./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:29:02,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:29:02,846 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:29:02,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:29:02,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:29:02,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:29:02,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:29:02,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:29:02,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:29:02,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:29:02,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:29:02,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:29:02,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:29:02,886 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:29:02,886 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:29:02,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:29:02,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:29:02,887 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:29:02,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:29:02,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:29:02,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:29:02,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:29:02,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:29:02,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:29:02,889 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:29:02,889 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:29:02,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:29:02,890 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:29:02,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:29:02,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:29:02,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:29:02,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:29:02,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:29:02,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:29:02,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:29:02,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:29:02,893 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:29:02,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:29:02,893 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:29:02,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:29:02,893 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:29:02,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:29:02,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:29:02,894 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:29:03,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:29:03,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:29:03,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:29:03,186 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:29:03,186 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:29:03,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-28 01:29:04,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:29:04,458 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:29:04,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-28 01:29:04,470 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a223a7370/b91110b0a656460cb0b4e51eb19de236/FLAGd8be9864e [2024-06-28 01:29:04,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a223a7370/b91110b0a656460cb0b4e51eb19de236 [2024-06-28 01:29:04,483 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:29:04,484 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:29:04,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 01:29:04,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:29:04,674 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:29:04,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:29:04,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:29:04,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:29:04,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:29:04" (1/2) ... [2024-06-28 01:29:04,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db44a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:29:04, skipping insertion in model container [2024-06-28 01:29:04,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:29:04" (1/2) ... [2024-06-28 01:29:04,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d6e18c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:29:04, skipping insertion in model container [2024-06-28 01:29:04,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:29:04" (2/2) ... [2024-06-28 01:29:04,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db44a50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:04, skipping insertion in model container [2024-06-28 01:29:04,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:29:04" (2/2) ... [2024-06-28 01:29:04,682 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:29:04,745 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:29:04,746 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:29:04,746 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:29:04,746 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:29:04,746 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:29:04,747 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-28 01:29:04,780 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:29:04,939 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i[986,999] [2024-06-28 01:29:05,103 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:29:05,114 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:29:05,141 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i[986,999] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:29:05,232 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:29:05,266 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:29:05,267 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05 WrapperNode [2024-06-28 01:29:05,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:29:05,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:29:05,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:29:05,268 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:29:05,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,327 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2024-06-28 01:29:05,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:29:05,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:29:05,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:29:05,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:29:05,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,347 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,363 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:29:05,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:29:05,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:29:05,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:29:05,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:29:05,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (1/1) ... [2024-06-28 01:29:05,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:29:05,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:29:05,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:29:05,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:29:05,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:29:05,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:29:05,444 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:29:05,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:29:05,444 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:29:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:29:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:29:05,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:29:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:29:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:29:05,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:29:05,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:29:05,447 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:29:05,599 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:29:05,601 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:29:05,917 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:29:05,917 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:29:06,077 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:29:06,077 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:29:06,078 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:29:06 BoogieIcfgContainer [2024-06-28 01:29:06,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:29:06,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:29:06,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:29:06,083 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:29:06,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:29:04" (1/4) ... [2024-06-28 01:29:06,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1676b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:29:06, skipping insertion in model container [2024-06-28 01:29:06,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:29:04" (2/4) ... [2024-06-28 01:29:06,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1676b44 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:29:06, skipping insertion in model container [2024-06-28 01:29:06,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:05" (3/4) ... [2024-06-28 01:29:06,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1676b44 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:29:06, skipping insertion in model container [2024-06-28 01:29:06,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:29:06" (4/4) ... [2024-06-28 01:29:06,086 INFO L112 eAbstractionObserver]: Analyzing ICFG mix024_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-28 01:29:06,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:29:06,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:29:06,099 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:29:06,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:29:06,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:29:06,193 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-28 01:29:06,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:29:06,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-28 01:29:06,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:29:06,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-28 01:29:06,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:29:06,217 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;@523ea869, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:29:06,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:29:06,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:29:06,221 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:29:06,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:29:06,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:06,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:29:06,222 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:06,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:06,228 INFO L85 PathProgramCache]: Analyzing trace with hash 346816662, now seen corresponding path program 1 times [2024-06-28 01:29:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264029522] [2024-06-28 01:29:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264029522] [2024-06-28 01:29:07,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264029522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:07,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:07,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:29:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709659523] [2024-06-28 01:29:07,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:07,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:29:07,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:29:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:29:07,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:29:07,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:07,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:07,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:29:07,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:08,226 INFO L124 PetriNetUnfolderBase]: 4500/7426 cut-off events. [2024-06-28 01:29:08,227 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:29:08,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13989 conditions, 7426 events. 4500/7426 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49878 event pairs, 3527 based on Foata normal form. 211/7025 useless extension candidates. Maximal degree in co-relation 13977. Up to 6446 conditions per place. [2024-06-28 01:29:08,268 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 42 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 01:29:08,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 229 flow [2024-06-28 01:29:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:29:08,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:29:08,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-28 01:29:08,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6802721088435374 [2024-06-28 01:29:08,280 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 100 transitions. [2024-06-28 01:29:08,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 229 flow [2024-06-28 01:29:08,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:08,286 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-28 01:29:08,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-28 01:29:08,291 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:29:08,292 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-28 01:29:08,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:08,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:08,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:29:08,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:29:08,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:08,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:08,293 INFO L85 PathProgramCache]: Analyzing trace with hash 346817073, now seen corresponding path program 1 times [2024-06-28 01:29:08,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:08,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413759096] [2024-06-28 01:29:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:08,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:08,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413759096] [2024-06-28 01:29:08,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413759096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:08,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:08,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:29:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146601795] [2024-06-28 01:29:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:08,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:29:08,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:08,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:29:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:29:08,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-06-28 01:29:08,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:08,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:08,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-06-28 01:29:08,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:08,584 INFO L124 PetriNetUnfolderBase]: 996/1961 cut-off events. [2024-06-28 01:29:08,585 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:29:08,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3725 conditions, 1961 events. 996/1961 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13416 event pairs, 655 based on Foata normal form. 0/1834 useless extension candidates. Maximal degree in co-relation 3713. Up to 1277 conditions per place. [2024-06-28 01:29:08,595 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 35 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-06-28 01:29:08,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 236 flow [2024-06-28 01:29:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:29:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:29:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-06-28 01:29:08,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-06-28 01:29:08,596 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 3 states and 116 transitions. [2024-06-28 01:29:08,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 236 flow [2024-06-28 01:29:08,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:08,598 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 126 flow [2024-06-28 01:29:08,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 01:29:08,599 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:29:08,599 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 126 flow [2024-06-28 01:29:08,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:08,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:08,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:08,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:29:08,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:08,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1716588972, now seen corresponding path program 1 times [2024-06-28 01:29:08,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:08,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132187754] [2024-06-28 01:29:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:08,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:09,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:09,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132187754] [2024-06-28 01:29:09,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132187754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:09,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:29:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415470759] [2024-06-28 01:29:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:09,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:29:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:29:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:29:09,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-28 01:29:09,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:09,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:09,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-28 01:29:09,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:10,018 INFO L124 PetriNetUnfolderBase]: 3821/6211 cut-off events. [2024-06-28 01:29:10,018 INFO L125 PetriNetUnfolderBase]: For 1388/1388 co-relation queries the response was YES. [2024-06-28 01:29:10,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13136 conditions, 6211 events. 3821/6211 cut-off events. For 1388/1388 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 39561 event pairs, 2471 based on Foata normal form. 3/5962 useless extension candidates. Maximal degree in co-relation 13123. Up to 5470 conditions per place. [2024-06-28 01:29:10,051 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 50 selfloop transitions, 8 changer transitions 2/73 dead transitions. [2024-06-28 01:29:10,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 318 flow [2024-06-28 01:29:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:29:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:29:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-28 01:29:10,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-06-28 01:29:10,055 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 126 flow. Second operand 4 states and 124 transitions. [2024-06-28 01:29:10,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 318 flow [2024-06-28 01:29:10,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:10,058 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 187 flow [2024-06-28 01:29:10,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 01:29:10,059 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-28 01:29:10,060 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 187 flow [2024-06-28 01:29:10,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:10,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:10,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:10,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:29:10,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:10,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1674648991, now seen corresponding path program 1 times [2024-06-28 01:29:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264073047] [2024-06-28 01:29:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:10,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:10,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:10,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264073047] [2024-06-28 01:29:10,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264073047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:10,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:10,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:29:10,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151793017] [2024-06-28 01:29:10,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:10,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:29:10,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:10,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:29:10,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:29:11,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:29:11,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:11,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:11,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:29:11,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:11,683 INFO L124 PetriNetUnfolderBase]: 3865/6493 cut-off events. [2024-06-28 01:29:11,683 INFO L125 PetriNetUnfolderBase]: For 2607/2607 co-relation queries the response was YES. [2024-06-28 01:29:11,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14606 conditions, 6493 events. 3865/6493 cut-off events. For 2607/2607 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 42575 event pairs, 2658 based on Foata normal form. 3/6269 useless extension candidates. Maximal degree in co-relation 14591. Up to 5520 conditions per place. [2024-06-28 01:29:11,712 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 61 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-06-28 01:29:11,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 417 flow [2024-06-28 01:29:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:29:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:29:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-28 01:29:11,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 01:29:11,718 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 187 flow. Second operand 5 states and 147 transitions. [2024-06-28 01:29:11,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 417 flow [2024-06-28 01:29:11,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 406 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:11,722 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 228 flow [2024-06-28 01:29:11,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-28 01:29:11,723 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-06-28 01:29:11,723 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 228 flow [2024-06-28 01:29:11,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:11,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:11,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:11,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:29:11,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:11,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -374509549, now seen corresponding path program 1 times [2024-06-28 01:29:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120771930] [2024-06-28 01:29:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:12,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120771930] [2024-06-28 01:29:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120771930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:12,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:12,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:29:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664478566] [2024-06-28 01:29:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:12,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:29:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:29:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:29:12,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-28 01:29:12,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:12,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:12,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-28 01:29:12,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:13,505 INFO L124 PetriNetUnfolderBase]: 3864/6327 cut-off events. [2024-06-28 01:29:13,505 INFO L125 PetriNetUnfolderBase]: For 4788/4788 co-relation queries the response was YES. [2024-06-28 01:29:13,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15494 conditions, 6327 events. 3864/6327 cut-off events. For 4788/4788 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40647 event pairs, 1972 based on Foata normal form. 3/6104 useless extension candidates. Maximal degree in co-relation 15477. Up to 5497 conditions per place. [2024-06-28 01:29:13,539 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 71 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-28 01:29:13,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 514 flow [2024-06-28 01:29:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-28 01:29:13,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-28 01:29:13,541 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 228 flow. Second operand 6 states and 175 transitions. [2024-06-28 01:29:13,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 514 flow [2024-06-28 01:29:13,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 488 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:13,545 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 264 flow [2024-06-28 01:29:13,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 01:29:13,546 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-28 01:29:13,546 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 264 flow [2024-06-28 01:29:13,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:13,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:13,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:13,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:29:13,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:13,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:13,547 INFO L85 PathProgramCache]: Analyzing trace with hash 234423497, now seen corresponding path program 1 times [2024-06-28 01:29:13,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:13,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521659491] [2024-06-28 01:29:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:13,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:14,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:14,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521659491] [2024-06-28 01:29:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521659491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:14,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:29:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143000847] [2024-06-28 01:29:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:14,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:29:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:29:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:29:14,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:29:14,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:14,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:14,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:29:14,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:15,046 INFO L124 PetriNetUnfolderBase]: 4952/8335 cut-off events. [2024-06-28 01:29:15,047 INFO L125 PetriNetUnfolderBase]: For 9186/9190 co-relation queries the response was YES. [2024-06-28 01:29:15,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20913 conditions, 8335 events. 4952/8335 cut-off events. For 9186/9190 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 56181 event pairs, 2855 based on Foata normal form. 6/8100 useless extension candidates. Maximal degree in co-relation 20894. Up to 7090 conditions per place. [2024-06-28 01:29:15,082 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 58 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-06-28 01:29:15,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 462 flow [2024-06-28 01:29:15,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:29:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:29:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 01:29:15,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:29:15,084 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 264 flow. Second operand 5 states and 125 transitions. [2024-06-28 01:29:15,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 462 flow [2024-06-28 01:29:15,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 426 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:15,088 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 281 flow [2024-06-28 01:29:15,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-06-28 01:29:15,089 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-06-28 01:29:15,089 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 281 flow [2024-06-28 01:29:15,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:15,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:15,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:15,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:29:15,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:15,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash 873629138, now seen corresponding path program 1 times [2024-06-28 01:29:15,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:15,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409300453] [2024-06-28 01:29:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:15,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409300453] [2024-06-28 01:29:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409300453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:16,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:16,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:16,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903037575] [2024-06-28 01:29:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:16,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:16,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:16,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:29:16,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:16,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:16,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:29:16,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:17,367 INFO L124 PetriNetUnfolderBase]: 4440/6713 cut-off events. [2024-06-28 01:29:17,368 INFO L125 PetriNetUnfolderBase]: For 10855/10855 co-relation queries the response was YES. [2024-06-28 01:29:17,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19230 conditions, 6713 events. 4440/6713 cut-off events. For 10855/10855 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39028 event pairs, 1621 based on Foata normal form. 3/6682 useless extension candidates. Maximal degree in co-relation 19210. Up to 6253 conditions per place. [2024-06-28 01:29:17,403 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 94 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-28 01:29:17,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 138 transitions, 821 flow [2024-06-28 01:29:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-06-28 01:29:17,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739795918367347 [2024-06-28 01:29:17,405 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 281 flow. Second operand 8 states and 225 transitions. [2024-06-28 01:29:17,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 138 transitions, 821 flow [2024-06-28 01:29:17,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 138 transitions, 794 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:17,411 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 509 flow [2024-06-28 01:29:17,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=509, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-28 01:29:17,412 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-28 01:29:17,412 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 509 flow [2024-06-28 01:29:17,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:17,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:17,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:17,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:29:17,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:17,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1293311858, now seen corresponding path program 1 times [2024-06-28 01:29:17,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:17,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951916187] [2024-06-28 01:29:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:18,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:18,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951916187] [2024-06-28 01:29:18,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951916187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:18,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:18,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:18,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472724976] [2024-06-28 01:29:18,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:18,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:18,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:18,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:18,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:18,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:18,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:18,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:18,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:18,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:19,297 INFO L124 PetriNetUnfolderBase]: 5799/9524 cut-off events. [2024-06-28 01:29:19,298 INFO L125 PetriNetUnfolderBase]: For 20288/20298 co-relation queries the response was YES. [2024-06-28 01:29:19,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27676 conditions, 9524 events. 5799/9524 cut-off events. For 20288/20298 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 62909 event pairs, 2596 based on Foata normal form. 16/9251 useless extension candidates. Maximal degree in co-relation 27651. Up to 8155 conditions per place. [2024-06-28 01:29:19,368 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 91 selfloop transitions, 19 changer transitions 0/121 dead transitions. [2024-06-28 01:29:19,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 121 transitions, 887 flow [2024-06-28 01:29:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:29:19,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:29:19,370 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 509 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:29:19,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 121 transitions, 887 flow [2024-06-28 01:29:19,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 121 transitions, 806 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:19,382 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 564 flow [2024-06-28 01:29:19,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2024-06-28 01:29:19,382 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2024-06-28 01:29:19,383 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 564 flow [2024-06-28 01:29:19,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:19,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:19,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:19,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:29:19,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:19,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1952929463, now seen corresponding path program 1 times [2024-06-28 01:29:19,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:19,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794049695] [2024-06-28 01:29:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:19,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:20,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:20,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794049695] [2024-06-28 01:29:20,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794049695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:20,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:20,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303649498] [2024-06-28 01:29:20,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:20,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:20,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:20,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:29:20,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 564 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:20,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:20,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:29:20,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:21,053 INFO L124 PetriNetUnfolderBase]: 5209/8555 cut-off events. [2024-06-28 01:29:21,053 INFO L125 PetriNetUnfolderBase]: For 25547/25572 co-relation queries the response was YES. [2024-06-28 01:29:21,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27638 conditions, 8555 events. 5209/8555 cut-off events. For 25547/25572 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 55902 event pairs, 2033 based on Foata normal form. 11/8297 useless extension candidates. Maximal degree in co-relation 27608. Up to 7365 conditions per place. [2024-06-28 01:29:21,132 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 97 selfloop transitions, 18 changer transitions 0/130 dead transitions. [2024-06-28 01:29:21,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 130 transitions, 975 flow [2024-06-28 01:29:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 01:29:21,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272108843537415 [2024-06-28 01:29:21,134 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 564 flow. Second operand 6 states and 155 transitions. [2024-06-28 01:29:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 130 transitions, 975 flow [2024-06-28 01:29:21,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 130 transitions, 957 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:21,152 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 691 flow [2024-06-28 01:29:21,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=691, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2024-06-28 01:29:21,154 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-28 01:29:21,154 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 691 flow [2024-06-28 01:29:21,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:21,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:21,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:21,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:29:21,157 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:21,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:21,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1407584727, now seen corresponding path program 2 times [2024-06-28 01:29:21,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:21,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125932238] [2024-06-28 01:29:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:21,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:21,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:21,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125932238] [2024-06-28 01:29:21,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125932238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:21,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:21,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:21,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116664636] [2024-06-28 01:29:21,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:21,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:21,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:21,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:29:21,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 691 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:21,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:21,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:29:21,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:22,885 INFO L124 PetriNetUnfolderBase]: 5297/8849 cut-off events. [2024-06-28 01:29:22,885 INFO L125 PetriNetUnfolderBase]: For 31819/31843 co-relation queries the response was YES. [2024-06-28 01:29:22,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29625 conditions, 8849 events. 5297/8849 cut-off events. For 31819/31843 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 59651 event pairs, 2335 based on Foata normal form. 12/8585 useless extension candidates. Maximal degree in co-relation 29591. Up to 7536 conditions per place. [2024-06-28 01:29:22,952 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 95 selfloop transitions, 13 changer transitions 0/123 dead transitions. [2024-06-28 01:29:22,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 123 transitions, 965 flow [2024-06-28 01:29:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:29:22,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:29:22,954 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 691 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:29:22,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 123 transitions, 965 flow [2024-06-28 01:29:22,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 927 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:22,981 INFO L231 Difference]: Finished difference. Result has 92 places, 100 transitions, 687 flow [2024-06-28 01:29:22,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=92, PETRI_TRANSITIONS=100} [2024-06-28 01:29:22,983 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2024-06-28 01:29:22,983 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 100 transitions, 687 flow [2024-06-28 01:29:22,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:22,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:22,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:22,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:29:22,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:22,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1312701215, now seen corresponding path program 1 times [2024-06-28 01:29:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:22,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429638358] [2024-06-28 01:29:22,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:22,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:24,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:24,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429638358] [2024-06-28 01:29:24,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429638358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:24,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:24,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:24,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924259936] [2024-06-28 01:29:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:24,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:24,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:24,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:24,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-28 01:29:24,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 100 transitions, 687 flow. Second operand has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 9 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:24,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:24,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-28 01:29:24,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:25,683 INFO L124 PetriNetUnfolderBase]: 4614/6950 cut-off events. [2024-06-28 01:29:25,684 INFO L125 PetriNetUnfolderBase]: For 30570/30584 co-relation queries the response was YES. [2024-06-28 01:29:25,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25846 conditions, 6950 events. 4614/6950 cut-off events. For 30570/30584 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40527 event pairs, 1271 based on Foata normal form. 6/6875 useless extension candidates. Maximal degree in co-relation 25810. Up to 6418 conditions per place. [2024-06-28 01:29:25,728 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 119 selfloop transitions, 35 changer transitions 0/168 dead transitions. [2024-06-28 01:29:25,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 168 transitions, 1199 flow [2024-06-28 01:29:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-28 01:29:25,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562358276643991 [2024-06-28 01:29:25,733 INFO L175 Difference]: Start difference. First operand has 92 places, 100 transitions, 687 flow. Second operand 9 states and 248 transitions. [2024-06-28 01:29:25,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 168 transitions, 1199 flow [2024-06-28 01:29:25,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 1156 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:25,760 INFO L231 Difference]: Finished difference. Result has 95 places, 101 transitions, 745 flow [2024-06-28 01:29:25,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=745, PETRI_PLACES=95, PETRI_TRANSITIONS=101} [2024-06-28 01:29:25,760 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-28 01:29:25,760 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 101 transitions, 745 flow [2024-06-28 01:29:25,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 9 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:25,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:25,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:25,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:29:25,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:25,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash -170486636, now seen corresponding path program 1 times [2024-06-28 01:29:25,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:25,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712168179] [2024-06-28 01:29:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:25,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712168179] [2024-06-28 01:29:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712168179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:26,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:26,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590535652] [2024-06-28 01:29:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:26,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:26,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:26,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:26,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 101 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:26,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:26,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:26,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:27,608 INFO L124 PetriNetUnfolderBase]: 5465/8630 cut-off events. [2024-06-28 01:29:27,608 INFO L125 PetriNetUnfolderBase]: For 40702/40725 co-relation queries the response was YES. [2024-06-28 01:29:27,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31294 conditions, 8630 events. 5465/8630 cut-off events. For 40702/40725 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 54171 event pairs, 1916 based on Foata normal form. 8/8388 useless extension candidates. Maximal degree in co-relation 31258. Up to 7635 conditions per place. [2024-06-28 01:29:27,679 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 110 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-28 01:29:27,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 148 transitions, 1233 flow [2024-06-28 01:29:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:29:27,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-28 01:29:27,681 INFO L175 Difference]: Start difference. First operand has 95 places, 101 transitions, 745 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:29:27,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 148 transitions, 1233 flow [2024-06-28 01:29:27,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 148 transitions, 1138 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:27,714 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 784 flow [2024-06-28 01:29:27,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=784, PETRI_PLACES=95, PETRI_TRANSITIONS=107} [2024-06-28 01:29:27,715 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-28 01:29:27,715 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 784 flow [2024-06-28 01:29:27,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:27,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:27,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:27,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:29:27,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:27,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash 411272446, now seen corresponding path program 1 times [2024-06-28 01:29:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:27,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117858462] [2024-06-28 01:29:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:28,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:28,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117858462] [2024-06-28 01:29:28,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117858462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:28,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:28,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:28,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826219595] [2024-06-28 01:29:28,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:28,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:28,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:28,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:28,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:28,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:28,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 107 transitions, 784 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:28,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:28,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:28,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:29,640 INFO L124 PetriNetUnfolderBase]: 6056/9479 cut-off events. [2024-06-28 01:29:29,641 INFO L125 PetriNetUnfolderBase]: For 53753/53758 co-relation queries the response was YES. [2024-06-28 01:29:29,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35357 conditions, 9479 events. 6056/9479 cut-off events. For 53753/53758 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 59275 event pairs, 2070 based on Foata normal form. 11/9254 useless extension candidates. Maximal degree in co-relation 35319. Up to 8275 conditions per place. [2024-06-28 01:29:29,718 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 131 selfloop transitions, 31 changer transitions 0/175 dead transitions. [2024-06-28 01:29:29,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 175 transitions, 1510 flow [2024-06-28 01:29:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:29:29,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-28 01:29:29,719 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 784 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:29:29,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 175 transitions, 1510 flow [2024-06-28 01:29:29,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 175 transitions, 1456 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:29,767 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 1006 flow [2024-06-28 01:29:29,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1006, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2024-06-28 01:29:29,768 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-28 01:29:29,768 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 1006 flow [2024-06-28 01:29:29,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:29,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:29,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:29,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:29:29,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:29,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -170307146, now seen corresponding path program 2 times [2024-06-28 01:29:29,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602445475] [2024-06-28 01:29:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:30,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:30,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602445475] [2024-06-28 01:29:30,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602445475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:30,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:30,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:30,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453454773] [2024-06-28 01:29:30,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:30,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:30,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:30,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:30,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 1006 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:30,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:30,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:30,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:31,739 INFO L124 PetriNetUnfolderBase]: 5747/9079 cut-off events. [2024-06-28 01:29:31,739 INFO L125 PetriNetUnfolderBase]: For 63300/63382 co-relation queries the response was YES. [2024-06-28 01:29:31,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37448 conditions, 9079 events. 5747/9079 cut-off events. For 63300/63382 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 57112 event pairs, 1860 based on Foata normal form. 9/8806 useless extension candidates. Maximal degree in co-relation 37405. Up to 7958 conditions per place. [2024-06-28 01:29:31,815 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 122 selfloop transitions, 28 changer transitions 0/168 dead transitions. [2024-06-28 01:29:31,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 168 transitions, 1494 flow [2024-06-28 01:29:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:29:31,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072886297376094 [2024-06-28 01:29:31,818 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 1006 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:29:31,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 168 transitions, 1494 flow [2024-06-28 01:29:31,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 168 transitions, 1448 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:31,886 INFO L231 Difference]: Finished difference. Result has 108 places, 130 transitions, 1058 flow [2024-06-28 01:29:31,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1058, PETRI_PLACES=108, PETRI_TRANSITIONS=130} [2024-06-28 01:29:31,887 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-28 01:29:31,887 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 130 transitions, 1058 flow [2024-06-28 01:29:31,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:31,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:31,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:31,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:29:31,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:31,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:31,888 INFO L85 PathProgramCache]: Analyzing trace with hash -685126840, now seen corresponding path program 2 times [2024-06-28 01:29:31,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:31,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389801932] [2024-06-28 01:29:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:31,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:32,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:32,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389801932] [2024-06-28 01:29:32,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389801932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:32,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:32,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:32,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843509090] [2024-06-28 01:29:32,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:32,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:32,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:32,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:32,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:32,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:32,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 130 transitions, 1058 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:32,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:32,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:32,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:34,012 INFO L124 PetriNetUnfolderBase]: 6152/9829 cut-off events. [2024-06-28 01:29:34,012 INFO L125 PetriNetUnfolderBase]: For 74072/74082 co-relation queries the response was YES. [2024-06-28 01:29:34,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40263 conditions, 9829 events. 6152/9829 cut-off events. For 74072/74082 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 63510 event pairs, 2417 based on Foata normal form. 16/9602 useless extension candidates. Maximal degree in co-relation 40217. Up to 8652 conditions per place. [2024-06-28 01:29:34,098 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 132 selfloop transitions, 26 changer transitions 0/172 dead transitions. [2024-06-28 01:29:34,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 172 transitions, 1606 flow [2024-06-28 01:29:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:34,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:29:34,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-28 01:29:34,101 INFO L175 Difference]: Start difference. First operand has 108 places, 130 transitions, 1058 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:29:34,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 172 transitions, 1606 flow [2024-06-28 01:29:34,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 172 transitions, 1544 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:34,168 INFO L231 Difference]: Finished difference. Result has 114 places, 140 transitions, 1195 flow [2024-06-28 01:29:34,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1195, PETRI_PLACES=114, PETRI_TRANSITIONS=140} [2024-06-28 01:29:34,169 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-28 01:29:34,169 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 140 transitions, 1195 flow [2024-06-28 01:29:34,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:34,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:34,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:34,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:29:34,170 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:34,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:34,170 INFO L85 PathProgramCache]: Analyzing trace with hash -163820148, now seen corresponding path program 3 times [2024-06-28 01:29:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:34,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816635504] [2024-06-28 01:29:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:34,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:34,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:34,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816635504] [2024-06-28 01:29:34,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816635504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:34,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:34,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:34,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182595322] [2024-06-28 01:29:34,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:34,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:34,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:35,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:35,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 140 transitions, 1195 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:35,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:35,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:35,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:36,183 INFO L124 PetriNetUnfolderBase]: 6180/9859 cut-off events. [2024-06-28 01:29:36,183 INFO L125 PetriNetUnfolderBase]: For 81448/81458 co-relation queries the response was YES. [2024-06-28 01:29:36,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41266 conditions, 9859 events. 6180/9859 cut-off events. For 81448/81458 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 63556 event pairs, 2410 based on Foata normal form. 16/9634 useless extension candidates. Maximal degree in co-relation 41216. Up to 8552 conditions per place. [2024-06-28 01:29:36,286 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 137 selfloop transitions, 32 changer transitions 0/183 dead transitions. [2024-06-28 01:29:36,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 183 transitions, 1800 flow [2024-06-28 01:29:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:36,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:36,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:29:36,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:29:36,287 INFO L175 Difference]: Start difference. First operand has 114 places, 140 transitions, 1195 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:29:36,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 183 transitions, 1800 flow [2024-06-28 01:29:36,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 183 transitions, 1729 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:36,365 INFO L231 Difference]: Finished difference. Result has 119 places, 147 transitions, 1304 flow [2024-06-28 01:29:36,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1304, PETRI_PLACES=119, PETRI_TRANSITIONS=147} [2024-06-28 01:29:36,366 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-28 01:29:36,366 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 147 transitions, 1304 flow [2024-06-28 01:29:36,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:36,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:36,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:36,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:29:36,367 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:36,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1627444008, now seen corresponding path program 3 times [2024-06-28 01:29:36,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:36,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093425770] [2024-06-28 01:29:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:36,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:37,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:37,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093425770] [2024-06-28 01:29:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093425770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:37,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:37,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832794196] [2024-06-28 01:29:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:37,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:37,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:37,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:37,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:37,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 147 transitions, 1304 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:37,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:37,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:37,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:38,429 INFO L124 PetriNetUnfolderBase]: 5941/9482 cut-off events. [2024-06-28 01:29:38,429 INFO L125 PetriNetUnfolderBase]: For 83579/83652 co-relation queries the response was YES. [2024-06-28 01:29:38,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40597 conditions, 9482 events. 5941/9482 cut-off events. For 83579/83652 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 61084 event pairs, 2159 based on Foata normal form. 4/9201 useless extension candidates. Maximal degree in co-relation 40545. Up to 8315 conditions per place. [2024-06-28 01:29:38,510 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 140 selfloop transitions, 18 changer transitions 0/179 dead transitions. [2024-06-28 01:29:38,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1726 flow [2024-06-28 01:29:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 01:29:38,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45153061224489793 [2024-06-28 01:29:38,511 INFO L175 Difference]: Start difference. First operand has 119 places, 147 transitions, 1304 flow. Second operand 8 states and 177 transitions. [2024-06-28 01:29:38,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1726 flow [2024-06-28 01:29:38,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 179 transitions, 1647 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:38,583 INFO L231 Difference]: Finished difference. Result has 125 places, 149 transitions, 1298 flow [2024-06-28 01:29:38,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1298, PETRI_PLACES=125, PETRI_TRANSITIONS=149} [2024-06-28 01:29:38,584 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-28 01:29:38,584 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 149 transitions, 1298 flow [2024-06-28 01:29:38,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:38,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:38,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:38,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:29:38,585 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:38,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1627106387, now seen corresponding path program 1 times [2024-06-28 01:29:38,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:38,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089287004] [2024-06-28 01:29:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:38,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:39,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:39,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089287004] [2024-06-28 01:29:39,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089287004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:39,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:39,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:39,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602944273] [2024-06-28 01:29:39,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:39,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:39,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:39,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:39,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:39,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:39,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 149 transitions, 1298 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:39,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:39,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:39,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:41,407 INFO L124 PetriNetUnfolderBase]: 6198/9915 cut-off events. [2024-06-28 01:29:41,407 INFO L125 PetriNetUnfolderBase]: For 94295/94305 co-relation queries the response was YES. [2024-06-28 01:29:41,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42504 conditions, 9915 events. 6198/9915 cut-off events. For 94295/94305 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 64278 event pairs, 2359 based on Foata normal form. 16/9681 useless extension candidates. Maximal degree in co-relation 42449. Up to 8638 conditions per place. [2024-06-28 01:29:41,479 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 141 selfloop transitions, 35 changer transitions 0/190 dead transitions. [2024-06-28 01:29:41,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 190 transitions, 1864 flow [2024-06-28 01:29:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:29:41,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-28 01:29:41,481 INFO L175 Difference]: Start difference. First operand has 125 places, 149 transitions, 1298 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:29:41,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 190 transitions, 1864 flow [2024-06-28 01:29:41,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 190 transitions, 1801 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:41,545 INFO L231 Difference]: Finished difference. Result has 126 places, 152 transitions, 1361 flow [2024-06-28 01:29:41,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1361, PETRI_PLACES=126, PETRI_TRANSITIONS=152} [2024-06-28 01:29:41,546 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2024-06-28 01:29:41,546 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 152 transitions, 1361 flow [2024-06-28 01:29:41,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:41,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:41,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:41,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:29:41,547 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:41,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -633730909, now seen corresponding path program 1 times [2024-06-28 01:29:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:41,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420934834] [2024-06-28 01:29:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:42,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:42,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420934834] [2024-06-28 01:29:42,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420934834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:42,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:42,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:29:42,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787755880] [2024-06-28 01:29:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:29:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:42,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:29:42,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:29:42,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:29:42,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 152 transitions, 1361 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:42,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:42,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:29:42,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:43,303 INFO L124 PetriNetUnfolderBase]: 5889/9587 cut-off events. [2024-06-28 01:29:43,304 INFO L125 PetriNetUnfolderBase]: For 102192/102204 co-relation queries the response was YES. [2024-06-28 01:29:43,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42754 conditions, 9587 events. 5889/9587 cut-off events. For 102192/102204 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 63623 event pairs, 2424 based on Foata normal form. 13/9352 useless extension candidates. Maximal degree in co-relation 42698. Up to 8485 conditions per place. [2024-06-28 01:29:43,384 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 134 selfloop transitions, 15 changer transitions 0/165 dead transitions. [2024-06-28 01:29:43,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 165 transitions, 1689 flow [2024-06-28 01:29:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:29:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:29:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:29:43,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:29:43,386 INFO L175 Difference]: Start difference. First operand has 126 places, 152 transitions, 1361 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:29:43,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 165 transitions, 1689 flow [2024-06-28 01:29:43,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 165 transitions, 1570 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:43,457 INFO L231 Difference]: Finished difference. Result has 125 places, 152 transitions, 1282 flow [2024-06-28 01:29:43,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=125, PETRI_TRANSITIONS=152} [2024-06-28 01:29:43,458 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-28 01:29:43,458 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 152 transitions, 1282 flow [2024-06-28 01:29:43,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:43,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:43,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:43,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:29:43,459 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:43,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash -990267130, now seen corresponding path program 1 times [2024-06-28 01:29:43,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:43,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277181178] [2024-06-28 01:29:43,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:43,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:44,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:44,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277181178] [2024-06-28 01:29:44,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277181178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:44,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:44,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:44,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171515928] [2024-06-28 01:29:44,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:44,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:44,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:44,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:44,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:44,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:44,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 152 transitions, 1282 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:44,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:44,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:44,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:45,644 INFO L124 PetriNetUnfolderBase]: 5897/9308 cut-off events. [2024-06-28 01:29:45,645 INFO L125 PetriNetUnfolderBase]: For 103957/104030 co-relation queries the response was YES. [2024-06-28 01:29:45,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42041 conditions, 9308 events. 5897/9308 cut-off events. For 103957/104030 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 58869 event pairs, 1844 based on Foata normal form. 15/9048 useless extension candidates. Maximal degree in co-relation 41985. Up to 8061 conditions per place. [2024-06-28 01:29:45,721 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 150 selfloop transitions, 38 changer transitions 0/210 dead transitions. [2024-06-28 01:29:45,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 210 transitions, 1980 flow [2024-06-28 01:29:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:29:45,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:29:45,723 INFO L175 Difference]: Start difference. First operand has 125 places, 152 transitions, 1282 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:29:45,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 210 transitions, 1980 flow [2024-06-28 01:29:45,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 210 transitions, 1946 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:45,808 INFO L231 Difference]: Finished difference. Result has 131 places, 159 transitions, 1452 flow [2024-06-28 01:29:45,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1452, PETRI_PLACES=131, PETRI_TRANSITIONS=159} [2024-06-28 01:29:45,808 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-28 01:29:45,808 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 159 transitions, 1452 flow [2024-06-28 01:29:45,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:45,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:45,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:45,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:29:45,809 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:45,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash -990117400, now seen corresponding path program 2 times [2024-06-28 01:29:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884007106] [2024-06-28 01:29:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:45,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:46,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:46,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884007106] [2024-06-28 01:29:46,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884007106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:46,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:46,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:46,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306545794] [2024-06-28 01:29:46,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:46,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:46,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:46,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:46,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 159 transitions, 1452 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:46,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:46,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:46,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:47,973 INFO L124 PetriNetUnfolderBase]: 5920/9355 cut-off events. [2024-06-28 01:29:47,973 INFO L125 PetriNetUnfolderBase]: For 116242/116315 co-relation queries the response was YES. [2024-06-28 01:29:48,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43795 conditions, 9355 events. 5920/9355 cut-off events. For 116242/116315 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 59174 event pairs, 1846 based on Foata normal form. 15/9090 useless extension candidates. Maximal degree in co-relation 43737. Up to 8085 conditions per place. [2024-06-28 01:29:48,058 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 149 selfloop transitions, 39 changer transitions 0/210 dead transitions. [2024-06-28 01:29:48,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 210 transitions, 2099 flow [2024-06-28 01:29:48,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:29:48,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-06-28 01:29:48,060 INFO L175 Difference]: Start difference. First operand has 131 places, 159 transitions, 1452 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:29:48,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 210 transitions, 2099 flow [2024-06-28 01:29:48,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 210 transitions, 1993 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:48,157 INFO L231 Difference]: Finished difference. Result has 135 places, 162 transitions, 1489 flow [2024-06-28 01:29:48,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1489, PETRI_PLACES=135, PETRI_TRANSITIONS=162} [2024-06-28 01:29:48,157 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-28 01:29:48,157 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 162 transitions, 1489 flow [2024-06-28 01:29:48,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:48,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:48,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:48,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:29:48,158 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:48,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:48,158 INFO L85 PathProgramCache]: Analyzing trace with hash -990117183, now seen corresponding path program 1 times [2024-06-28 01:29:48,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861795830] [2024-06-28 01:29:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:48,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:49,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:49,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861795830] [2024-06-28 01:29:49,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861795830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:49,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:49,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:49,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639935161] [2024-06-28 01:29:49,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:49,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:49,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:49,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:49,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:29:49,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 162 transitions, 1489 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:49,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:49,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:29:49,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:50,546 INFO L124 PetriNetUnfolderBase]: 7078/10874 cut-off events. [2024-06-28 01:29:50,546 INFO L125 PetriNetUnfolderBase]: For 135923/135926 co-relation queries the response was YES. [2024-06-28 01:29:50,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51481 conditions, 10874 events. 7078/10874 cut-off events. For 135923/135926 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 66919 event pairs, 2152 based on Foata normal form. 8/10632 useless extension candidates. Maximal degree in co-relation 51421. Up to 9171 conditions per place. [2024-06-28 01:29:50,647 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 188 selfloop transitions, 57 changer transitions 0/253 dead transitions. [2024-06-28 01:29:50,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 253 transitions, 2760 flow [2024-06-28 01:29:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 01:29:50,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:29:50,648 INFO L175 Difference]: Start difference. First operand has 135 places, 162 transitions, 1489 flow. Second operand 9 states and 216 transitions. [2024-06-28 01:29:50,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 253 transitions, 2760 flow [2024-06-28 01:29:50,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 253 transitions, 2656 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:50,957 INFO L231 Difference]: Finished difference. Result has 142 places, 189 transitions, 1880 flow [2024-06-28 01:29:50,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1880, PETRI_PLACES=142, PETRI_TRANSITIONS=189} [2024-06-28 01:29:50,958 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 87 predicate places. [2024-06-28 01:29:50,958 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 189 transitions, 1880 flow [2024-06-28 01:29:50,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:50,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:50,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:50,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:29:50,958 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:50,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:50,959 INFO L85 PathProgramCache]: Analyzing trace with hash -984552993, now seen corresponding path program 2 times [2024-06-28 01:29:50,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:50,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501164855] [2024-06-28 01:29:50,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:50,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501164855] [2024-06-28 01:29:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501164855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:51,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:51,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793836036] [2024-06-28 01:29:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:51,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:51,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:29:51,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 189 transitions, 1880 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:51,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:51,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:29:51,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:53,388 INFO L124 PetriNetUnfolderBase]: 7546/11496 cut-off events. [2024-06-28 01:29:53,388 INFO L125 PetriNetUnfolderBase]: For 169887/169890 co-relation queries the response was YES. [2024-06-28 01:29:53,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59243 conditions, 11496 events. 7546/11496 cut-off events. For 169887/169890 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 70287 event pairs, 2066 based on Foata normal form. 14/11262 useless extension candidates. Maximal degree in co-relation 59179. Up to 9160 conditions per place. [2024-06-28 01:29:53,490 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 178 selfloop transitions, 82 changer transitions 0/268 dead transitions. [2024-06-28 01:29:53,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 268 transitions, 3220 flow [2024-06-28 01:29:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:29:53,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-28 01:29:53,492 INFO L175 Difference]: Start difference. First operand has 142 places, 189 transitions, 1880 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:29:53,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 268 transitions, 3220 flow [2024-06-28 01:29:53,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 268 transitions, 3123 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:53,696 INFO L231 Difference]: Finished difference. Result has 150 places, 209 transitions, 2255 flow [2024-06-28 01:29:53,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2255, PETRI_PLACES=150, PETRI_TRANSITIONS=209} [2024-06-28 01:29:53,697 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 95 predicate places. [2024-06-28 01:29:53,697 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 209 transitions, 2255 flow [2024-06-28 01:29:53,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:53,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:53,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:29:53,698 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:53,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash -135462730, now seen corresponding path program 3 times [2024-06-28 01:29:53,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:53,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4587102] [2024-06-28 01:29:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:53,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:54,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4587102] [2024-06-28 01:29:54,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4587102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:54,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:54,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:54,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283372140] [2024-06-28 01:29:54,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:54,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:54,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:54,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:29:54,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 209 transitions, 2255 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:54,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:54,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:29:54,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:56,116 INFO L124 PetriNetUnfolderBase]: 6989/10943 cut-off events. [2024-06-28 01:29:56,116 INFO L125 PetriNetUnfolderBase]: For 185846/185991 co-relation queries the response was YES. [2024-06-28 01:29:56,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59479 conditions, 10943 events. 6989/10943 cut-off events. For 185846/185991 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 69507 event pairs, 1954 based on Foata normal form. 28/10655 useless extension candidates. Maximal degree in co-relation 59411. Up to 9297 conditions per place. [2024-06-28 01:29:56,231 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 178 selfloop transitions, 45 changer transitions 0/257 dead transitions. [2024-06-28 01:29:56,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 257 transitions, 2963 flow [2024-06-28 01:29:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:29:56,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-06-28 01:29:56,234 INFO L175 Difference]: Start difference. First operand has 150 places, 209 transitions, 2255 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:29:56,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 257 transitions, 2963 flow [2024-06-28 01:29:56,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 257 transitions, 2850 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:56,518 INFO L231 Difference]: Finished difference. Result has 156 places, 212 transitions, 2287 flow [2024-06-28 01:29:56,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2287, PETRI_PLACES=156, PETRI_TRANSITIONS=212} [2024-06-28 01:29:56,519 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 101 predicate places. [2024-06-28 01:29:56,520 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 212 transitions, 2287 flow [2024-06-28 01:29:56,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:56,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:56,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:56,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:29:56,520 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:56,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:56,521 INFO L85 PathProgramCache]: Analyzing trace with hash -135455073, now seen corresponding path program 3 times [2024-06-28 01:29:56,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:56,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752529496] [2024-06-28 01:29:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:56,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:57,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:57,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752529496] [2024-06-28 01:29:57,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752529496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:57,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:57,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:57,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910138632] [2024-06-28 01:29:57,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:57,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:57,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:57,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:57,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:57,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:29:57,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 212 transitions, 2287 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:57,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:57,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:29:57,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:59,044 INFO L124 PetriNetUnfolderBase]: 7665/11661 cut-off events. [2024-06-28 01:29:59,045 INFO L125 PetriNetUnfolderBase]: For 191146/191149 co-relation queries the response was YES. [2024-06-28 01:29:59,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61987 conditions, 11661 events. 7665/11661 cut-off events. For 191146/191149 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 71291 event pairs, 2034 based on Foata normal form. 14/11426 useless extension candidates. Maximal degree in co-relation 61917. Up to 9285 conditions per place. [2024-06-28 01:29:59,149 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 174 selfloop transitions, 97 changer transitions 0/279 dead transitions. [2024-06-28 01:29:59,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 279 transitions, 3488 flow [2024-06-28 01:29:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:59,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:29:59,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280612244897959 [2024-06-28 01:29:59,150 INFO L175 Difference]: Start difference. First operand has 156 places, 212 transitions, 2287 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:29:59,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 279 transitions, 3488 flow [2024-06-28 01:29:59,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 279 transitions, 3393 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:59,390 INFO L231 Difference]: Finished difference. Result has 161 places, 224 transitions, 2651 flow [2024-06-28 01:29:59,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2651, PETRI_PLACES=161, PETRI_TRANSITIONS=224} [2024-06-28 01:29:59,390 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2024-06-28 01:29:59,390 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 224 transitions, 2651 flow [2024-06-28 01:29:59,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:59,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:59,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:59,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:29:59,391 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:59,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:59,391 INFO L85 PathProgramCache]: Analyzing trace with hash -714293425, now seen corresponding path program 4 times [2024-06-28 01:29:59,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:59,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016581502] [2024-06-28 01:29:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:59,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:00,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:00,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016581502] [2024-06-28 01:30:00,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016581502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:00,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:00,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:00,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47692205] [2024-06-28 01:30:00,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:00,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:00,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:30:00,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 224 transitions, 2651 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:00,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:00,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:30:00,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:02,061 INFO L124 PetriNetUnfolderBase]: 7749/11730 cut-off events. [2024-06-28 01:30:02,062 INFO L125 PetriNetUnfolderBase]: For 219496/219496 co-relation queries the response was YES. [2024-06-28 01:30:02,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66008 conditions, 11730 events. 7749/11730 cut-off events. For 219496/219496 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 71901 event pairs, 2673 based on Foata normal form. 6/11547 useless extension candidates. Maximal degree in co-relation 65935. Up to 10445 conditions per place. [2024-06-28 01:30:02,180 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 229 selfloop transitions, 40 changer transitions 0/277 dead transitions. [2024-06-28 01:30:02,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 277 transitions, 3673 flow [2024-06-28 01:30:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:30:02,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2024-06-28 01:30:02,182 INFO L175 Difference]: Start difference. First operand has 161 places, 224 transitions, 2651 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:30:02,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 277 transitions, 3673 flow [2024-06-28 01:30:02,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 277 transitions, 3479 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:02,567 INFO L231 Difference]: Finished difference. Result has 166 places, 231 transitions, 2694 flow [2024-06-28 01:30:02,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2694, PETRI_PLACES=166, PETRI_TRANSITIONS=231} [2024-06-28 01:30:02,568 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 111 predicate places. [2024-06-28 01:30:02,568 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 231 transitions, 2694 flow [2024-06-28 01:30:02,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:02,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:02,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:02,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:30:02,569 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:02,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1088844324, now seen corresponding path program 4 times [2024-06-28 01:30:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282150091] [2024-06-28 01:30:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:02,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:03,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:03,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282150091] [2024-06-28 01:30:03,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282150091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:03,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:03,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559584385] [2024-06-28 01:30:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:03,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:03,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:03,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:30:03,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 231 transitions, 2694 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:03,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:03,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:30:03,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:05,083 INFO L124 PetriNetUnfolderBase]: 7116/11075 cut-off events. [2024-06-28 01:30:05,083 INFO L125 PetriNetUnfolderBase]: For 215313/215422 co-relation queries the response was YES. [2024-06-28 01:30:05,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61204 conditions, 11075 events. 7116/11075 cut-off events. For 215313/215422 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 70490 event pairs, 2440 based on Foata normal form. 32/10856 useless extension candidates. Maximal degree in co-relation 61129. Up to 9746 conditions per place. [2024-06-28 01:30:05,202 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 210 selfloop transitions, 20 changer transitions 0/269 dead transitions. [2024-06-28 01:30:05,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 269 transitions, 3260 flow [2024-06-28 01:30:05,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:30:05,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4770408163265306 [2024-06-28 01:30:05,204 INFO L175 Difference]: Start difference. First operand has 166 places, 231 transitions, 2694 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:30:05,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 269 transitions, 3260 flow [2024-06-28 01:30:05,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 269 transitions, 3144 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:05,538 INFO L231 Difference]: Finished difference. Result has 170 places, 231 transitions, 2626 flow [2024-06-28 01:30:05,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2626, PETRI_PLACES=170, PETRI_TRANSITIONS=231} [2024-06-28 01:30:05,539 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 115 predicate places. [2024-06-28 01:30:05,539 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 231 transitions, 2626 flow [2024-06-28 01:30:05,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:05,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:05,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:30:05,540 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:05,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1088851981, now seen corresponding path program 5 times [2024-06-28 01:30:05,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:05,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143701518] [2024-06-28 01:30:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:05,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:06,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:06,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143701518] [2024-06-28 01:30:06,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143701518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:06,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:06,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:06,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729122107] [2024-06-28 01:30:06,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:06,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:06,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:06,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:06,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:30:06,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 231 transitions, 2626 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:06,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:06,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:30:06,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:08,216 INFO L124 PetriNetUnfolderBase]: 7828/11853 cut-off events. [2024-06-28 01:30:08,216 INFO L125 PetriNetUnfolderBase]: For 230820/230820 co-relation queries the response was YES. [2024-06-28 01:30:08,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65975 conditions, 11853 events. 7828/11853 cut-off events. For 230820/230820 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 72660 event pairs, 2698 based on Foata normal form. 6/11666 useless extension candidates. Maximal degree in co-relation 65898. Up to 10500 conditions per place. [2024-06-28 01:30:08,348 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 228 selfloop transitions, 44 changer transitions 0/280 dead transitions. [2024-06-28 01:30:08,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 280 transitions, 3571 flow [2024-06-28 01:30:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:30:08,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2024-06-28 01:30:08,350 INFO L175 Difference]: Start difference. First operand has 170 places, 231 transitions, 2626 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:30:08,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 280 transitions, 3571 flow [2024-06-28 01:30:08,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 280 transitions, 3529 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:08,648 INFO L231 Difference]: Finished difference. Result has 172 places, 235 transitions, 2764 flow [2024-06-28 01:30:08,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2764, PETRI_PLACES=172, PETRI_TRANSITIONS=235} [2024-06-28 01:30:08,649 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-28 01:30:08,649 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 235 transitions, 2764 flow [2024-06-28 01:30:08,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:08,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:08,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:08,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:30:08,650 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:08,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:08,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1356373325, now seen corresponding path program 6 times [2024-06-28 01:30:08,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:08,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216424644] [2024-06-28 01:30:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:08,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:09,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216424644] [2024-06-28 01:30:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216424644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:09,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:09,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367569530] [2024-06-28 01:30:09,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:09,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:09,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:30:09,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 235 transitions, 2764 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:09,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:09,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:30:09,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:11,277 INFO L124 PetriNetUnfolderBase]: 7856/11887 cut-off events. [2024-06-28 01:30:11,277 INFO L125 PetriNetUnfolderBase]: For 245381/245381 co-relation queries the response was YES. [2024-06-28 01:30:11,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67210 conditions, 11887 events. 7856/11887 cut-off events. For 245381/245381 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 72819 event pairs, 2719 based on Foata normal form. 6/11702 useless extension candidates. Maximal degree in co-relation 67132. Up to 10904 conditions per place. [2024-06-28 01:30:11,412 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 239 selfloop transitions, 31 changer transitions 0/278 dead transitions. [2024-06-28 01:30:11,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 278 transitions, 3553 flow [2024-06-28 01:30:11,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:11,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:30:11,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-28 01:30:11,414 INFO L175 Difference]: Start difference. First operand has 172 places, 235 transitions, 2764 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:30:11,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 278 transitions, 3553 flow [2024-06-28 01:30:11,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 278 transitions, 3439 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:11,745 INFO L231 Difference]: Finished difference. Result has 175 places, 239 transitions, 2818 flow [2024-06-28 01:30:11,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2818, PETRI_PLACES=175, PETRI_TRANSITIONS=239} [2024-06-28 01:30:11,746 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 120 predicate places. [2024-06-28 01:30:11,746 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 239 transitions, 2818 flow [2024-06-28 01:30:11,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:11,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:11,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:11,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:30:11,747 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:11,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1356363746, now seen corresponding path program 1 times [2024-06-28 01:30:11,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:11,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742662775] [2024-06-28 01:30:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:12,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:12,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742662775] [2024-06-28 01:30:12,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742662775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:12,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:12,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:12,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175326889] [2024-06-28 01:30:12,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:12,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:12,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:12,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:30:12,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 239 transitions, 2818 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:12,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:12,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:30:12,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:14,577 INFO L124 PetriNetUnfolderBase]: 7495/11559 cut-off events. [2024-06-28 01:30:14,578 INFO L125 PetriNetUnfolderBase]: For 253433/253499 co-relation queries the response was YES. [2024-06-28 01:30:14,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64672 conditions, 11559 events. 7495/11559 cut-off events. For 253433/253499 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 73224 event pairs, 2649 based on Foata normal form. 58/11414 useless extension candidates. Maximal degree in co-relation 64593. Up to 10140 conditions per place. [2024-06-28 01:30:14,717 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 208 selfloop transitions, 39 changer transitions 0/280 dead transitions. [2024-06-28 01:30:14,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 280 transitions, 3550 flow [2024-06-28 01:30:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:30:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:30:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:30:14,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:30:14,718 INFO L175 Difference]: Start difference. First operand has 175 places, 239 transitions, 2818 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:30:14,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 280 transitions, 3550 flow [2024-06-28 01:30:15,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 280 transitions, 3445 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:15,126 INFO L231 Difference]: Finished difference. Result has 176 places, 243 transitions, 2887 flow [2024-06-28 01:30:15,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2887, PETRI_PLACES=176, PETRI_TRANSITIONS=243} [2024-06-28 01:30:15,127 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 121 predicate places. [2024-06-28 01:30:15,127 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 243 transitions, 2887 flow [2024-06-28 01:30:15,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:15,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:15,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:15,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:30:15,128 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:15,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1570747157, now seen corresponding path program 7 times [2024-06-28 01:30:15,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:15,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573734409] [2024-06-28 01:30:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:15,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:15,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:15,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573734409] [2024-06-28 01:30:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573734409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:15,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:15,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:15,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334022749] [2024-06-28 01:30:15,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:15,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:15,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:15,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:15,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:30:15,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 243 transitions, 2887 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:15,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:15,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:30:15,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:18,406 INFO L124 PetriNetUnfolderBase]: 9313/15038 cut-off events. [2024-06-28 01:30:18,406 INFO L125 PetriNetUnfolderBase]: For 299222/299237 co-relation queries the response was YES. [2024-06-28 01:30:18,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82703 conditions, 15038 events. 9313/15038 cut-off events. For 299222/299237 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 102684 event pairs, 2387 based on Foata normal form. 20/14586 useless extension candidates. Maximal degree in co-relation 82623. Up to 11381 conditions per place. [2024-06-28 01:30:18,534 INFO L140 encePairwiseOnDemand]: 32/49 looper letters, 329 selfloop transitions, 164 changer transitions 0/501 dead transitions. [2024-06-28 01:30:18,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 501 transitions, 6960 flow [2024-06-28 01:30:18,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:30:18,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260770975056689 [2024-06-28 01:30:18,545 INFO L175 Difference]: Start difference. First operand has 176 places, 243 transitions, 2887 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:30:18,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 501 transitions, 6960 flow [2024-06-28 01:30:18,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 501 transitions, 6829 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:18,937 INFO L231 Difference]: Finished difference. Result has 184 places, 389 transitions, 5346 flow [2024-06-28 01:30:18,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5346, PETRI_PLACES=184, PETRI_TRANSITIONS=389} [2024-06-28 01:30:18,938 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 129 predicate places. [2024-06-28 01:30:18,938 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 389 transitions, 5346 flow [2024-06-28 01:30:18,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:18,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:18,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:18,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:30:18,938 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:18,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 937315461, now seen corresponding path program 8 times [2024-06-28 01:30:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:18,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240595495] [2024-06-28 01:30:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:19,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:19,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240595495] [2024-06-28 01:30:19,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240595495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:19,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:19,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:19,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292052893] [2024-06-28 01:30:19,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:19,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:19,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:19,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:30:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 389 transitions, 5346 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:19,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:19,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:30:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:23,411 INFO L124 PetriNetUnfolderBase]: 11096/17865 cut-off events. [2024-06-28 01:30:23,411 INFO L125 PetriNetUnfolderBase]: For 359117/359126 co-relation queries the response was YES. [2024-06-28 01:30:23,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109549 conditions, 17865 events. 11096/17865 cut-off events. For 359117/359126 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 125427 event pairs, 2699 based on Foata normal form. 18/17312 useless extension candidates. Maximal degree in co-relation 109464. Up to 12195 conditions per place. [2024-06-28 01:30:23,850 INFO L140 encePairwiseOnDemand]: 32/49 looper letters, 343 selfloop transitions, 340 changer transitions 0/691 dead transitions. [2024-06-28 01:30:23,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 691 transitions, 10803 flow [2024-06-28 01:30:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:23,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:30:23,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528344671201814 [2024-06-28 01:30:23,852 INFO L175 Difference]: Start difference. First operand has 184 places, 389 transitions, 5346 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:30:23,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 691 transitions, 10803 flow [2024-06-28 01:30:24,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 691 transitions, 10596 flow, removed 94 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:24,699 INFO L231 Difference]: Finished difference. Result has 195 places, 556 transitions, 9114 flow [2024-06-28 01:30:24,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9114, PETRI_PLACES=195, PETRI_TRANSITIONS=556} [2024-06-28 01:30:24,701 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 140 predicate places. [2024-06-28 01:30:24,701 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 556 transitions, 9114 flow [2024-06-28 01:30:24,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:24,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:24,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:24,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:30:24,702 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:24,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1829179394, now seen corresponding path program 1 times [2024-06-28 01:30:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610574608] [2024-06-28 01:30:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:24,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:25,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:25,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610574608] [2024-06-28 01:30:25,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610574608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:25,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:25,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:30:25,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050584483] [2024-06-28 01:30:25,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:30:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:30:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:30:25,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:30:25,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 556 transitions, 9114 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:25,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:25,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:30:25,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:29,009 INFO L124 PetriNetUnfolderBase]: 9964/16399 cut-off events. [2024-06-28 01:30:29,009 INFO L125 PetriNetUnfolderBase]: For 361691/361691 co-relation queries the response was YES. [2024-06-28 01:30:29,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105928 conditions, 16399 events. 9964/16399 cut-off events. For 361691/361691 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 119173 event pairs, 3197 based on Foata normal form. 3/15901 useless extension candidates. Maximal degree in co-relation 105837. Up to 13300 conditions per place. [2024-06-28 01:30:29,254 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 418 selfloop transitions, 18 changer transitions 0/579 dead transitions. [2024-06-28 01:30:29,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 579 transitions, 10088 flow [2024-06-28 01:30:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:30:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:30:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:30:29,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-28 01:30:29,256 INFO L175 Difference]: Start difference. First operand has 195 places, 556 transitions, 9114 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:30:29,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 579 transitions, 10088 flow [2024-06-28 01:30:29,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 579 transitions, 9440 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:29,993 INFO L231 Difference]: Finished difference. Result has 194 places, 559 transitions, 8547 flow [2024-06-28 01:30:29,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8466, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8547, PETRI_PLACES=194, PETRI_TRANSITIONS=559} [2024-06-28 01:30:29,994 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 139 predicate places. [2024-06-28 01:30:29,994 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 559 transitions, 8547 flow [2024-06-28 01:30:29,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:29,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:29,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:29,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:30:29,995 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:29,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:29,995 INFO L85 PathProgramCache]: Analyzing trace with hash -633628877, now seen corresponding path program 1 times [2024-06-28 01:30:29,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:29,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968554614] [2024-06-28 01:30:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:29,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:31,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:31,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968554614] [2024-06-28 01:30:31,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968554614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:31,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:31,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:31,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131956423] [2024-06-28 01:30:31,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:31,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:31,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:31,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:30:31,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 559 transitions, 8547 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:31,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:31,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:30:31,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:34,520 INFO L124 PetriNetUnfolderBase]: 10340/17039 cut-off events. [2024-06-28 01:30:34,521 INFO L125 PetriNetUnfolderBase]: For 368028/368150 co-relation queries the response was YES. [2024-06-28 01:30:34,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107255 conditions, 17039 events. 10340/17039 cut-off events. For 368028/368150 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 123520 event pairs, 2683 based on Foata normal form. 13/16440 useless extension candidates. Maximal degree in co-relation 107165. Up to 13623 conditions per place. [2024-06-28 01:30:34,864 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 452 selfloop transitions, 44 changer transitions 0/629 dead transitions. [2024-06-28 01:30:34,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 629 transitions, 9929 flow [2024-06-28 01:30:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:34,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:30:34,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056689342403629 [2024-06-28 01:30:34,865 INFO L175 Difference]: Start difference. First operand has 194 places, 559 transitions, 8547 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:30:34,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 629 transitions, 9929 flow [2024-06-28 01:30:35,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 629 transitions, 9872 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:35,494 INFO L231 Difference]: Finished difference. Result has 199 places, 562 transitions, 8666 flow [2024-06-28 01:30:35,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8490, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8666, PETRI_PLACES=199, PETRI_TRANSITIONS=562} [2024-06-28 01:30:35,494 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 144 predicate places. [2024-06-28 01:30:35,494 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 562 transitions, 8666 flow [2024-06-28 01:30:35,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:35,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:35,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:35,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:30:35,495 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:35,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:35,497 INFO L85 PathProgramCache]: Analyzing trace with hash -633508907, now seen corresponding path program 2 times [2024-06-28 01:30:35,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:35,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288808089] [2024-06-28 01:30:35,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:35,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:36,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:36,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288808089] [2024-06-28 01:30:36,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288808089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:36,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:36,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:36,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321799821] [2024-06-28 01:30:36,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:36,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:36,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:36,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:36,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:36,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:30:36,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 562 transitions, 8666 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:36,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:36,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:30:36,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:40,068 INFO L124 PetriNetUnfolderBase]: 10387/17050 cut-off events. [2024-06-28 01:30:40,068 INFO L125 PetriNetUnfolderBase]: For 390367/390503 co-relation queries the response was YES. [2024-06-28 01:30:40,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109094 conditions, 17050 events. 10387/17050 cut-off events. For 390367/390503 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 123006 event pairs, 2490 based on Foata normal form. 21/16468 useless extension candidates. Maximal degree in co-relation 109003. Up to 13133 conditions per place. [2024-06-28 01:30:40,275 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 394 selfloop transitions, 107 changer transitions 0/634 dead transitions. [2024-06-28 01:30:40,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 634 transitions, 10262 flow [2024-06-28 01:30:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:30:40,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-28 01:30:40,277 INFO L175 Difference]: Start difference. First operand has 199 places, 562 transitions, 8666 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:30:40,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 634 transitions, 10262 flow [2024-06-28 01:30:40,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 634 transitions, 10000 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:40,966 INFO L231 Difference]: Finished difference. Result has 199 places, 568 transitions, 8792 flow [2024-06-28 01:30:40,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8404, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8792, PETRI_PLACES=199, PETRI_TRANSITIONS=568} [2024-06-28 01:30:40,969 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 144 predicate places. [2024-06-28 01:30:40,969 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 568 transitions, 8792 flow [2024-06-28 01:30:40,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:40,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:40,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:40,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:30:40,970 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:40,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1662545677, now seen corresponding path program 1 times [2024-06-28 01:30:40,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:40,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538261833] [2024-06-28 01:30:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:40,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:42,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:42,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538261833] [2024-06-28 01:30:42,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538261833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:42,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:42,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:42,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464030727] [2024-06-28 01:30:42,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:42,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:42,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:42,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:42,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:42,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:30:42,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 568 transitions, 8792 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:42,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:42,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:30:42,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:45,864 INFO L124 PetriNetUnfolderBase]: 11350/18209 cut-off events. [2024-06-28 01:30:45,864 INFO L125 PetriNetUnfolderBase]: For 437187/437196 co-relation queries the response was YES. [2024-06-28 01:30:45,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119484 conditions, 18209 events. 11350/18209 cut-off events. For 437187/437196 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 127822 event pairs, 2864 based on Foata normal form. 14/17640 useless extension candidates. Maximal degree in co-relation 119392. Up to 10150 conditions per place. [2024-06-28 01:30:46,079 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 248 selfloop transitions, 392 changer transitions 0/648 dead transitions. [2024-06-28 01:30:46,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 648 transitions, 11020 flow [2024-06-28 01:30:46,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:30:46,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-06-28 01:30:46,081 INFO L175 Difference]: Start difference. First operand has 199 places, 568 transitions, 8792 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:30:46,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 648 transitions, 11020 flow [2024-06-28 01:30:46,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 648 transitions, 10813 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:46,815 INFO L231 Difference]: Finished difference. Result has 205 places, 580 transitions, 9717 flow [2024-06-28 01:30:46,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=8585, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9717, PETRI_PLACES=205, PETRI_TRANSITIONS=580} [2024-06-28 01:30:46,816 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 150 predicate places. [2024-06-28 01:30:46,816 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 580 transitions, 9717 flow [2024-06-28 01:30:46,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:46,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:46,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:46,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:30:46,817 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:46,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:46,817 INFO L85 PathProgramCache]: Analyzing trace with hash -628867277, now seen corresponding path program 3 times [2024-06-28 01:30:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:46,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969390864] [2024-06-28 01:30:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:46,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969390864] [2024-06-28 01:30:47,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969390864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:47,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:47,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369565616] [2024-06-28 01:30:47,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:47,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:47,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:30:47,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 580 transitions, 9717 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:47,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:47,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:30:47,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:51,344 INFO L124 PetriNetUnfolderBase]: 10556/16730 cut-off events. [2024-06-28 01:30:51,345 INFO L125 PetriNetUnfolderBase]: For 468460/468536 co-relation queries the response was YES. [2024-06-28 01:30:51,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117744 conditions, 16730 events. 10556/16730 cut-off events. For 468460/468536 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 116480 event pairs, 2274 based on Foata normal form. 21/16295 useless extension candidates. Maximal degree in co-relation 117648. Up to 13300 conditions per place. [2024-06-28 01:30:51,534 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 426 selfloop transitions, 91 changer transitions 0/653 dead transitions. [2024-06-28 01:30:51,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 653 transitions, 11303 flow [2024-06-28 01:30:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:30:51,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-06-28 01:30:51,539 INFO L175 Difference]: Start difference. First operand has 205 places, 580 transitions, 9717 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:30:51,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 653 transitions, 11303 flow [2024-06-28 01:30:52,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 653 transitions, 10758 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:52,616 INFO L231 Difference]: Finished difference. Result has 210 places, 583 transitions, 9428 flow [2024-06-28 01:30:52,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9172, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9428, PETRI_PLACES=210, PETRI_TRANSITIONS=583} [2024-06-28 01:30:52,617 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 155 predicate places. [2024-06-28 01:30:52,617 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 583 transitions, 9428 flow [2024-06-28 01:30:52,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:52,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:52,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:52,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:30:52,617 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:52,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash -76859477, now seen corresponding path program 2 times [2024-06-28 01:30:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628072298] [2024-06-28 01:30:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:53,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:53,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628072298] [2024-06-28 01:30:53,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628072298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:53,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:53,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509803562] [2024-06-28 01:30:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:53,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:53,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:53,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:30:53,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 583 transitions, 9428 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:53,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:53,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:30:53,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:57,251 INFO L124 PetriNetUnfolderBase]: 11613/17836 cut-off events. [2024-06-28 01:30:57,252 INFO L125 PetriNetUnfolderBase]: For 492495/492504 co-relation queries the response was YES. [2024-06-28 01:30:57,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127751 conditions, 17836 events. 11613/17836 cut-off events. For 492495/492504 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 119147 event pairs, 2386 based on Foata normal form. 14/17452 useless extension candidates. Maximal degree in co-relation 127653. Up to 10361 conditions per place. [2024-06-28 01:30:57,491 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 343 selfloop transitions, 327 changer transitions 0/678 dead transitions. [2024-06-28 01:30:57,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 678 transitions, 11963 flow [2024-06-28 01:30:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:57,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:57,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:30:57,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-06-28 01:30:57,492 INFO L175 Difference]: Start difference. First operand has 210 places, 583 transitions, 9428 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:30:57,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 678 transitions, 11963 flow [2024-06-28 01:30:58,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 678 transitions, 11772 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:58,838 INFO L231 Difference]: Finished difference. Result has 215 places, 595 transitions, 10271 flow [2024-06-28 01:30:58,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9237, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10271, PETRI_PLACES=215, PETRI_TRANSITIONS=595} [2024-06-28 01:30:58,839 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 160 predicate places. [2024-06-28 01:30:58,839 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 595 transitions, 10271 flow [2024-06-28 01:30:58,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:58,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:58,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:58,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:30:58,840 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:58,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash -628867091, now seen corresponding path program 3 times [2024-06-28 01:30:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:58,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746364426] [2024-06-28 01:30:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:58,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:59,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:59,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746364426] [2024-06-28 01:30:59,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746364426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:59,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:59,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:59,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075276304] [2024-06-28 01:30:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:59,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:59,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:59,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:59,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:59,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:30:59,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 595 transitions, 10271 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:59,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:59,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:30:59,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:03,549 INFO L124 PetriNetUnfolderBase]: 11601/17870 cut-off events. [2024-06-28 01:31:03,549 INFO L125 PetriNetUnfolderBase]: For 533782/533791 co-relation queries the response was YES. [2024-06-28 01:31:03,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132536 conditions, 17870 events. 11601/17870 cut-off events. For 533782/533791 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 119890 event pairs, 2511 based on Foata normal form. 14/17474 useless extension candidates. Maximal degree in co-relation 132435. Up to 10355 conditions per place. [2024-06-28 01:31:03,817 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 333 selfloop transitions, 328 changer transitions 0/669 dead transitions. [2024-06-28 01:31:03,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 669 transitions, 12463 flow [2024-06-28 01:31:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:31:03,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-28 01:31:03,819 INFO L175 Difference]: Start difference. First operand has 215 places, 595 transitions, 10271 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:31:03,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 669 transitions, 12463 flow [2024-06-28 01:31:05,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 669 transitions, 11999 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:05,620 INFO L231 Difference]: Finished difference. Result has 220 places, 595 transitions, 10475 flow [2024-06-28 01:31:05,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9809, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10475, PETRI_PLACES=220, PETRI_TRANSITIONS=595} [2024-06-28 01:31:05,622 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 165 predicate places. [2024-06-28 01:31:05,622 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 595 transitions, 10475 flow [2024-06-28 01:31:05,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:05,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:05,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:05,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:31:05,623 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:05,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash -456370691, now seen corresponding path program 4 times [2024-06-28 01:31:05,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:05,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105983450] [2024-06-28 01:31:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:05,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:06,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105983450] [2024-06-28 01:31:06,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105983450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:06,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:06,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:06,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746143331] [2024-06-28 01:31:06,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:06,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:06,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:06,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:06,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:06,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:31:06,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 595 transitions, 10475 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:06,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:06,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:31:06,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:10,549 INFO L124 PetriNetUnfolderBase]: 11897/18213 cut-off events. [2024-06-28 01:31:10,550 INFO L125 PetriNetUnfolderBase]: For 572813/572816 co-relation queries the response was YES. [2024-06-28 01:31:10,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136599 conditions, 18213 events. 11897/18213 cut-off events. For 572813/572816 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 121303 event pairs, 2449 based on Foata normal form. 8/17821 useless extension candidates. Maximal degree in co-relation 136497. Up to 10567 conditions per place. [2024-06-28 01:31:10,814 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 412 selfloop transitions, 284 changer transitions 0/704 dead transitions. [2024-06-28 01:31:10,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 704 transitions, 13363 flow [2024-06-28 01:31:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:31:10,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-06-28 01:31:10,824 INFO L175 Difference]: Start difference. First operand has 220 places, 595 transitions, 10475 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:31:10,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 704 transitions, 13363 flow [2024-06-28 01:31:12,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 704 transitions, 12654 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:12,242 INFO L231 Difference]: Finished difference. Result has 223 places, 607 transitions, 10693 flow [2024-06-28 01:31:12,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=9784, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10693, PETRI_PLACES=223, PETRI_TRANSITIONS=607} [2024-06-28 01:31:12,243 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 168 predicate places. [2024-06-28 01:31:12,243 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 607 transitions, 10693 flow [2024-06-28 01:31:12,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:12,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:12,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:12,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:31:12,244 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:12,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:12,245 INFO L85 PathProgramCache]: Analyzing trace with hash -456377201, now seen corresponding path program 5 times [2024-06-28 01:31:12,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:12,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138115717] [2024-06-28 01:31:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:12,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:13,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:13,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138115717] [2024-06-28 01:31:13,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138115717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:13,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:13,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:13,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10319434] [2024-06-28 01:31:13,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:13,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:13,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:13,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:31:13,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 607 transitions, 10693 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:13,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:13,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:31:13,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand