 changer transitions 0/675 dead transitions. [2024-06-21 21:38:14,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 675 transitions, 12699 flow [2024-06-21 21:38:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:38:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:38:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-21 21:38:14,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-21 21:38:14,052 INFO L175 Difference]: Start difference. First operand has 388 places, 659 transitions, 11315 flow. Second operand 8 states and 142 transitions. [2024-06-21 21:38:14,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 675 transitions, 12699 flow [2024-06-21 21:38:16,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 675 transitions, 12568 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 21:38:16,712 INFO L231 Difference]: Finished difference. Result has 390 places, 659 transitions, 11273 flow [2024-06-21 21:38:16,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11184, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11273, PETRI_PLACES=390, PETRI_TRANSITIONS=659} [2024-06-21 21:38:16,714 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-06-21 21:38:16,714 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 659 transitions, 11273 flow [2024-06-21 21:38:16,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:16,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:16,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:16,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 21:38:16,715 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:16,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash 543227140, now seen corresponding path program 1 times [2024-06-21 21:38:16,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:16,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245859898] [2024-06-21 21:38:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:16,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:17,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:17,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245859898] [2024-06-21 21:38:17,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245859898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:17,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:17,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:38:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581165344] [2024-06-21 21:38:17,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:17,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:38:17,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:17,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:38:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:38:17,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:17,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 659 transitions, 11273 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) [2024-06-21 21:38:17,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:17,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:17,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:19,353 INFO L124 PetriNetUnfolderBase]: 4161/6548 cut-off events. [2024-06-21 21:38:19,353 INFO L125 PetriNetUnfolderBase]: For 798737/798737 co-relation queries the response was YES. [2024-06-21 21:38:19,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66018 conditions, 6548 events. 4161/6548 cut-off events. For 798737/798737 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 40529 event pairs, 725 based on Foata normal form. 4/6550 useless extension candidates. Maximal degree in co-relation 65838. Up to 5936 conditions per place. [2024-06-21 21:38:19,459 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 583 selfloop transitions, 114 changer transitions 0/702 dead transitions. [2024-06-21 21:38:19,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 702 transitions, 13383 flow [2024-06-21 21:38:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:38:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:38:19,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-21 21:38:19,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-21 21:38:19,460 INFO L175 Difference]: Start difference. First operand has 390 places, 659 transitions, 11273 flow. Second operand 9 states and 172 transitions. [2024-06-21 21:38:19,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 702 transitions, 13383 flow [2024-06-21 21:38:22,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 702 transitions, 13294 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 21:38:22,415 INFO L231 Difference]: Finished difference. Result has 393 places, 669 transitions, 11693 flow [2024-06-21 21:38:22,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11184, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11693, PETRI_PLACES=393, PETRI_TRANSITIONS=669} [2024-06-21 21:38:22,416 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 351 predicate places. [2024-06-21 21:38:22,416 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 669 transitions, 11693 flow [2024-06-21 21:38:22,416 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) [2024-06-21 21:38:22,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:22,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:22,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 21:38:22,417 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:22,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash 543226985, now seen corresponding path program 1 times [2024-06-21 21:38:22,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:22,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801078606] [2024-06-21 21:38:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:23,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:23,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801078606] [2024-06-21 21:38:23,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801078606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:23,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:23,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:38:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678353547] [2024-06-21 21:38:23,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:23,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:38:23,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:23,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:38:23,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:38:23,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:23,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 669 transitions, 11693 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) [2024-06-21 21:38:23,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:23,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:23,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:25,389 INFO L124 PetriNetUnfolderBase]: 4166/6561 cut-off events. [2024-06-21 21:38:25,389 INFO L125 PetriNetUnfolderBase]: For 800405/800405 co-relation queries the response was YES. [2024-06-21 21:38:25,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66496 conditions, 6561 events. 4166/6561 cut-off events. For 800405/800405 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 40651 event pairs, 737 based on Foata normal form. 1/6560 useless extension candidates. Maximal degree in co-relation 66315. Up to 6165 conditions per place. [2024-06-21 21:38:25,499 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 633 selfloop transitions, 57 changer transitions 0/695 dead transitions. [2024-06-21 21:38:25,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 695 transitions, 13245 flow [2024-06-21 21:38:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:38:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:38:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-21 21:38:25,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-21 21:38:25,500 INFO L175 Difference]: Start difference. First operand has 393 places, 669 transitions, 11693 flow. Second operand 9 states and 158 transitions. [2024-06-21 21:38:25,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 695 transitions, 13245 flow [2024-06-21 21:38:28,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 695 transitions, 12979 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-21 21:38:28,307 INFO L231 Difference]: Finished difference. Result has 399 places, 676 transitions, 11707 flow [2024-06-21 21:38:28,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11427, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11707, PETRI_PLACES=399, PETRI_TRANSITIONS=676} [2024-06-21 21:38:28,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 357 predicate places. [2024-06-21 21:38:28,308 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 676 transitions, 11707 flow [2024-06-21 21:38:28,308 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) [2024-06-21 21:38:28,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:28,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:28,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 21:38:28,308 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:28,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:28,309 INFO L85 PathProgramCache]: Analyzing trace with hash 543232720, now seen corresponding path program 2 times [2024-06-21 21:38:28,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:28,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608947477] [2024-06-21 21:38:28,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:28,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:29,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608947477] [2024-06-21 21:38:29,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608947477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:29,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:29,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:38:29,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324379854] [2024-06-21 21:38:29,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:29,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:38:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:38:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:38:29,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:29,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 676 transitions, 11707 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) [2024-06-21 21:38:29,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:29,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:29,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:31,005 INFO L124 PetriNetUnfolderBase]: 4154/6539 cut-off events. [2024-06-21 21:38:31,005 INFO L125 PetriNetUnfolderBase]: For 810483/810483 co-relation queries the response was YES. [2024-06-21 21:38:31,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66067 conditions, 6539 events. 4154/6539 cut-off events. For 810483/810483 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 40444 event pairs, 722 based on Foata normal form. 4/6541 useless extension candidates. Maximal degree in co-relation 65882. Up to 5967 conditions per place. [2024-06-21 21:38:31,113 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 587 selfloop transitions, 110 changer transitions 0/702 dead transitions. [2024-06-21 21:38:31,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 702 transitions, 13280 flow [2024-06-21 21:38:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:38:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:38:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-21 21:38:31,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-21 21:38:31,114 INFO L175 Difference]: Start difference. First operand has 399 places, 676 transitions, 11707 flow. Second operand 9 states and 168 transitions. [2024-06-21 21:38:31,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 702 transitions, 13280 flow [2024-06-21 21:38:34,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 702 transitions, 13033 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-21 21:38:34,100 INFO L231 Difference]: Finished difference. Result has 404 places, 676 transitions, 11689 flow [2024-06-21 21:38:34,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11460, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11689, PETRI_PLACES=404, PETRI_TRANSITIONS=676} [2024-06-21 21:38:34,101 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-06-21 21:38:34,101 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 676 transitions, 11689 flow [2024-06-21 21:38:34,101 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) [2024-06-21 21:38:34,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:34,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:34,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 21:38:34,102 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:34,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:34,102 INFO L85 PathProgramCache]: Analyzing trace with hash 209318386, now seen corresponding path program 3 times [2024-06-21 21:38:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:34,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174351725] [2024-06-21 21:38:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:34,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:34,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174351725] [2024-06-21 21:38:34,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174351725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:34,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:34,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:38:34,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255282605] [2024-06-21 21:38:34,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:34,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:38:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:34,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:38:34,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:38:34,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:34,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 676 transitions, 11689 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:34,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:34,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:34,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:36,705 INFO L124 PetriNetUnfolderBase]: 4174/6571 cut-off events. [2024-06-21 21:38:36,705 INFO L125 PetriNetUnfolderBase]: For 825284/825284 co-relation queries the response was YES. [2024-06-21 21:38:36,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66559 conditions, 6571 events. 4174/6571 cut-off events. For 825284/825284 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 40685 event pairs, 726 based on Foata normal form. 4/6573 useless extension candidates. Maximal degree in co-relation 66372. Up to 6139 conditions per place. [2024-06-21 21:38:36,816 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 632 selfloop transitions, 66 changer transitions 0/703 dead transitions. [2024-06-21 21:38:36,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 703 transitions, 13364 flow [2024-06-21 21:38:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:38:36,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:38:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-21 21:38:36,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 21:38:36,818 INFO L175 Difference]: Start difference. First operand has 404 places, 676 transitions, 11689 flow. Second operand 9 states and 164 transitions. [2024-06-21 21:38:36,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 703 transitions, 13364 flow [2024-06-21 21:38:40,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 703 transitions, 13125 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 21:38:40,451 INFO L231 Difference]: Finished difference. Result has 405 places, 681 transitions, 11737 flow [2024-06-21 21:38:40,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11450, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11737, PETRI_PLACES=405, PETRI_TRANSITIONS=681} [2024-06-21 21:38:40,451 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-21 21:38:40,452 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 681 transitions, 11737 flow [2024-06-21 21:38:40,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:40,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:40,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:40,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 21:38:40,452 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:40,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash 100652753, now seen corresponding path program 1 times [2024-06-21 21:38:40,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:40,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044860708] [2024-06-21 21:38:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:41,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:41,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044860708] [2024-06-21 21:38:41,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044860708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:41,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:41,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:38:41,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560078188] [2024-06-21 21:38:41,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:38:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:38:41,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:38:41,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:41,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 681 transitions, 11737 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) [2024-06-21 21:38:41,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:41,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:41,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:43,211 INFO L124 PetriNetUnfolderBase]: 4189/6595 cut-off events. [2024-06-21 21:38:43,211 INFO L125 PetriNetUnfolderBase]: For 837272/837272 co-relation queries the response was YES. [2024-06-21 21:38:43,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66873 conditions, 6595 events. 4189/6595 cut-off events. For 837272/837272 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 40852 event pairs, 718 based on Foata normal form. 3/6596 useless extension candidates. Maximal degree in co-relation 66685. Up to 6121 conditions per place. [2024-06-21 21:38:43,318 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 634 selfloop transitions, 67 changer transitions 0/706 dead transitions. [2024-06-21 21:38:43,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 706 transitions, 13374 flow [2024-06-21 21:38:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:38:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:38:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 21:38:43,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-21 21:38:43,320 INFO L175 Difference]: Start difference. First operand has 405 places, 681 transitions, 11737 flow. Second operand 8 states and 150 transitions. [2024-06-21 21:38:43,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 706 transitions, 13374 flow [2024-06-21 21:38:47,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 706 transitions, 13143 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-21 21:38:47,166 INFO L231 Difference]: Finished difference. Result has 406 places, 686 transitions, 11804 flow [2024-06-21 21:38:47,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11506, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11804, PETRI_PLACES=406, PETRI_TRANSITIONS=686} [2024-06-21 21:38:47,167 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-21 21:38:47,167 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 686 transitions, 11804 flow [2024-06-21 21:38:47,167 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) [2024-06-21 21:38:47,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:47,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:47,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 21:38:47,168 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:47,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash 429411646, now seen corresponding path program 4 times [2024-06-21 21:38:47,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:47,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771732355] [2024-06-21 21:38:47,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:47,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:47,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:47,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771732355] [2024-06-21 21:38:47,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771732355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:47,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:47,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:38:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676364007] [2024-06-21 21:38:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:47,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:38:47,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:38:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:38:47,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:47,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 686 transitions, 11804 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) [2024-06-21 21:38:47,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:47,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:47,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:49,755 INFO L124 PetriNetUnfolderBase]: 4209/6616 cut-off events. [2024-06-21 21:38:49,755 INFO L125 PetriNetUnfolderBase]: For 860825/860825 co-relation queries the response was YES. [2024-06-21 21:38:49,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67569 conditions, 6616 events. 4209/6616 cut-off events. For 860825/860825 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 40941 event pairs, 728 based on Foata normal form. 4/6618 useless extension candidates. Maximal degree in co-relation 67380. Up to 6230 conditions per place. [2024-06-21 21:38:49,864 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 657 selfloop transitions, 49 changer transitions 0/711 dead transitions. [2024-06-21 21:38:49,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 711 transitions, 13472 flow [2024-06-21 21:38:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:38:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:38:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-21 21:38:49,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-21 21:38:49,865 INFO L175 Difference]: Start difference. First operand has 406 places, 686 transitions, 11804 flow. Second operand 9 states and 160 transitions. [2024-06-21 21:38:49,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 711 transitions, 13472 flow [2024-06-21 21:38:53,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 711 transitions, 13245 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-21 21:38:53,776 INFO L231 Difference]: Finished difference. Result has 408 places, 691 transitions, 11840 flow [2024-06-21 21:38:53,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11577, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11840, PETRI_PLACES=408, PETRI_TRANSITIONS=691} [2024-06-21 21:38:53,777 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 366 predicate places. [2024-06-21 21:38:53,777 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 691 transitions, 11840 flow [2024-06-21 21:38:53,777 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) [2024-06-21 21:38:53,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:38:53,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:38:53,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 21:38:53,778 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:38:53,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:38:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1739336964, now seen corresponding path program 5 times [2024-06-21 21:38:53,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:38:53,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554497440] [2024-06-21 21:38:53,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:38:53,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:38:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:38:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:38:54,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:38:54,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554497440] [2024-06-21 21:38:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554497440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:38:54,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:38:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:38:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662954992] [2024-06-21 21:38:54,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:38:54,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:38:54,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:38:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:38:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:38:54,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:38:54,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 691 transitions, 11840 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:38:54,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:38:54,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:38:54,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:38:56,374 INFO L124 PetriNetUnfolderBase]: 4229/6648 cut-off events. [2024-06-21 21:38:56,374 INFO L125 PetriNetUnfolderBase]: For 862678/862678 co-relation queries the response was YES. [2024-06-21 21:38:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67760 conditions, 6648 events. 4229/6648 cut-off events. For 862678/862678 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 41266 event pairs, 721 based on Foata normal form. 4/6650 useless extension candidates. Maximal degree in co-relation 67571. Up to 6164 conditions per place. [2024-06-21 21:38:56,488 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 639 selfloop transitions, 75 changer transitions 0/719 dead transitions. [2024-06-21 21:38:56,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 719 transitions, 13584 flow [2024-06-21 21:38:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:38:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:38:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-21 21:38:56,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-21 21:38:56,489 INFO L175 Difference]: Start difference. First operand has 408 places, 691 transitions, 11840 flow. Second operand 9 states and 165 transitions. [2024-06-21 21:38:56,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 719 transitions, 13584 flow [2024-06-21 21:39:00,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 719 transitions, 13377 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-21 21:39:00,329 INFO L231 Difference]: Finished difference. Result has 410 places, 696 transitions, 11958 flow [2024-06-21 21:39:00,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11633, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11958, PETRI_PLACES=410, PETRI_TRANSITIONS=696} [2024-06-21 21:39:00,330 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-21 21:39:00,330 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 696 transitions, 11958 flow [2024-06-21 21:39:00,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:00,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:00,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:00,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 21:39:00,331 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:00,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:00,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1739336809, now seen corresponding path program 2 times [2024-06-21 21:39:00,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:00,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96308362] [2024-06-21 21:39:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:00,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:01,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:01,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96308362] [2024-06-21 21:39:01,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96308362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:01,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:01,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:39:01,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258130769] [2024-06-21 21:39:01,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:01,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:39:01,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:01,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:39:01,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:39:01,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:01,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 696 transitions, 11958 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:01,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:01,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:01,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:39:03,031 INFO L124 PetriNetUnfolderBase]: 4239/6658 cut-off events. [2024-06-21 21:39:03,031 INFO L125 PetriNetUnfolderBase]: For 868350/868350 co-relation queries the response was YES. [2024-06-21 21:39:03,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67994 conditions, 6658 events. 4239/6658 cut-off events. For 868350/868350 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 41176 event pairs, 732 based on Foata normal form. 2/6658 useless extension candidates. Maximal degree in co-relation 67804. Up to 6282 conditions per place. [2024-06-21 21:39:03,143 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 659 selfloop transitions, 55 changer transitions 0/719 dead transitions. [2024-06-21 21:39:03,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 719 transitions, 13578 flow [2024-06-21 21:39:03,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:39:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:39:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-21 21:39:03,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-21 21:39:03,145 INFO L175 Difference]: Start difference. First operand has 410 places, 696 transitions, 11958 flow. Second operand 9 states and 157 transitions. [2024-06-21 21:39:03,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 719 transitions, 13578 flow [2024-06-21 21:39:06,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 719 transitions, 13309 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-21 21:39:06,812 INFO L231 Difference]: Finished difference. Result has 412 places, 702 transitions, 11952 flow [2024-06-21 21:39:06,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11689, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11952, PETRI_PLACES=412, PETRI_TRANSITIONS=702} [2024-06-21 21:39:06,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-21 21:39:06,813 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 702 transitions, 11952 flow [2024-06-21 21:39:06,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:06,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:06,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:06,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 21:39:06,814 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:06,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash -705981653, now seen corresponding path program 4 times [2024-06-21 21:39:06,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:06,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317089813] [2024-06-21 21:39:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:07,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:07,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317089813] [2024-06-21 21:39:07,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317089813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:07,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:07,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:39:07,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130218235] [2024-06-21 21:39:07,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:07,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:39:07,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:07,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:39:07,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:39:07,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:07,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 702 transitions, 11952 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:07,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:07,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:07,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:39:09,431 INFO L124 PetriNetUnfolderBase]: 4234/6657 cut-off events. [2024-06-21 21:39:09,432 INFO L125 PetriNetUnfolderBase]: For 877442/877442 co-relation queries the response was YES. [2024-06-21 21:39:09,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67682 conditions, 6657 events. 4234/6657 cut-off events. For 877442/877442 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41265 event pairs, 728 based on Foata normal form. 3/6658 useless extension candidates. Maximal degree in co-relation 67491. Up to 6241 conditions per place. [2024-06-21 21:39:09,553 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 670 selfloop transitions, 54 changer transitions 0/729 dead transitions. [2024-06-21 21:39:09,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 729 transitions, 13566 flow [2024-06-21 21:39:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:39:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:39:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-21 21:39:09,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052264808362369 [2024-06-21 21:39:09,554 INFO L175 Difference]: Start difference. First operand has 412 places, 702 transitions, 11952 flow. Second operand 7 states and 145 transitions. [2024-06-21 21:39:09,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 729 transitions, 13566 flow [2024-06-21 21:39:13,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 729 transitions, 13344 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-21 21:39:13,296 INFO L231 Difference]: Finished difference. Result has 412 places, 705 transitions, 11950 flow [2024-06-21 21:39:13,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11730, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11950, PETRI_PLACES=412, PETRI_TRANSITIONS=705} [2024-06-21 21:39:13,297 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-21 21:39:13,297 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 705 transitions, 11950 flow [2024-06-21 21:39:13,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:13,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:13,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 21:39:13,298 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:13,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2027244439, now seen corresponding path program 3 times [2024-06-21 21:39:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:13,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760883667] [2024-06-21 21:39:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:14,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760883667] [2024-06-21 21:39:14,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760883667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:14,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:14,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:39:14,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336599359] [2024-06-21 21:39:14,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:14,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:39:14,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:14,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:39:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:39:14,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:14,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 705 transitions, 11950 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) [2024-06-21 21:39:14,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:14,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:14,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:39:16,170 INFO L124 PetriNetUnfolderBase]: 4231/6650 cut-off events. [2024-06-21 21:39:16,170 INFO L125 PetriNetUnfolderBase]: For 878761/878761 co-relation queries the response was YES. [2024-06-21 21:39:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67665 conditions, 6650 events. 4231/6650 cut-off events. For 878761/878761 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 41289 event pairs, 745 based on Foata normal form. 1/6644 useless extension candidates. Maximal degree in co-relation 67473. Up to 6142 conditions per place. [2024-06-21 21:39:16,287 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 633 selfloop transitions, 86 changer transitions 0/724 dead transitions. [2024-06-21 21:39:16,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 724 transitions, 13469 flow [2024-06-21 21:39:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:39:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:39:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-21 21:39:16,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-21 21:39:16,289 INFO L175 Difference]: Start difference. First operand has 412 places, 705 transitions, 11950 flow. Second operand 9 states and 160 transitions. [2024-06-21 21:39:16,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 724 transitions, 13469 flow [2024-06-21 21:39:20,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 724 transitions, 13265 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-21 21:39:20,393 INFO L231 Difference]: Finished difference. Result has 415 places, 707 transitions, 11957 flow [2024-06-21 21:39:20,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11746, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11957, PETRI_PLACES=415, PETRI_TRANSITIONS=707} [2024-06-21 21:39:20,394 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 373 predicate places. [2024-06-21 21:39:20,394 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 707 transitions, 11957 flow [2024-06-21 21:39:20,394 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) [2024-06-21 21:39:20,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:20,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:20,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 21:39:20,395 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:20,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -570218166, now seen corresponding path program 6 times [2024-06-21 21:39:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:20,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114074878] [2024-06-21 21:39:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:21,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:21,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114074878] [2024-06-21 21:39:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114074878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:21,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:21,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:39:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52308357] [2024-06-21 21:39:21,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:21,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:39:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:39:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:39:21,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:21,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 707 transitions, 11957 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:21,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:21,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:21,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:39:22,904 INFO L124 PetriNetUnfolderBase]: 4251/6685 cut-off events. [2024-06-21 21:39:22,905 INFO L125 PetriNetUnfolderBase]: For 909664/909664 co-relation queries the response was YES. [2024-06-21 21:39:22,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68153 conditions, 6685 events. 4251/6685 cut-off events. For 909664/909664 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 41473 event pairs, 630 based on Foata normal form. 4/6683 useless extension candidates. Maximal degree in co-relation 67961. Up to 5253 conditions per place. [2024-06-21 21:39:23,020 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 489 selfloop transitions, 251 changer transitions 1/746 dead transitions. [2024-06-21 21:39:23,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 746 transitions, 14519 flow [2024-06-21 21:39:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:39:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:39:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-21 21:39:23,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-21 21:39:23,021 INFO L175 Difference]: Start difference. First operand has 415 places, 707 transitions, 11957 flow. Second operand 9 states and 178 transitions. [2024-06-21 21:39:23,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 746 transitions, 14519 flow [2024-06-21 21:39:27,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 746 transitions, 14316 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-21 21:39:27,487 INFO L231 Difference]: Finished difference. Result has 419 places, 712 transitions, 12431 flow [2024-06-21 21:39:27,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11754, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12431, PETRI_PLACES=419, PETRI_TRANSITIONS=712} [2024-06-21 21:39:27,487 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-21 21:39:27,487 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 712 transitions, 12431 flow [2024-06-21 21:39:27,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:27,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:27,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:27,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 21:39:27,488 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:27,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash -794792104, now seen corresponding path program 7 times [2024-06-21 21:39:27,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:27,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087492495] [2024-06-21 21:39:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:28,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:28,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087492495] [2024-06-21 21:39:28,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087492495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:28,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:28,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:39:28,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469861019] [2024-06-21 21:39:28,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:28,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:39:28,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:28,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:39:28,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:39:28,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:28,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 712 transitions, 12431 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:28,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:28,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:28,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:39:30,024 INFO L124 PetriNetUnfolderBase]: 4239/6675 cut-off events. [2024-06-21 21:39:30,025 INFO L125 PetriNetUnfolderBase]: For 908540/908540 co-relation queries the response was YES. [2024-06-21 21:39:30,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68199 conditions, 6675 events. 4239/6675 cut-off events. For 908540/908540 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 41510 event pairs, 624 based on Foata normal form. 4/6673 useless extension candidates. Maximal degree in co-relation 68008. Up to 5245 conditions per place. [2024-06-21 21:39:30,145 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 486 selfloop transitions, 251 changer transitions 1/743 dead transitions. [2024-06-21 21:39:30,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 743 transitions, 14590 flow [2024-06-21 21:39:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:39:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:39:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-21 21:39:30,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-21 21:39:30,146 INFO L175 Difference]: Start difference. First operand has 419 places, 712 transitions, 12431 flow. Second operand 9 states and 175 transitions. [2024-06-21 21:39:30,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 743 transitions, 14590 flow [2024-06-21 21:39:34,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 743 transitions, 13471 flow, removed 132 selfloop flow, removed 10 redundant places. [2024-06-21 21:39:34,567 INFO L231 Difference]: Finished difference. Result has 418 places, 712 transitions, 11823 flow [2024-06-21 21:39:34,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11312, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11823, PETRI_PLACES=418, PETRI_TRANSITIONS=712} [2024-06-21 21:39:34,568 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-21 21:39:34,568 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 712 transitions, 11823 flow [2024-06-21 21:39:34,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:34,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:34,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:34,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 21:39:34,569 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:34,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1084659845, now seen corresponding path program 4 times [2024-06-21 21:39:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910328333] [2024-06-21 21:39:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910328333] [2024-06-21 21:39:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910328333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:35,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:35,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:39:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017735958] [2024-06-21 21:39:35,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:35,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:39:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:39:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:39:35,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:35,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 712 transitions, 11823 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:35,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:35,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:35,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:39:37,007 INFO L124 PetriNetUnfolderBase]: 4252/6686 cut-off events. [2024-06-21 21:39:37,007 INFO L125 PetriNetUnfolderBase]: For 909413/909413 co-relation queries the response was YES. [2024-06-21 21:39:37,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67305 conditions, 6686 events. 4252/6686 cut-off events. For 909413/909413 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 41484 event pairs, 740 based on Foata normal form. 1/6681 useless extension candidates. Maximal degree in co-relation 67116. Up to 6153 conditions per place. [2024-06-21 21:39:37,123 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 642 selfloop transitions, 91 changer transitions 0/738 dead transitions. [2024-06-21 21:39:37,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 738 transitions, 13719 flow [2024-06-21 21:39:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:39:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:39:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-21 21:39:37,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-21 21:39:37,124 INFO L175 Difference]: Start difference. First operand has 418 places, 712 transitions, 11823 flow. Second operand 8 states and 150 transitions. [2024-06-21 21:39:37,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 738 transitions, 13719 flow [2024-06-21 21:39:41,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 738 transitions, 13202 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 21:39:41,392 INFO L231 Difference]: Finished difference. Result has 418 places, 718 transitions, 11668 flow [2024-06-21 21:39:41,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11306, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11668, PETRI_PLACES=418, PETRI_TRANSITIONS=718} [2024-06-21 21:39:41,392 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-21 21:39:41,392 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 718 transitions, 11668 flow [2024-06-21 21:39:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:41,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:41,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:41,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 21:39:41,393 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:41,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:41,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1625585005, now seen corresponding path program 5 times [2024-06-21 21:39:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:41,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264838295] [2024-06-21 21:39:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:42,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:42,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264838295] [2024-06-21 21:39:42,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264838295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:42,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:42,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:39:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275986108] [2024-06-21 21:39:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:42,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:39:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:39:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:39:42,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:42,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 718 transitions, 11668 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:42,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:42,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:42,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:39:44,124 INFO L124 PetriNetUnfolderBase]: 4257/6691 cut-off events. [2024-06-21 21:39:44,125 INFO L125 PetriNetUnfolderBase]: For 926439/926439 co-relation queries the response was YES. [2024-06-21 21:39:44,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67239 conditions, 6691 events. 4257/6691 cut-off events. For 926439/926439 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 41573 event pairs, 748 based on Foata normal form. 1/6686 useless extension candidates. Maximal degree in co-relation 67049. Up to 6179 conditions per place. [2024-06-21 21:39:44,245 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 646 selfloop transitions, 86 changer transitions 0/737 dead transitions. [2024-06-21 21:39:44,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 737 transitions, 13268 flow [2024-06-21 21:39:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:39:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:39:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-21 21:39:44,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-21 21:39:44,247 INFO L175 Difference]: Start difference. First operand has 418 places, 718 transitions, 11668 flow. Second operand 8 states and 146 transitions. [2024-06-21 21:39:44,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 737 transitions, 13268 flow [2024-06-21 21:39:49,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 737 transitions, 13019 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-21 21:39:49,268 INFO L231 Difference]: Finished difference. Result has 422 places, 721 transitions, 11693 flow [2024-06-21 21:39:49,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11453, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11693, PETRI_PLACES=422, PETRI_TRANSITIONS=721} [2024-06-21 21:39:49,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-06-21 21:39:49,269 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 721 transitions, 11693 flow [2024-06-21 21:39:49,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:49,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:49,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:49,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 21:39:49,270 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:49,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:49,270 INFO L85 PathProgramCache]: Analyzing trace with hash 61032479, now seen corresponding path program 6 times [2024-06-21 21:39:49,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:49,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408520119] [2024-06-21 21:39:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:49,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:50,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:50,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408520119] [2024-06-21 21:39:50,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408520119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:50,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:50,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:39:50,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465557938] [2024-06-21 21:39:50,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:50,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:39:50,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:39:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:39:50,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:50,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 721 transitions, 11693 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:50,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:50,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:50,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:39:52,009 INFO L124 PetriNetUnfolderBase]: 4275/6714 cut-off events. [2024-06-21 21:39:52,009 INFO L125 PetriNetUnfolderBase]: For 954110/954110 co-relation queries the response was YES. [2024-06-21 21:39:52,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67931 conditions, 6714 events. 4275/6714 cut-off events. For 954110/954110 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 41741 event pairs, 746 based on Foata normal form. 2/6710 useless extension candidates. Maximal degree in co-relation 67739. Up to 5888 conditions per place. [2024-06-21 21:39:52,150 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 551 selfloop transitions, 199 changer transitions 0/755 dead transitions. [2024-06-21 21:39:52,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 755 transitions, 13951 flow [2024-06-21 21:39:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:39:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:39:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-21 21:39:52,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-21 21:39:52,151 INFO L175 Difference]: Start difference. First operand has 422 places, 721 transitions, 11693 flow. Second operand 10 states and 191 transitions. [2024-06-21 21:39:52,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 755 transitions, 13951 flow [2024-06-21 21:39:57,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 755 transitions, 13739 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 21:39:57,272 INFO L231 Difference]: Finished difference. Result has 426 places, 729 transitions, 12172 flow [2024-06-21 21:39:57,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11481, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12172, PETRI_PLACES=426, PETRI_TRANSITIONS=729} [2024-06-21 21:39:57,272 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2024-06-21 21:39:57,272 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 729 transitions, 12172 flow [2024-06-21 21:39:57,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:57,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:39:57,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:39:57,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 21:39:57,273 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:39:57,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:39:57,273 INFO L85 PathProgramCache]: Analyzing trace with hash -568560459, now seen corresponding path program 7 times [2024-06-21 21:39:57,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:39:57,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820639578] [2024-06-21 21:39:57,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:39:57,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:39:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:39:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:39:58,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:39:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820639578] [2024-06-21 21:39:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820639578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:39:58,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:39:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:39:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855930453] [2024-06-21 21:39:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:39:58,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:39:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:39:58,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:39:58,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:39:58,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:39:58,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 729 transitions, 12172 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:39:58,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:39:58,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:39:58,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:40:00,157 INFO L124 PetriNetUnfolderBase]: 4290/6741 cut-off events. [2024-06-21 21:40:00,157 INFO L125 PetriNetUnfolderBase]: For 984746/984746 co-relation queries the response was YES. [2024-06-21 21:40:00,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69172 conditions, 6741 events. 4290/6741 cut-off events. For 984746/984746 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 41952 event pairs, 744 based on Foata normal form. 3/6738 useless extension candidates. Maximal degree in co-relation 68979. Up to 5965 conditions per place. [2024-06-21 21:40:00,282 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 549 selfloop transitions, 205 changer transitions 0/759 dead transitions. [2024-06-21 21:40:00,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 759 transitions, 14164 flow [2024-06-21 21:40:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:40:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:40:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-21 21:40:00,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-06-21 21:40:00,283 INFO L175 Difference]: Start difference. First operand has 426 places, 729 transitions, 12172 flow. Second operand 12 states and 214 transitions. [2024-06-21 21:40:00,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 759 transitions, 14164 flow [2024-06-21 21:40:05,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 759 transitions, 13740 flow, removed 119 selfloop flow, removed 6 redundant places. [2024-06-21 21:40:05,013 INFO L231 Difference]: Finished difference. Result has 432 places, 736 transitions, 12397 flow [2024-06-21 21:40:05,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11804, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12397, PETRI_PLACES=432, PETRI_TRANSITIONS=736} [2024-06-21 21:40:05,014 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-21 21:40:05,014 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 736 transitions, 12397 flow [2024-06-21 21:40:05,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:40:05,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:40:05,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:40:05,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 21:40:05,015 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:40:05,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:40:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1468980640, now seen corresponding path program 8 times [2024-06-21 21:40:05,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:40:05,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452788844] [2024-06-21 21:40:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:40:05,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:40:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:40:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:40:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:40:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452788844] [2024-06-21 21:40:05,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452788844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:40:05,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:40:05,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:40:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650609366] [2024-06-21 21:40:05,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:40:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:40:05,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:40:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:40:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:40:05,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:40:05,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 736 transitions, 12397 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) [2024-06-21 21:40:05,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:40:05,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:40:05,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:40:07,827 INFO L124 PetriNetUnfolderBase]: 4310/6764 cut-off events. [2024-06-21 21:40:07,827 INFO L125 PetriNetUnfolderBase]: For 986814/986814 co-relation queries the response was YES. [2024-06-21 21:40:07,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69325 conditions, 6764 events. 4310/6764 cut-off events. For 986814/986814 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 42047 event pairs, 631 based on Foata normal form. 4/6762 useless extension candidates. Maximal degree in co-relation 69131. Up to 5332 conditions per place. [2024-06-21 21:40:07,946 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 473 selfloop transitions, 290 changer transitions 1/769 dead transitions. [2024-06-21 21:40:07,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 769 transitions, 14675 flow [2024-06-21 21:40:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:40:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:40:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-21 21:40:07,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-21 21:40:07,947 INFO L175 Difference]: Start difference. First operand has 432 places, 736 transitions, 12397 flow. Second operand 10 states and 187 transitions. [2024-06-21 21:40:07,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 769 transitions, 14675 flow [2024-06-21 21:40:12,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 769 transitions, 14160 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-06-21 21:40:12,536 INFO L231 Difference]: Finished difference. Result has 432 places, 741 transitions, 12601 flow [2024-06-21 21:40:12,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11882, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12601, PETRI_PLACES=432, PETRI_TRANSITIONS=741} [2024-06-21 21:40:12,536 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-21 21:40:12,536 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 741 transitions, 12601 flow [2024-06-21 21:40:12,537 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) [2024-06-21 21:40:12,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:40:12,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:40:12,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 21:40:12,537 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:40:12,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:40:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1095849760, now seen corresponding path program 9 times [2024-06-21 21:40:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:40:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456904924] [2024-06-21 21:40:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:40:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:40:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:40:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:40:13,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:40:13,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456904924] [2024-06-21 21:40:13,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456904924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:40:13,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:40:13,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:40:13,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373572965] [2024-06-21 21:40:13,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:40:13,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:40:13,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:40:13,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:40:13,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:40:13,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:40:13,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 741 transitions, 12601 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:40:13,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:40:13,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:40:13,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:40:15,294 INFO L124 PetriNetUnfolderBase]: 4298/6746 cut-off events. [2024-06-21 21:40:15,295 INFO L125 PetriNetUnfolderBase]: For 981998/981998 co-relation queries the response was YES. [2024-06-21 21:40:15,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69202 conditions, 6746 events. 4298/6746 cut-off events. For 981998/981998 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41935 event pairs, 627 based on Foata normal form. 4/6744 useless extension candidates. Maximal degree in co-relation 69007. Up to 5324 conditions per place. [2024-06-21 21:40:15,402 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 477 selfloop transitions, 288 changer transitions 1/771 dead transitions. [2024-06-21 21:40:15,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 771 transitions, 14789 flow [2024-06-21 21:40:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:40:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:40:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-21 21:40:15,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-21 21:40:15,403 INFO L175 Difference]: Start difference. First operand has 432 places, 741 transitions, 12601 flow. Second operand 9 states and 177 transitions. [2024-06-21 21:40:15,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 771 transitions, 14789 flow [2024-06-21 21:40:20,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 771 transitions, 14287 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-21 21:40:20,722 INFO L231 Difference]: Finished difference. Result has 434 places, 741 transitions, 12684 flow [2024-06-21 21:40:20,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12099, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12684, PETRI_PLACES=434, PETRI_TRANSITIONS=741} [2024-06-21 21:40:20,722 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-06-21 21:40:20,722 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 741 transitions, 12684 flow [2024-06-21 21:40:20,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:40:20,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:40:20,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:40:20,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 21:40:20,723 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:40:20,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:40:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash 748039614, now seen corresponding path program 10 times [2024-06-21 21:40:20,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:40:20,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339868624] [2024-06-21 21:40:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:40:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:40:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:40:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:40:21,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:40:21,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339868624] [2024-06-21 21:40:21,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339868624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:40:21,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:40:21,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:40:21,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916405691] [2024-06-21 21:40:21,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:40:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:40:21,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:40:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:40:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:40:21,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:40:21,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 741 transitions, 12684 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) [2024-06-21 21:40:21,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:40:21,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:40:21,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:40:23,704 INFO L124 PetriNetUnfolderBase]: 4286/6743 cut-off events. [2024-06-21 21:40:23,705 INFO L125 PetriNetUnfolderBase]: For 978620/978620 co-relation queries the response was YES. [2024-06-21 21:40:23,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68694 conditions, 6743 events. 4286/6743 cut-off events. For 978620/978620 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 42063 event pairs, 660 based on Foata normal form. 4/6745 useless extension candidates. Maximal degree in co-relation 68498. Up to 6219 conditions per place. [2024-06-21 21:40:23,814 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 690 selfloop transitions, 69 changer transitions 0/764 dead transitions. [2024-06-21 21:40:23,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 764 transitions, 14518 flow [2024-06-21 21:40:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:40:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:40:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-21 21:40:23,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44878048780487806 [2024-06-21 21:40:23,816 INFO L175 Difference]: Start difference. First operand has 434 places, 741 transitions, 12684 flow. Second operand 10 states and 184 transitions. [2024-06-21 21:40:23,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 764 transitions, 14518 flow [2024-06-21 21:40:28,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 764 transitions, 13422 flow, removed 76 selfloop flow, removed 11 redundant places. [2024-06-21 21:40:28,467 INFO L231 Difference]: Finished difference. Result has 433 places, 741 transitions, 11742 flow [2024-06-21 21:40:28,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11596, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11742, PETRI_PLACES=433, PETRI_TRANSITIONS=741} [2024-06-21 21:40:28,468 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-21 21:40:28,468 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 741 transitions, 11742 flow [2024-06-21 21:40:28,468 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) [2024-06-21 21:40:28,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:40:28,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:40:28,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 21:40:28,468 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:40:28,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:40:28,469 INFO L85 PathProgramCache]: Analyzing trace with hash 747593989, now seen corresponding path program 8 times [2024-06-21 21:40:28,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:40:28,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11177826] [2024-06-21 21:40:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:40:28,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:40:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:40:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:40:29,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:40:29,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11177826] [2024-06-21 21:40:29,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11177826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:40:29,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:40:29,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:40:29,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629325076] [2024-06-21 21:40:29,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:40:29,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:40:29,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:40:29,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:40:29,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:40:29,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:40:29,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 741 transitions, 11742 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:40:29,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:40:29,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:40:29,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:40:31,308 INFO L124 PetriNetUnfolderBase]: 4316/6787 cut-off events. [2024-06-21 21:40:31,308 INFO L125 PetriNetUnfolderBase]: For 997536/997536 co-relation queries the response was YES. [2024-06-21 21:40:31,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67887 conditions, 6787 events. 4316/6787 cut-off events. For 997536/997536 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 42284 event pairs, 684 based on Foata normal form. 6/6791 useless extension candidates. Maximal degree in co-relation 67692. Up to 6337 conditions per place. [2024-06-21 21:40:31,432 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 707 selfloop transitions, 58 changer transitions 0/770 dead transitions. [2024-06-21 21:40:31,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 770 transitions, 13628 flow [2024-06-21 21:40:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:40:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:40:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-21 21:40:31,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-21 21:40:31,434 INFO L175 Difference]: Start difference. First operand has 433 places, 741 transitions, 11742 flow. Second operand 9 states and 167 transitions. [2024-06-21 21:40:31,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 770 transitions, 13628 flow [2024-06-21 21:40:36,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 770 transitions, 13453 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 21:40:36,758 INFO L231 Difference]: Finished difference. Result has 433 places, 751 transitions, 12007 flow [2024-06-21 21:40:36,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11567, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12007, PETRI_PLACES=433, PETRI_TRANSITIONS=751} [2024-06-21 21:40:36,758 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-21 21:40:36,759 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 751 transitions, 12007 flow [2024-06-21 21:40:36,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:40:36,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:40:36,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:40:36,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 21:40:36,759 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:40:36,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:40:36,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1280160464, now seen corresponding path program 11 times [2024-06-21 21:40:36,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:40:36,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54636933] [2024-06-21 21:40:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:40:36,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:40:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:40:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:40:37,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:40:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54636933] [2024-06-21 21:40:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54636933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:40:37,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:40:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:40:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619781952] [2024-06-21 21:40:37,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:40:37,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:40:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:40:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:40:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:40:37,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:40:37,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 751 transitions, 12007 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) [2024-06-21 21:40:37,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:40:37,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:40:37,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:40:39,537 INFO L124 PetriNetUnfolderBase]: 4304/6765 cut-off events. [2024-06-21 21:40:39,538 INFO L125 PetriNetUnfolderBase]: For 985471/985471 co-relation queries the response was YES. [2024-06-21 21:40:39,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67943 conditions, 6765 events. 4304/6765 cut-off events. For 985471/985471 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 42129 event pairs, 658 based on Foata normal form. 4/6767 useless extension candidates. Maximal degree in co-relation 67747. Up to 6253 conditions per place. [2024-06-21 21:40:39,657 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 699 selfloop transitions, 69 changer transitions 0/773 dead transitions. [2024-06-21 21:40:39,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 773 transitions, 13635 flow [2024-06-21 21:40:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:40:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:40:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-21 21:40:39,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44634146341463415 [2024-06-21 21:40:39,658 INFO L175 Difference]: Start difference. First operand has 433 places, 751 transitions, 12007 flow. Second operand 10 states and 183 transitions. [2024-06-21 21:40:39,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 773 transitions, 13635 flow [2024-06-21 21:40:45,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 773 transitions, 13251 flow, removed 141 selfloop flow, removed 7 redundant places. [2024-06-21 21:40:45,108 INFO L231 Difference]: Finished difference. Result has 436 places, 751 transitions, 11770 flow [2024-06-21 21:40:45,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11623, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11770, PETRI_PLACES=436, PETRI_TRANSITIONS=751} [2024-06-21 21:40:45,109 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-21 21:40:45,109 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 751 transitions, 11770 flow [2024-06-21 21:40:45,109 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) [2024-06-21 21:40:45,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:40:45,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:40:45,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 21:40:45,110 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:40:45,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:40:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1288725609, now seen corresponding path program 9 times [2024-06-21 21:40:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:40:45,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014815254] [2024-06-21 21:40:45,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:40:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:40:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:40:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:40:45,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:40:45,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014815254] [2024-06-21 21:40:45,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014815254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:40:45,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:40:45,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:40:45,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684183250] [2024-06-21 21:40:45,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:40:45,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:40:45,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:40:45,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:40:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:40:45,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:40:45,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 751 transitions, 11770 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:40:45,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:40:45,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:40:45,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:40:47,793 INFO L124 PetriNetUnfolderBase]: 4319/6800 cut-off events. [2024-06-21 21:40:47,793 INFO L125 PetriNetUnfolderBase]: For 992770/992770 co-relation queries the response was YES. [2024-06-21 21:40:47,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67952 conditions, 6800 events. 4319/6800 cut-off events. For 992770/992770 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42480 event pairs, 677 based on Foata normal form. 3/6801 useless extension candidates. Maximal degree in co-relation 67755. Up to 6341 conditions per place. [2024-06-21 21:40:47,919 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 711 selfloop transitions, 62 changer transitions 0/778 dead transitions. [2024-06-21 21:40:47,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 778 transitions, 13566 flow [2024-06-21 21:40:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:40:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:40:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-21 21:40:47,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-21 21:40:47,921 INFO L175 Difference]: Start difference. First operand has 436 places, 751 transitions, 11770 flow. Second operand 9 states and 166 transitions. [2024-06-21 21:40:47,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 778 transitions, 13566 flow [2024-06-21 21:40:53,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 778 transitions, 13362 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-21 21:40:53,787 INFO L231 Difference]: Finished difference. Result has 436 places, 759 transitions, 11916 flow [2024-06-21 21:40:53,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11566, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11916, PETRI_PLACES=436, PETRI_TRANSITIONS=759} [2024-06-21 21:40:53,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-21 21:40:53,788 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 759 transitions, 11916 flow [2024-06-21 21:40:53,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:40:53,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:40:53,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:40:53,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 21:40:53,789 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:40:53,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:40:53,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1410081970, now seen corresponding path program 12 times [2024-06-21 21:40:53,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:40:53,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756634516] [2024-06-21 21:40:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:40:53,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:40:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:40:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:40:54,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:40:54,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756634516] [2024-06-21 21:40:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756634516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:40:54,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:40:54,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:40:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803970196] [2024-06-21 21:40:54,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:40:54,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:40:54,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:40:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:40:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:40:54,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:40:54,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 759 transitions, 11916 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) [2024-06-21 21:40:54,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:40:54,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:40:54,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:40:56,632 INFO L124 PetriNetUnfolderBase]: 4339/6822 cut-off events. [2024-06-21 21:40:56,632 INFO L125 PetriNetUnfolderBase]: For 1018883/1018883 co-relation queries the response was YES. [2024-06-21 21:40:56,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68623 conditions, 6822 events. 4339/6822 cut-off events. For 1018883/1018883 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 42552 event pairs, 684 based on Foata normal form. 4/6824 useless extension candidates. Maximal degree in co-relation 68425. Up to 5966 conditions per place. [2024-06-21 21:40:56,758 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 664 selfloop transitions, 130 changer transitions 1/800 dead transitions. [2024-06-21 21:40:56,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 800 transitions, 14356 flow [2024-06-21 21:40:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:40:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:40:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-21 21:40:56,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-21 21:40:56,759 INFO L175 Difference]: Start difference. First operand has 436 places, 759 transitions, 11916 flow. Second operand 9 states and 180 transitions. [2024-06-21 21:40:56,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 800 transitions, 14356 flow [2024-06-21 21:41:02,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 800 transitions, 14112 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-21 21:41:02,811 INFO L231 Difference]: Finished difference. Result has 439 places, 764 transitions, 12052 flow [2024-06-21 21:41:02,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11672, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12052, PETRI_PLACES=439, PETRI_TRANSITIONS=764} [2024-06-21 21:41:02,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-21 21:41:02,812 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 764 transitions, 12052 flow [2024-06-21 21:41:02,812 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) [2024-06-21 21:41:02,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:41:02,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:41:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 21:41:02,813 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:41:02,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:41:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash -701207374, now seen corresponding path program 13 times [2024-06-21 21:41:02,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:41:02,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964387419] [2024-06-21 21:41:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:41:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:41:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:41:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:41:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:41:03,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964387419] [2024-06-21 21:41:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964387419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:41:03,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:41:03,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:41:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093970458] [2024-06-21 21:41:03,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:41:03,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:41:03,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:41:03,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:41:03,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:41:03,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:41:03,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 764 transitions, 12052 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:03,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:41:03,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:41:03,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:41:05,491 INFO L124 PetriNetUnfolderBase]: 4359/6847 cut-off events. [2024-06-21 21:41:05,491 INFO L125 PetriNetUnfolderBase]: For 1035916/1035916 co-relation queries the response was YES. [2024-06-21 21:41:05,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69202 conditions, 6847 events. 4359/6847 cut-off events. For 1035916/1035916 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42665 event pairs, 718 based on Foata normal form. 4/6849 useless extension candidates. Maximal degree in co-relation 69003. Up to 6377 conditions per place. [2024-06-21 21:41:05,615 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 723 selfloop transitions, 66 changer transitions 0/794 dead transitions. [2024-06-21 21:41:05,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 794 transitions, 13928 flow [2024-06-21 21:41:05,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:41:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:41:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-21 21:41:05,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-21 21:41:05,617 INFO L175 Difference]: Start difference. First operand has 439 places, 764 transitions, 12052 flow. Second operand 8 states and 153 transitions. [2024-06-21 21:41:05,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 794 transitions, 13928 flow [2024-06-21 21:41:11,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 794 transitions, 13669 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-21 21:41:11,791 INFO L231 Difference]: Finished difference. Result has 441 places, 769 transitions, 12065 flow [2024-06-21 21:41:11,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11798, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12065, PETRI_PLACES=441, PETRI_TRANSITIONS=769} [2024-06-21 21:41:11,792 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-21 21:41:11,792 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 769 transitions, 12065 flow [2024-06-21 21:41:11,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:11,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:41:11,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:41:11,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 21:41:11,793 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:41:11,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:41:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash -693855724, now seen corresponding path program 14 times [2024-06-21 21:41:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:41:11,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997792814] [2024-06-21 21:41:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:41:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:41:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:41:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:41:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:41:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997792814] [2024-06-21 21:41:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997792814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:41:12,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:41:12,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:41:12,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5809007] [2024-06-21 21:41:12,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:41:12,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:41:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:41:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:41:12,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:41:12,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:41:12,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 769 transitions, 12065 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) [2024-06-21 21:41:12,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:41:12,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:41:12,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:41:14,405 INFO L124 PetriNetUnfolderBase]: 4347/6834 cut-off events. [2024-06-21 21:41:14,405 INFO L125 PetriNetUnfolderBase]: For 1027551/1027551 co-relation queries the response was YES. [2024-06-21 21:41:14,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68403 conditions, 6834 events. 4347/6834 cut-off events. For 1027551/1027551 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42642 event pairs, 752 based on Foata normal form. 4/6836 useless extension candidates. Maximal degree in co-relation 68203. Up to 6465 conditions per place. [2024-06-21 21:41:14,538 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 748 selfloop transitions, 31 changer transitions 0/784 dead transitions. [2024-06-21 21:41:14,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 784 transitions, 13717 flow [2024-06-21 21:41:14,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:41:14,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:41:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-21 21:41:14,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975609756097561 [2024-06-21 21:41:14,539 INFO L175 Difference]: Start difference. First operand has 441 places, 769 transitions, 12065 flow. Second operand 10 states and 163 transitions. [2024-06-21 21:41:14,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 784 transitions, 13717 flow [2024-06-21 21:41:20,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 784 transitions, 13482 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-21 21:41:20,398 INFO L231 Difference]: Finished difference. Result has 445 places, 769 transitions, 11901 flow [2024-06-21 21:41:20,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11830, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=738, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11901, PETRI_PLACES=445, PETRI_TRANSITIONS=769} [2024-06-21 21:41:20,399 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-21 21:41:20,399 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 769 transitions, 11901 flow [2024-06-21 21:41:20,399 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) [2024-06-21 21:41:20,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:41:20,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:41:20,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 21:41:20,400 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:41:20,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:41:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -301265525, now seen corresponding path program 10 times [2024-06-21 21:41:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:41:20,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022522621] [2024-06-21 21:41:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:41:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:41:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:41:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:41:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:41:21,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022522621] [2024-06-21 21:41:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022522621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:41:21,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:41:21,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:41:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102611383] [2024-06-21 21:41:21,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:41:21,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:41:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:41:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:41:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:41:21,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:41:21,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 769 transitions, 11901 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:21,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:41:21,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:41:21,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:41:23,155 INFO L124 PetriNetUnfolderBase]: 4361/6856 cut-off events. [2024-06-21 21:41:23,156 INFO L125 PetriNetUnfolderBase]: For 1043135/1043135 co-relation queries the response was YES. [2024-06-21 21:41:23,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68368 conditions, 6856 events. 4361/6856 cut-off events. For 1043135/1043135 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42719 event pairs, 722 based on Foata normal form. 6/6860 useless extension candidates. Maximal degree in co-relation 68167. Up to 6191 conditions per place. [2024-06-21 21:41:23,278 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 699 selfloop transitions, 100 changer transitions 1/805 dead transitions. [2024-06-21 21:41:23,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 805 transitions, 13867 flow [2024-06-21 21:41:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:41:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:41:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-21 21:41:23,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060975609756098 [2024-06-21 21:41:23,279 INFO L175 Difference]: Start difference. First operand has 445 places, 769 transitions, 11901 flow. Second operand 8 states and 166 transitions. [2024-06-21 21:41:23,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 805 transitions, 13867 flow [2024-06-21 21:41:28,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 805 transitions, 13720 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-21 21:41:28,992 INFO L231 Difference]: Finished difference. Result has 445 places, 775 transitions, 12198 flow [2024-06-21 21:41:28,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11754, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12198, PETRI_PLACES=445, PETRI_TRANSITIONS=775} [2024-06-21 21:41:28,992 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-21 21:41:28,993 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 775 transitions, 12198 flow [2024-06-21 21:41:28,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:28,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:41:28,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:41:28,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 21:41:28,993 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:41:28,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:41:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1418796070, now seen corresponding path program 15 times [2024-06-21 21:41:28,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:41:28,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012399378] [2024-06-21 21:41:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:41:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:41:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:41:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:41:29,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:41:29,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012399378] [2024-06-21 21:41:29,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012399378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:41:29,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:41:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:41:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007300904] [2024-06-21 21:41:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:41:29,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:41:29,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:41:29,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:41:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:41:29,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:41:29,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 775 transitions, 12198 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:29,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:41:29,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:41:29,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:41:31,784 INFO L124 PetriNetUnfolderBase]: 4349/6833 cut-off events. [2024-06-21 21:41:31,785 INFO L125 PetriNetUnfolderBase]: For 1029276/1029276 co-relation queries the response was YES. [2024-06-21 21:41:31,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68616 conditions, 6833 events. 4349/6833 cut-off events. For 1029276/1029276 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42632 event pairs, 704 based on Foata normal form. 4/6835 useless extension candidates. Maximal degree in co-relation 68414. Up to 6161 conditions per place. [2024-06-21 21:41:32,105 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 683 selfloop transitions, 108 changer transitions 1/797 dead transitions. [2024-06-21 21:41:32,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 797 transitions, 13986 flow [2024-06-21 21:41:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:41:32,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:41:32,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-21 21:41:32,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-21 21:41:32,107 INFO L175 Difference]: Start difference. First operand has 445 places, 775 transitions, 12198 flow. Second operand 11 states and 187 transitions. [2024-06-21 21:41:32,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 797 transitions, 13986 flow [2024-06-21 21:41:37,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 797 transitions, 13562 flow, removed 123 selfloop flow, removed 6 redundant places. [2024-06-21 21:41:37,266 INFO L231 Difference]: Finished difference. Result has 450 places, 775 transitions, 11998 flow [2024-06-21 21:41:37,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11774, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11998, PETRI_PLACES=450, PETRI_TRANSITIONS=775} [2024-06-21 21:41:37,267 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-21 21:41:37,267 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 775 transitions, 11998 flow [2024-06-21 21:41:37,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:37,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:41:37,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:41:37,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 21:41:37,268 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:41:37,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:41:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1881762729, now seen corresponding path program 2 times [2024-06-21 21:41:37,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:41:37,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192639190] [2024-06-21 21:41:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:41:37,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:41:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:41:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:41:38,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:41:38,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192639190] [2024-06-21 21:41:38,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192639190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:41:38,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:41:38,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:41:38,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388930966] [2024-06-21 21:41:38,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:41:38,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:41:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:41:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:41:38,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:41:38,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:41:38,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 775 transitions, 11998 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) [2024-06-21 21:41:38,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:41:38,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:41:38,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:41:40,149 INFO L124 PetriNetUnfolderBase]: 4356/6848 cut-off events. [2024-06-21 21:41:40,149 INFO L125 PetriNetUnfolderBase]: For 1026718/1026718 co-relation queries the response was YES. [2024-06-21 21:41:40,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68406 conditions, 6848 events. 4356/6848 cut-off events. For 1026718/1026718 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42721 event pairs, 719 based on Foata normal form. 3/6849 useless extension candidates. Maximal degree in co-relation 68203. Up to 6403 conditions per place. [2024-06-21 21:41:40,273 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 741 selfloop transitions, 51 changer transitions 0/797 dead transitions. [2024-06-21 21:41:40,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 797 transitions, 13792 flow [2024-06-21 21:41:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:41:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:41:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-21 21:41:40,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-21 21:41:40,275 INFO L175 Difference]: Start difference. First operand has 450 places, 775 transitions, 11998 flow. Second operand 7 states and 135 transitions. [2024-06-21 21:41:40,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 797 transitions, 13792 flow [2024-06-21 21:41:46,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 797 transitions, 13463 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-21 21:41:46,582 INFO L231 Difference]: Finished difference. Result has 445 places, 778 transitions, 11908 flow [2024-06-21 21:41:46,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11669, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=724, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11908, PETRI_PLACES=445, PETRI_TRANSITIONS=778} [2024-06-21 21:41:46,582 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-21 21:41:46,583 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 778 transitions, 11908 flow [2024-06-21 21:41:46,583 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) [2024-06-21 21:41:46,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:41:46,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:41:46,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 21:41:46,585 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:41:46,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:41:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1418647115, now seen corresponding path program 11 times [2024-06-21 21:41:46,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:41:46,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729215619] [2024-06-21 21:41:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:41:46,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:41:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:41:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:41:47,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:41:47,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729215619] [2024-06-21 21:41:47,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729215619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:41:47,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:41:47,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:41:47,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510992960] [2024-06-21 21:41:47,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:41:47,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:41:47,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:41:47,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:41:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:41:47,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:41:47,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 778 transitions, 11908 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:47,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:41:47,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:41:47,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:41:49,404 INFO L124 PetriNetUnfolderBase]: 4371/6872 cut-off events. [2024-06-21 21:41:49,404 INFO L125 PetriNetUnfolderBase]: For 1032300/1032300 co-relation queries the response was YES. [2024-06-21 21:41:49,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68433 conditions, 6872 events. 4371/6872 cut-off events. For 1032300/1032300 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 42799 event pairs, 719 based on Foata normal form. 3/6873 useless extension candidates. Maximal degree in co-relation 68233. Up to 6244 conditions per place. [2024-06-21 21:41:49,530 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 711 selfloop transitions, 99 changer transitions 0/815 dead transitions. [2024-06-21 21:41:49,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 815 transitions, 14328 flow [2024-06-21 21:41:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:41:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:41:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-21 21:41:49,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091463414634146 [2024-06-21 21:41:49,534 INFO L175 Difference]: Start difference. First operand has 445 places, 778 transitions, 11908 flow. Second operand 8 states and 167 transitions. [2024-06-21 21:41:49,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 815 transitions, 14328 flow [2024-06-21 21:41:56,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 815 transitions, 14073 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-21 21:41:56,324 INFO L231 Difference]: Finished difference. Result has 448 places, 786 transitions, 12158 flow [2024-06-21 21:41:56,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11657, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12158, PETRI_PLACES=448, PETRI_TRANSITIONS=786} [2024-06-21 21:41:56,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-21 21:41:56,325 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 786 transitions, 12158 flow [2024-06-21 21:41:56,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:56,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:41:56,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:41:56,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 21:41:56,328 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:41:56,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:41:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash 155868555, now seen corresponding path program 3 times [2024-06-21 21:41:56,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:41:56,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389128305] [2024-06-21 21:41:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:41:56,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:41:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:41:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:41:57,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:41:57,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389128305] [2024-06-21 21:41:57,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389128305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:41:57,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:41:57,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:41:57,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19875615] [2024-06-21 21:41:57,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:41:57,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:41:57,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:41:57,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:41:57,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:41:57,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:41:57,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 786 transitions, 12158 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:41:57,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:41:57,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:41:57,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:41:59,199 INFO L124 PetriNetUnfolderBase]: 4375/6891 cut-off events. [2024-06-21 21:41:59,199 INFO L125 PetriNetUnfolderBase]: For 1032630/1032630 co-relation queries the response was YES. [2024-06-21 21:41:59,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68810 conditions, 6891 events. 4375/6891 cut-off events. For 1032630/1032630 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 43105 event pairs, 743 based on Foata normal form. 4/6893 useless extension candidates. Maximal degree in co-relation 68609. Up to 6393 conditions per place. [2024-06-21 21:41:59,324 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 749 selfloop transitions, 55 changer transitions 0/809 dead transitions. [2024-06-21 21:41:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 809 transitions, 14255 flow [2024-06-21 21:41:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:41:59,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:41:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-21 21:41:59,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-21 21:41:59,325 INFO L175 Difference]: Start difference. First operand has 448 places, 786 transitions, 12158 flow. Second operand 10 states and 168 transitions. [2024-06-21 21:41:59,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 809 transitions, 14255 flow [2024-06-21 21:42:05,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 809 transitions, 14031 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-21 21:42:05,661 INFO L231 Difference]: Finished difference. Result has 454 places, 793 transitions, 12284 flow [2024-06-21 21:42:05,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11938, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12284, PETRI_PLACES=454, PETRI_TRANSITIONS=793} [2024-06-21 21:42:05,662 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-06-21 21:42:05,662 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 793 transitions, 12284 flow [2024-06-21 21:42:05,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:42:05,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:42:05,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:42:05,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 21:42:05,663 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:42:05,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:42:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1570413655, now seen corresponding path program 4 times [2024-06-21 21:42:05,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:42:05,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112456786] [2024-06-21 21:42:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:42:05,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:42:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:42:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:42:06,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:42:06,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112456786] [2024-06-21 21:42:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112456786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:42:06,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:42:06,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:42:06,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581061131] [2024-06-21 21:42:06,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:42:06,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:42:06,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:42:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:42:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:42:06,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:42:06,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 793 transitions, 12284 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:42:06,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:42:06,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:42:06,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:42:08,264 INFO L124 PetriNetUnfolderBase]: 4363/6862 cut-off events. [2024-06-21 21:42:08,264 INFO L125 PetriNetUnfolderBase]: For 1002586/1002586 co-relation queries the response was YES. [2024-06-21 21:42:08,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68354 conditions, 6862 events. 4363/6862 cut-off events. For 1002586/1002586 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 42818 event pairs, 725 based on Foata normal form. 2/6862 useless extension candidates. Maximal degree in co-relation 68151. Up to 6355 conditions per place. [2024-06-21 21:42:08,391 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 731 selfloop transitions, 76 changer transitions 0/812 dead transitions. [2024-06-21 21:42:08,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 812 transitions, 13985 flow [2024-06-21 21:42:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:42:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:42:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-21 21:42:08,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2024-06-21 21:42:08,392 INFO L175 Difference]: Start difference. First operand has 454 places, 793 transitions, 12284 flow. Second operand 6 states and 124 transitions. [2024-06-21 21:42:08,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 812 transitions, 13985 flow [2024-06-21 21:42:14,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 812 transitions, 13571 flow, removed 133 selfloop flow, removed 7 redundant places. [2024-06-21 21:42:14,933 INFO L231 Difference]: Finished difference. Result has 453 places, 793 transitions, 12083 flow [2024-06-21 21:42:14,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11878, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12083, PETRI_PLACES=453, PETRI_TRANSITIONS=793} [2024-06-21 21:42:14,934 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 411 predicate places. [2024-06-21 21:42:14,934 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 793 transitions, 12083 flow [2024-06-21 21:42:14,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:42:14,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:42:14,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:42:14,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 21:42:14,934 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:42:14,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:42:14,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1921111880, now seen corresponding path program 1 times [2024-06-21 21:42:14,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:42:14,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312334077] [2024-06-21 21:42:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:42:14,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:42:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:42:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:42:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:42:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312334077] [2024-06-21 21:42:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312334077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:42:15,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:42:15,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:42:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461430931] [2024-06-21 21:42:15,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:42:15,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:42:15,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:42:15,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:42:15,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:42:15,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:42:15,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 793 transitions, 12083 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:42:15,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:42:15,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:42:15,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:42:18,685 INFO L124 PetriNetUnfolderBase]: 5090/7999 cut-off events. [2024-06-21 21:42:18,686 INFO L125 PetriNetUnfolderBase]: For 1994923/1994923 co-relation queries the response was YES. [2024-06-21 21:42:18,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89240 conditions, 7999 events. 5090/7999 cut-off events. For 1994923/1994923 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 50274 event pairs, 681 based on Foata normal form. 56/8049 useless extension candidates. Maximal degree in co-relation 89040. Up to 4002 conditions per place. [2024-06-21 21:42:18,822 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 432 selfloop transitions, 422 changer transitions 1/860 dead transitions. [2024-06-21 21:42:18,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 860 transitions, 15559 flow [2024-06-21 21:42:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:42:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:42:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2024-06-21 21:42:18,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524390243902439 [2024-06-21 21:42:18,824 INFO L175 Difference]: Start difference. First operand has 453 places, 793 transitions, 12083 flow. Second operand 10 states and 215 transitions. [2024-06-21 21:42:18,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 860 transitions, 15559 flow [2024-06-21 21:42:25,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 860 transitions, 15259 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-21 21:42:25,464 INFO L231 Difference]: Finished difference. Result has 458 places, 804 transitions, 13226 flow [2024-06-21 21:42:25,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11795, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13226, PETRI_PLACES=458, PETRI_TRANSITIONS=804} [2024-06-21 21:42:25,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-21 21:42:25,465 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 804 transitions, 13226 flow [2024-06-21 21:42:25,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:42:25,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:42:25,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:42:25,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 21:42:25,466 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:42:25,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:42:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1922989550, now seen corresponding path program 2 times [2024-06-21 21:42:25,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:42:25,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386366222] [2024-06-21 21:42:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:42:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:42:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:42:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:42:26,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:42:26,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386366222] [2024-06-21 21:42:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386366222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:42:26,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:42:26,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:42:26,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442302029] [2024-06-21 21:42:26,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:42:26,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:42:26,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:42:26,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:42:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:42:26,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:42:26,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 804 transitions, 13226 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:42:26,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:42:26,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:42:26,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:42:29,292 INFO L124 PetriNetUnfolderBase]: 5328/8370 cut-off events. [2024-06-21 21:42:29,293 INFO L125 PetriNetUnfolderBase]: For 2104884/2104884 co-relation queries the response was YES. [2024-06-21 21:42:29,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95706 conditions, 8370 events. 5328/8370 cut-off events. For 2104884/2104884 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 52883 event pairs, 1028 based on Foata normal form. 70/8434 useless extension candidates. Maximal degree in co-relation 95505. Up to 6162 conditions per place. [2024-06-21 21:42:29,458 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 431 selfloop transitions, 398 changer transitions 16/850 dead transitions. [2024-06-21 21:42:29,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 850 transitions, 15721 flow [2024-06-21 21:42:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:42:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:42:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-06-21 21:42:29,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47764227642276424 [2024-06-21 21:42:29,460 INFO L175 Difference]: Start difference. First operand has 458 places, 804 transitions, 13226 flow. Second operand 12 states and 235 transitions. [2024-06-21 21:42:29,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 850 transitions, 15721 flow [2024-06-21 21:42:37,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 850 transitions, 15236 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-21 21:42:37,175 INFO L231 Difference]: Finished difference. Result has 466 places, 796 transitions, 13574 flow [2024-06-21 21:42:37,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12763, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13574, PETRI_PLACES=466, PETRI_TRANSITIONS=796} [2024-06-21 21:42:37,176 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-21 21:42:37,176 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 796 transitions, 13574 flow [2024-06-21 21:42:37,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:42:37,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:42:37,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:42:37,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 21:42:37,177 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:42:37,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:42:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1382150880, now seen corresponding path program 3 times [2024-06-21 21:42:37,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:42:37,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375531022] [2024-06-21 21:42:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:42:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:42:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:42:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:42:38,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:42:38,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375531022] [2024-06-21 21:42:38,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375531022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:42:38,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:42:38,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:42:38,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138046560] [2024-06-21 21:42:38,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:42:38,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:42:38,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:42:38,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:42:38,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:42:38,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:42:38,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 796 transitions, 13574 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:42:38,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:42:38,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:42:38,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:42:41,552 INFO L124 PetriNetUnfolderBase]: 5406/8526 cut-off events. [2024-06-21 21:42:41,552 INFO L125 PetriNetUnfolderBase]: For 2119939/2119939 co-relation queries the response was YES. [2024-06-21 21:42:41,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99556 conditions, 8526 events. 5406/8526 cut-off events. For 2119939/2119939 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 54205 event pairs, 993 based on Foata normal form. 56/8576 useless extension candidates. Maximal degree in co-relation 99352. Up to 6088 conditions per place. [2024-06-21 21:42:41,824 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 435 selfloop transitions, 398 changer transitions 10/848 dead transitions. [2024-06-21 21:42:41,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 848 transitions, 16366 flow [2024-06-21 21:42:41,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:42:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:42:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-06-21 21:42:41,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033259423503326 [2024-06-21 21:42:41,830 INFO L175 Difference]: Start difference. First operand has 466 places, 796 transitions, 13574 flow. Second operand 11 states and 227 transitions. [2024-06-21 21:42:41,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 848 transitions, 16366 flow [2024-06-21 21:42:49,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 848 transitions, 15513 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-21 21:42:49,127 INFO L231 Difference]: Finished difference. Result has 467 places, 791 transitions, 13547 flow [2024-06-21 21:42:49,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12725, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13547, PETRI_PLACES=467, PETRI_TRANSITIONS=791} [2024-06-21 21:42:49,128 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 425 predicate places. [2024-06-21 21:42:49,128 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 791 transitions, 13547 flow [2024-06-21 21:42:49,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:42:49,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:42:49,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:42:49,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 21:42:49,129 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:42:49,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:42:49,129 INFO L85 PathProgramCache]: Analyzing trace with hash 753627116, now seen corresponding path program 1 times [2024-06-21 21:42:49,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:42:49,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53306387] [2024-06-21 21:42:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:42:49,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:42:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:42:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:42:50,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:42:50,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53306387] [2024-06-21 21:42:50,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53306387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:42:50,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:42:50,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:42:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123150818] [2024-06-21 21:42:50,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:42:50,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:42:50,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:42:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:42:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:42:50,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:42:50,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 791 transitions, 13547 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:42:50,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:42:50,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:42:50,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:42:53,475 INFO L124 PetriNetUnfolderBase]: 5542/8746 cut-off events. [2024-06-21 21:42:53,475 INFO L125 PetriNetUnfolderBase]: For 2014324/2014324 co-relation queries the response was YES. [2024-06-21 21:42:53,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104653 conditions, 8746 events. 5542/8746 cut-off events. For 2014324/2014324 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 56006 event pairs, 1231 based on Foata normal form. 14/8758 useless extension candidates. Maximal degree in co-relation 104448. Up to 8031 conditions per place. [2024-06-21 21:42:53,633 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 784 selfloop transitions, 39 changer transitions 0/828 dead transitions. [2024-06-21 21:42:53,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 828 transitions, 15935 flow [2024-06-21 21:42:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:42:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:42:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-21 21:42:53,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-21 21:42:53,635 INFO L175 Difference]: Start difference. First operand has 467 places, 791 transitions, 13547 flow. Second operand 10 states and 185 transitions. [2024-06-21 21:42:53,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 828 transitions, 15935 flow [2024-06-21 21:43:02,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 828 transitions, 15106 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-21 21:43:02,556 INFO L231 Difference]: Finished difference. Result has 468 places, 795 transitions, 12929 flow [2024-06-21 21:43:02,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12718, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12929, PETRI_PLACES=468, PETRI_TRANSITIONS=795} [2024-06-21 21:43:02,557 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-06-21 21:43:02,557 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 795 transitions, 12929 flow [2024-06-21 21:43:02,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:43:02,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:43:02,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:43:02,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 21:43:02,557 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:43:02,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:43:02,558 INFO L85 PathProgramCache]: Analyzing trace with hash 747901664, now seen corresponding path program 4 times [2024-06-21 21:43:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:43:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304796626] [2024-06-21 21:43:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:43:02,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:43:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:43:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:43:03,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:43:03,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304796626] [2024-06-21 21:43:03,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304796626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:43:03,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:43:03,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:43:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743950304] [2024-06-21 21:43:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:43:03,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:43:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:43:03,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:43:03,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:43:03,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:43:03,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 795 transitions, 12929 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:43:03,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:43:03,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:43:03,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:43:06,797 INFO L124 PetriNetUnfolderBase]: 5756/9080 cut-off events. [2024-06-21 21:43:06,798 INFO L125 PetriNetUnfolderBase]: For 2205743/2205743 co-relation queries the response was YES. [2024-06-21 21:43:06,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109697 conditions, 9080 events. 5756/9080 cut-off events. For 2205743/2205743 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 58340 event pairs, 1278 based on Foata normal form. 16/9094 useless extension candidates. Maximal degree in co-relation 109490. Up to 8245 conditions per place. [2024-06-21 21:43:06,979 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 744 selfloop transitions, 84 changer transitions 0/833 dead transitions. [2024-06-21 21:43:06,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 833 transitions, 15495 flow [2024-06-21 21:43:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:43:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:43:06,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-21 21:43:06,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523281596452328 [2024-06-21 21:43:06,980 INFO L175 Difference]: Start difference. First operand has 468 places, 795 transitions, 12929 flow. Second operand 11 states and 204 transitions. [2024-06-21 21:43:06,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 833 transitions, 15495 flow [2024-06-21 21:43:17,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 833 transitions, 15432 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-21 21:43:17,944 INFO L231 Difference]: Finished difference. Result has 475 places, 801 transitions, 13273 flow [2024-06-21 21:43:17,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12866, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13273, PETRI_PLACES=475, PETRI_TRANSITIONS=801} [2024-06-21 21:43:17,944 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-21 21:43:17,944 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 801 transitions, 13273 flow [2024-06-21 21:43:17,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:43:17,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:43:17,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:43:17,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 21:43:17,945 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:43:17,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:43:17,945 INFO L85 PathProgramCache]: Analyzing trace with hash 747905384, now seen corresponding path program 5 times [2024-06-21 21:43:17,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:43:17,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270016601] [2024-06-21 21:43:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:43:17,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:43:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:43:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:43:19,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:43:19,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270016601] [2024-06-21 21:43:19,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270016601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:43:19,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:43:19,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:43:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246462630] [2024-06-21 21:43:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:43:19,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:43:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:43:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:43:19,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:43:19,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:43:19,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 801 transitions, 13273 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:43:19,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:43:19,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:43:19,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:43:22,663 INFO L124 PetriNetUnfolderBase]: 5828/9192 cut-off events. [2024-06-21 21:43:22,663 INFO L125 PetriNetUnfolderBase]: For 2277436/2277436 co-relation queries the response was YES. [2024-06-21 21:43:22,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111701 conditions, 9192 events. 5828/9192 cut-off events. For 2277436/2277436 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 59134 event pairs, 1319 based on Foata normal form. 20/9210 useless extension candidates. Maximal degree in co-relation 111491. Up to 8584 conditions per place. [2024-06-21 21:43:22,833 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 748 selfloop transitions, 79 changer transitions 0/832 dead transitions. [2024-06-21 21:43:22,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 832 transitions, 15435 flow [2024-06-21 21:43:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:43:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:43:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-21 21:43:22,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-06-21 21:43:22,835 INFO L175 Difference]: Start difference. First operand has 475 places, 801 transitions, 13273 flow. Second operand 12 states and 214 transitions. [2024-06-21 21:43:22,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 832 transitions, 15435 flow [2024-06-21 21:43:34,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 832 transitions, 15306 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 21:43:34,038 INFO L231 Difference]: Finished difference. Result has 481 places, 803 transitions, 13402 flow [2024-06-21 21:43:34,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13146, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13402, PETRI_PLACES=481, PETRI_TRANSITIONS=803} [2024-06-21 21:43:34,039 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-21 21:43:34,039 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 803 transitions, 13402 flow [2024-06-21 21:43:34,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:43:34,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:43:34,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:43:34,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 21:43:34,040 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:43:34,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:43:34,040 INFO L85 PathProgramCache]: Analyzing trace with hash 748049534, now seen corresponding path program 6 times [2024-06-21 21:43:34,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:43:34,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716018625] [2024-06-21 21:43:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:43:34,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:43:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:43:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:43:35,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:43:35,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716018625] [2024-06-21 21:43:35,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716018625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:43:35,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:43:35,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:43:35,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357356115] [2024-06-21 21:43:35,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:43:35,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:43:35,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:43:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:43:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:43:35,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:43:35,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 803 transitions, 13402 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:43:35,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:43:35,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:43:35,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:43:38,732 INFO L124 PetriNetUnfolderBase]: 6047/9545 cut-off events. [2024-06-21 21:43:38,732 INFO L125 PetriNetUnfolderBase]: For 2685363/2685363 co-relation queries the response was YES. [2024-06-21 21:43:38,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114384 conditions, 9545 events. 6047/9545 cut-off events. For 2685363/2685363 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 61942 event pairs, 1394 based on Foata normal form. 80/9623 useless extension candidates. Maximal degree in co-relation 114172. Up to 8599 conditions per place. [2024-06-21 21:43:38,916 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 751 selfloop transitions, 73 changer transitions 10/839 dead transitions. [2024-06-21 21:43:38,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 839 transitions, 15487 flow [2024-06-21 21:43:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:43:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:43:38,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-21 21:43:38,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-21 21:43:38,917 INFO L175 Difference]: Start difference. First operand has 481 places, 803 transitions, 13402 flow. Second operand 11 states and 205 transitions. [2024-06-21 21:43:38,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 839 transitions, 15487 flow [2024-06-21 21:43:51,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 839 transitions, 15287 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 21:43:51,888 INFO L231 Difference]: Finished difference. Result has 484 places, 801 transitions, 13457 flow [2024-06-21 21:43:51,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13202, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=730, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13457, PETRI_PLACES=484, PETRI_TRANSITIONS=801} [2024-06-21 21:43:51,889 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 442 predicate places. [2024-06-21 21:43:51,889 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 801 transitions, 13457 flow [2024-06-21 21:43:51,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:43:51,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:43:51,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:43:51,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 21:43:51,890 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:43:51,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:43:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1424376132, now seen corresponding path program 2 times [2024-06-21 21:43:51,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:43:51,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593811604] [2024-06-21 21:43:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:43:51,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:43:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:43:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:43:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:43:52,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593811604] [2024-06-21 21:43:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593811604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:43:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:43:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:43:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540930592] [2024-06-21 21:43:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:43:52,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:43:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:43:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:43:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:43:52,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:43:52,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 801 transitions, 13457 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:43:52,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:43:52,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:43:52,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:43:56,320 INFO L124 PetriNetUnfolderBase]: 5973/9435 cut-off events. [2024-06-21 21:43:56,320 INFO L125 PetriNetUnfolderBase]: For 2323708/2323708 co-relation queries the response was YES. [2024-06-21 21:43:56,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113503 conditions, 9435 events. 5973/9435 cut-off events. For 2323708/2323708 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 61156 event pairs, 1358 based on Foata normal form. 26/9459 useless extension candidates. Maximal degree in co-relation 113289. Up to 8832 conditions per place. [2024-06-21 21:43:56,488 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 774 selfloop transitions, 53 changer transitions 0/832 dead transitions. [2024-06-21 21:43:56,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 832 transitions, 15508 flow [2024-06-21 21:43:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:43:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:43:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-21 21:43:56,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-21 21:43:56,489 INFO L175 Difference]: Start difference. First operand has 484 places, 801 transitions, 13457 flow. Second operand 9 states and 166 transitions. [2024-06-21 21:43:56,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 832 transitions, 15508 flow [2024-06-21 21:44:08,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 832 transitions, 15295 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-21 21:44:08,150 INFO L231 Difference]: Finished difference. Result has 484 places, 805 transitions, 13485 flow [2024-06-21 21:44:08,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13244, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13485, PETRI_PLACES=484, PETRI_TRANSITIONS=805} [2024-06-21 21:44:08,150 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 442 predicate places. [2024-06-21 21:44:08,151 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 805 transitions, 13485 flow [2024-06-21 21:44:08,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:44:08,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:44:08,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:44:08,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 21:44:08,151 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:44:08,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:44:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1424383572, now seen corresponding path program 3 times [2024-06-21 21:44:08,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:44:08,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671434696] [2024-06-21 21:44:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:44:08,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:44:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:44:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:44:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:44:09,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671434696] [2024-06-21 21:44:09,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671434696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:44:09,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:44:09,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:44:09,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291676904] [2024-06-21 21:44:09,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:44:09,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:44:09,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:44:09,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:44:09,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:44:09,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:44:09,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 805 transitions, 13485 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:44:09,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:44:09,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:44:09,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:44:12,751 INFO L124 PetriNetUnfolderBase]: 6185/9755 cut-off events. [2024-06-21 21:44:12,752 INFO L125 PetriNetUnfolderBase]: For 2456356/2456356 co-relation queries the response was YES. [2024-06-21 21:44:13,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119602 conditions, 9755 events. 6185/9755 cut-off events. For 2456356/2456356 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 63654 event pairs, 1354 based on Foata normal form. 14/9767 useless extension candidates. Maximal degree in co-relation 119387. Up to 8592 conditions per place. [2024-06-21 21:44:13,087 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 782 selfloop transitions, 56 changer transitions 0/843 dead transitions. [2024-06-21 21:44:13,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 843 transitions, 15993 flow [2024-06-21 21:44:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:44:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:44:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-21 21:44:13,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-21 21:44:13,089 INFO L175 Difference]: Start difference. First operand has 484 places, 805 transitions, 13485 flow. Second operand 9 states and 171 transitions. [2024-06-21 21:44:13,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 843 transitions, 15993 flow [2024-06-21 21:44:26,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 843 transitions, 15869 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 21:44:26,466 INFO L231 Difference]: Finished difference. Result has 487 places, 809 transitions, 13635 flow [2024-06-21 21:44:26,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13361, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=750, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13635, PETRI_PLACES=487, PETRI_TRANSITIONS=809} [2024-06-21 21:44:26,466 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-21 21:44:26,467 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 809 transitions, 13635 flow [2024-06-21 21:44:26,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:44:26,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:44:26,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:44:26,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 21:44:26,467 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:44:26,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:44:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash 526637236, now seen corresponding path program 4 times [2024-06-21 21:44:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:44:26,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429613539] [2024-06-21 21:44:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:44:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:44:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:44:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:44:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:44:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429613539] [2024-06-21 21:44:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429613539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:44:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:44:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:44:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027573824] [2024-06-21 21:44:27,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:44:27,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:44:27,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:44:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:44:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:44:27,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:44:27,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 809 transitions, 13635 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:44:27,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:44:27,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:44:27,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:44:31,295 INFO L124 PetriNetUnfolderBase]: 6317/9955 cut-off events. [2024-06-21 21:44:31,295 INFO L125 PetriNetUnfolderBase]: For 2608717/2608717 co-relation queries the response was YES. [2024-06-21 21:44:31,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122953 conditions, 9955 events. 6317/9955 cut-off events. For 2608717/2608717 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 64935 event pairs, 1482 based on Foata normal form. 26/9979 useless extension candidates. Maximal degree in co-relation 122736. Up to 8847 conditions per place. [2024-06-21 21:44:31,481 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 676 selfloop transitions, 190 changer transitions 1/872 dead transitions. [2024-06-21 21:44:31,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 872 transitions, 16814 flow [2024-06-21 21:44:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:44:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:44:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-21 21:44:31,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013550135501355 [2024-06-21 21:44:31,482 INFO L175 Difference]: Start difference. First operand has 487 places, 809 transitions, 13635 flow. Second operand 9 states and 185 transitions. [2024-06-21 21:44:31,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 872 transitions, 16814 flow [2024-06-21 21:44:45,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 872 transitions, 16708 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-21 21:44:45,063 INFO L231 Difference]: Finished difference. Result has 495 places, 836 transitions, 14900 flow [2024-06-21 21:44:45,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13541, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14900, PETRI_PLACES=495, PETRI_TRANSITIONS=836} [2024-06-21 21:44:45,064 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 453 predicate places. [2024-06-21 21:44:45,064 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 836 transitions, 14900 flow [2024-06-21 21:44:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:44:45,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:44:45,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:44:45,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 21:44:45,065 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:44:45,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:44:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 673535550, now seen corresponding path program 7 times [2024-06-21 21:44:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:44:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929064529] [2024-06-21 21:44:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:44:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:44:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:44:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:44:46,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:44:46,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929064529] [2024-06-21 21:44:46,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929064529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:44:46,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:44:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:44:46,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996183530] [2024-06-21 21:44:46,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:44:46,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:44:46,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:44:46,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:44:46,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:44:46,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:44:46,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 836 transitions, 14900 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:44:46,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:44:46,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:44:46,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:44:50,156 INFO L124 PetriNetUnfolderBase]: 6523/10288 cut-off events. [2024-06-21 21:44:50,156 INFO L125 PetriNetUnfolderBase]: For 2900080/2900080 co-relation queries the response was YES. [2024-06-21 21:44:50,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128828 conditions, 10288 events. 6523/10288 cut-off events. For 2900080/2900080 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 67452 event pairs, 1553 based on Foata normal form. 54/10340 useless extension candidates. Maximal degree in co-relation 128605. Up to 9035 conditions per place. [2024-06-21 21:44:50,348 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 720 selfloop transitions, 149 changer transitions 13/887 dead transitions. [2024-06-21 21:44:50,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 887 transitions, 17326 flow [2024-06-21 21:44:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:44:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:44:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-21 21:44:50,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-21 21:44:50,349 INFO L175 Difference]: Start difference. First operand has 495 places, 836 transitions, 14900 flow. Second operand 10 states and 200 transitions. [2024-06-21 21:44:50,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 887 transitions, 17326 flow [2024-06-21 21:45:06,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 887 transitions, 16963 flow, removed 172 selfloop flow, removed 3 redundant places. [2024-06-21 21:45:06,166 INFO L231 Difference]: Finished difference. Result has 503 places, 838 transitions, 15043 flow [2024-06-21 21:45:06,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14633, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15043, PETRI_PLACES=503, PETRI_TRANSITIONS=838} [2024-06-21 21:45:06,167 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-21 21:45:06,167 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 838 transitions, 15043 flow [2024-06-21 21:45:06,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:45:06,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:45:06,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:45:06,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 21:45:06,168 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:45:06,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:45:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash 531993664, now seen corresponding path program 8 times [2024-06-21 21:45:06,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:45:06,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292767736] [2024-06-21 21:45:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:45:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:45:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:45:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:45:07,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:45:07,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292767736] [2024-06-21 21:45:07,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292767736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:45:07,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:45:07,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:45:07,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268522692] [2024-06-21 21:45:07,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:45:07,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:45:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:45:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:45:07,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:45:07,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:45:07,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 838 transitions, 15043 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:45:07,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:45:07,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:45:07,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:45:11,293 INFO L124 PetriNetUnfolderBase]: 6433/10163 cut-off events. [2024-06-21 21:45:11,293 INFO L125 PetriNetUnfolderBase]: For 2636341/2636341 co-relation queries the response was YES. [2024-06-21 21:45:11,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127914 conditions, 10163 events. 6433/10163 cut-off events. For 2636341/2636341 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 66740 event pairs, 1477 based on Foata normal form. 20/10181 useless extension candidates. Maximal degree in co-relation 127689. Up to 9488 conditions per place. [2024-06-21 21:45:11,482 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 803 selfloop transitions, 60 changer transitions 0/868 dead transitions. [2024-06-21 21:45:11,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 868 transitions, 17097 flow [2024-06-21 21:45:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:45:11,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:45:11,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-21 21:45:11,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4279379157427938 [2024-06-21 21:45:11,484 INFO L175 Difference]: Start difference. First operand has 503 places, 838 transitions, 15043 flow. Second operand 11 states and 193 transitions. [2024-06-21 21:45:11,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 868 transitions, 17097 flow [2024-06-21 21:45:24,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 868 transitions, 16742 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-21 21:45:24,479 INFO L231 Difference]: Finished difference. Result has 509 places, 842 transitions, 14995 flow [2024-06-21 21:45:24,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14688, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=778, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14995, PETRI_PLACES=509, PETRI_TRANSITIONS=842} [2024-06-21 21:45:24,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 467 predicate places. [2024-06-21 21:45:24,480 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 842 transitions, 14995 flow [2024-06-21 21:45:24,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:45:24,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:45:24,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:45:24,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 21:45:24,480 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:45:24,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:45:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1418658120, now seen corresponding path program 9 times [2024-06-21 21:45:24,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:45:24,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430556481] [2024-06-21 21:45:24,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:45:24,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:45:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:45:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:45:25,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:45:25,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430556481] [2024-06-21 21:45:25,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430556481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:45:25,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:45:25,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:45:25,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629294246] [2024-06-21 21:45:25,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:45:25,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:45:25,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:45:25,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:45:25,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:45:25,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:45:25,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 842 transitions, 14995 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:45:25,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:45:25,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:45:25,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:45:29,577 INFO L124 PetriNetUnfolderBase]: 6756/10622 cut-off events. [2024-06-21 21:45:29,577 INFO L125 PetriNetUnfolderBase]: For 2917246/2917246 co-relation queries the response was YES. [2024-06-21 21:45:29,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137492 conditions, 10622 events. 6756/10622 cut-off events. For 2917246/2917246 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 69725 event pairs, 1454 based on Foata normal form. 16/10636 useless extension candidates. Maximal degree in co-relation 137264. Up to 9243 conditions per place. [2024-06-21 21:45:29,776 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 733 selfloop transitions, 166 changer transitions 0/904 dead transitions. [2024-06-21 21:45:29,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 904 transitions, 18404 flow [2024-06-21 21:45:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:45:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:45:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-21 21:45:29,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097560975609756 [2024-06-21 21:45:29,778 INFO L175 Difference]: Start difference. First operand has 509 places, 842 transitions, 14995 flow. Second operand 10 states and 209 transitions. [2024-06-21 21:45:29,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 904 transitions, 18404 flow [2024-06-21 21:45:45,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 904 transitions, 18265 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-21 21:45:45,606 INFO L231 Difference]: Finished difference. Result has 519 places, 860 transitions, 16029 flow [2024-06-21 21:45:45,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14856, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16029, PETRI_PLACES=519, PETRI_TRANSITIONS=860} [2024-06-21 21:45:45,607 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 477 predicate places. [2024-06-21 21:45:45,607 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 860 transitions, 16029 flow [2024-06-21 21:45:45,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:45:45,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:45:45,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:45:45,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 21:45:45,607 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:45:45,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:45:45,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1418661840, now seen corresponding path program 10 times [2024-06-21 21:45:45,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:45:45,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856800182] [2024-06-21 21:45:45,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:45:45,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:45:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:45:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:45:46,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:45:46,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856800182] [2024-06-21 21:45:46,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856800182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:45:46,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:45:46,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:45:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183552896] [2024-06-21 21:45:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:45:46,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:45:46,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:45:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:45:46,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:45:46,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:45:46,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 860 transitions, 16029 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:45:46,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:45:46,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:45:46,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:45:50,789 INFO L124 PetriNetUnfolderBase]: 6769/10640 cut-off events. [2024-06-21 21:45:50,789 INFO L125 PetriNetUnfolderBase]: For 2916326/2916326 co-relation queries the response was YES. [2024-06-21 21:45:50,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138208 conditions, 10640 events. 6769/10640 cut-off events. For 2916326/2916326 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 69882 event pairs, 1584 based on Foata normal form. 20/10658 useless extension candidates. Maximal degree in co-relation 137974. Up to 9791 conditions per place. [2024-06-21 21:45:51,016 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 742 selfloop transitions, 152 changer transitions 0/899 dead transitions. [2024-06-21 21:45:51,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 899 transitions, 18592 flow [2024-06-21 21:45:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:45:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:45:51,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-21 21:45:51,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47671840354767187 [2024-06-21 21:45:51,018 INFO L175 Difference]: Start difference. First operand has 519 places, 860 transitions, 16029 flow. Second operand 11 states and 215 transitions. [2024-06-21 21:45:51,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 899 transitions, 18592 flow [2024-06-21 21:46:04,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 899 transitions, 18465 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-21 21:46:04,902 INFO L231 Difference]: Finished difference. Result has 528 places, 861 transitions, 16267 flow [2024-06-21 21:46:04,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15904, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16267, PETRI_PLACES=528, PETRI_TRANSITIONS=861} [2024-06-21 21:46:04,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 486 predicate places. [2024-06-21 21:46:04,903 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 861 transitions, 16267 flow [2024-06-21 21:46:04,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:46:04,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:46:04,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:46:04,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 21:46:04,904 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:46:04,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:46:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash 155885140, now seen corresponding path program 5 times [2024-06-21 21:46:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:46:04,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312225533] [2024-06-21 21:46:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:46:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:46:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:46:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:46:05,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:46:05,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312225533] [2024-06-21 21:46:05,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312225533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:46:05,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:46:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:46:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340557250] [2024-06-21 21:46:05,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:46:05,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:46:05,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:46:05,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:46:05,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:46:05,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:46:05,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 861 transitions, 16267 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:46:05,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:46:05,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:46:05,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:46:10,350 INFO L124 PetriNetUnfolderBase]: 7031/11073 cut-off events. [2024-06-21 21:46:10,351 INFO L125 PetriNetUnfolderBase]: For 3166686/3166686 co-relation queries the response was YES. [2024-06-21 21:46:10,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146668 conditions, 11073 events. 7031/11073 cut-off events. For 3166686/3166686 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 73722 event pairs, 1652 based on Foata normal form. 16/11087 useless extension candidates. Maximal degree in co-relation 146432. Up to 9665 conditions per place. [2024-06-21 21:46:10,577 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 762 selfloop transitions, 143 changer transitions 0/910 dead transitions. [2024-06-21 21:46:10,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 910 transitions, 19030 flow [2024-06-21 21:46:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:46:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:46:10,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-21 21:46:10,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-06-21 21:46:10,578 INFO L175 Difference]: Start difference. First operand has 528 places, 861 transitions, 16267 flow. Second operand 8 states and 176 transitions. [2024-06-21 21:46:10,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 910 transitions, 19030 flow [2024-06-21 21:46:25,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 910 transitions, 18718 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-21 21:46:25,015 INFO L231 Difference]: Finished difference. Result has 530 places, 868 transitions, 16529 flow [2024-06-21 21:46:25,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15955, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16529, PETRI_PLACES=530, PETRI_TRANSITIONS=868} [2024-06-21 21:46:25,015 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 488 predicate places. [2024-06-21 21:46:25,016 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 868 transitions, 16529 flow [2024-06-21 21:46:25,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:46:25,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:46:25,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:46:25,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 21:46:25,016 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:46:25,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:46:25,017 INFO L85 PathProgramCache]: Analyzing trace with hash 165081910, now seen corresponding path program 6 times [2024-06-21 21:46:25,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:46:25,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560386716] [2024-06-21 21:46:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:46:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:46:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:46:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:46:25,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:46:25,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560386716] [2024-06-21 21:46:25,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560386716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:46:25,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:46:25,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:46:25,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512795711] [2024-06-21 21:46:25,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:46:25,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:46:25,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:46:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:46:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:46:25,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:46:25,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 868 transitions, 16529 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:46:25,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:46:25,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:46:25,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:46:30,597 INFO L124 PetriNetUnfolderBase]: 7256/11458 cut-off events. [2024-06-21 21:46:30,597 INFO L125 PetriNetUnfolderBase]: For 3380896/3380896 co-relation queries the response was YES. [2024-06-21 21:46:30,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153658 conditions, 11458 events. 7256/11458 cut-off events. For 3380896/3380896 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 76900 event pairs, 1718 based on Foata normal form. 16/11472 useless extension candidates. Maximal degree in co-relation 153420. Up to 10548 conditions per place. [2024-06-21 21:46:30,829 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 858 selfloop transitions, 57 changer transitions 0/920 dead transitions. [2024-06-21 21:46:30,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 920 transitions, 19390 flow [2024-06-21 21:46:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:46:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:46:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-21 21:46:30,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396341463414634 [2024-06-21 21:46:30,830 INFO L175 Difference]: Start difference. First operand has 530 places, 868 transitions, 16529 flow. Second operand 8 states and 177 transitions. [2024-06-21 21:46:30,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 920 transitions, 19390 flow [2024-06-21 21:46:44,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 920 transitions, 19186 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-21 21:46:45,000 INFO L231 Difference]: Finished difference. Result has 535 places, 878 transitions, 16775 flow [2024-06-21 21:46:45,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16327, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16775, PETRI_PLACES=535, PETRI_TRANSITIONS=878} [2024-06-21 21:46:45,001 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 493 predicate places. [2024-06-21 21:46:45,001 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 878 transitions, 16775 flow [2024-06-21 21:46:45,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:46:45,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:46:45,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:46:45,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 21:46:45,002 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:46:45,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:46:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash -93472970, now seen corresponding path program 7 times [2024-06-21 21:46:45,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:46:45,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128927945] [2024-06-21 21:46:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:46:45,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:46:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:46:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:46:45,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:46:45,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128927945] [2024-06-21 21:46:45,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128927945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:46:45,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:46:45,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:46:45,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148248900] [2024-06-21 21:46:45,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:46:45,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:46:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:46:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:46:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:46:45,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:46:45,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 878 transitions, 16775 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:46:45,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:46:45,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:46:45,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:46:50,486 INFO L124 PetriNetUnfolderBase]: 7303/11521 cut-off events. [2024-06-21 21:46:50,486 INFO L125 PetriNetUnfolderBase]: For 3374597/3374597 co-relation queries the response was YES. [2024-06-21 21:46:50,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155044 conditions, 11521 events. 7303/11521 cut-off events. For 3374597/3374597 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 77494 event pairs, 1812 based on Foata normal form. 16/11535 useless extension candidates. Maximal degree in co-relation 154803. Up to 10540 conditions per place. [2024-06-21 21:46:50,873 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 751 selfloop transitions, 160 changer transitions 0/916 dead transitions. [2024-06-21 21:46:50,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 916 transitions, 19006 flow [2024-06-21 21:46:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:46:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:46:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-21 21:46:50,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524390243902439 [2024-06-21 21:46:50,875 INFO L175 Difference]: Start difference. First operand has 535 places, 878 transitions, 16775 flow. Second operand 8 states and 172 transitions. [2024-06-21 21:46:50,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 916 transitions, 19006 flow [2024-06-21 21:47:09,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 916 transitions, 18863 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-21 21:47:09,135 INFO L231 Difference]: Finished difference. Result has 540 places, 882 transitions, 17113 flow [2024-06-21 21:47:09,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16632, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=878, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17113, PETRI_PLACES=540, PETRI_TRANSITIONS=882} [2024-06-21 21:47:09,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 498 predicate places. [2024-06-21 21:47:09,137 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 882 transitions, 17113 flow [2024-06-21 21:47:09,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 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) [2024-06-21 21:47:09,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:47:09,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:47:09,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 21:47:09,138 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:47:09,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:47:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash -783812510, now seen corresponding path program 1 times [2024-06-21 21:47:09,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:47:09,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603043879] [2024-06-21 21:47:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:47:09,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:47:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:47:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:47:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:47:09,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603043879] [2024-06-21 21:47:09,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603043879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:47:09,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:47:09,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:47:09,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984062700] [2024-06-21 21:47:09,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:47:09,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:47:09,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:47:09,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:47:09,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:47:10,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:47:10,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 882 transitions, 17113 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:47:10,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:47:10,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:47:10,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:47:14,678 INFO L124 PetriNetUnfolderBase]: 7331/11564 cut-off events. [2024-06-21 21:47:14,678 INFO L125 PetriNetUnfolderBase]: For 3302555/3302555 co-relation queries the response was YES. [2024-06-21 21:47:14,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155889 conditions, 11564 events. 7331/11564 cut-off events. For 3302555/3302555 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 77738 event pairs, 1868 based on Foata normal form. 1/11556 useless extension candidates. Maximal degree in co-relation 155646. Up to 11050 conditions per place. [2024-06-21 21:47:14,926 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 844 selfloop transitions, 69 changer transitions 0/918 dead transitions. [2024-06-21 21:47:14,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 918 transitions, 19572 flow [2024-06-21 21:47:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:47:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:47:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-21 21:47:14,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-21 21:47:14,928 INFO L175 Difference]: Start difference. First operand has 540 places, 882 transitions, 17113 flow. Second operand 9 states and 162 transitions. [2024-06-21 21:47:14,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 918 transitions, 19572 flow [2024-06-21 21:47:33,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 918 transitions, 19247 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 21:47:33,835 INFO L231 Difference]: Finished difference. Result has 544 places, 897 transitions, 17279 flow [2024-06-21 21:47:33,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16788, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=882, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=819, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17279, PETRI_PLACES=544, PETRI_TRANSITIONS=897} [2024-06-21 21:47:33,835 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 502 predicate places. [2024-06-21 21:47:33,836 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 897 transitions, 17279 flow [2024-06-21 21:47:33,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:47:33,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:47:33,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:47:33,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 21:47:33,836 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 21:47:33,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:47:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash -46313122, now seen corresponding path program 1 times [2024-06-21 21:47:33,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:47:33,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956687346] [2024-06-21 21:47:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:47:33,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:47:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:47:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:47:34,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:47:34,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956687346] [2024-06-21 21:47:34,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956687346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:47:34,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:47:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:47:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413721049] [2024-06-21 21:47:34,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:47:34,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:47:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:47:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:47:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:47:34,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-21 21:47:34,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 897 transitions, 17279 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:47:34,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:47:34,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-21 21:47:34,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:47:39,666 INFO L124 PetriNetUnfolderBase]: 7346/11592 cut-off events. [2024-06-21 21:47:39,667 INFO L125 PetriNetUnfolderBase]: For 3367747/3367747 co-relation queries the response was YES. [2024-06-21 21:47:39,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156692 conditions, 11592 events. 7346/11592 cut-off events. For 3367747/3367747 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 78019 event pairs, 1840 based on Foata normal form. 2/11592 useless extension candidates. Maximal degree in co-relation 156447. Up to 10998 conditions per place. [2024-06-21 21:47:40,048 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 838 selfloop transitions, 93 changer transitions 0/936 dead transitions. [2024-06-21 21:47:40,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 936 transitions, 19827 flow [2024-06-21 21:47:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:47:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:47:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-21 21:47:40,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-21 21:47:40,049 INFO L175 Difference]: Start difference. First operand has 544 places, 897 transitions, 17279 flow. Second operand 9 states and 172 transitions. [2024-06-21 21:47:40,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 936 transitions, 19827 flow Killed by 15