./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix017_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix017_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix017_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix017_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:24:00,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:24:00,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:24:00,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:24:00,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:24:00,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:24:00,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:24:00,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:24:00,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:24:00,833 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:24:00,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:24:00,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:24:00,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:24:00,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:24:00,836 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:24:00,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:24:00,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:24:00,836 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:24:00,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:24:00,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:24:00,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:24:00,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:24:00,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:24:00,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:24:00,839 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:24:00,839 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:24:00,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:24:00,839 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:24:00,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:24:00,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:24:00,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:24:00,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:24:00,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:24:00,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:24:00,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:24:00,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:24:00,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:24:00,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:24:00,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:24:00,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:24:00,843 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:24:00,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:24:00,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:24:00,843 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:24:01,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:24:01,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:24:01,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:24:01,070 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:24:01,070 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:24:01,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix017_pso.opt_tso.opt.i [2024-06-27 23:24:02,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:24:02,261 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:24:02,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017_pso.opt_tso.opt.i [2024-06-27 23:24:02,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca48dbc28/4595b7ebc29446a2ac973e575cb12fac/FLAG348d59776 [2024-06-27 23:24:02,283 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca48dbc28/4595b7ebc29446a2ac973e575cb12fac [2024-06-27 23:24:02,285 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:24:02,287 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:24:02,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix017_pso.opt_tso.opt.yml/witness.yml [2024-06-27 23:24:02,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:24:02,364 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:24:02,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:24:02,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:24:02,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:24:02,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:24:02" (1/2) ... [2024-06-27 23:24:02,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c7375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:24:02, skipping insertion in model container [2024-06-27 23:24:02,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:24:02" (1/2) ... [2024-06-27 23:24:02,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9b561ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:24:02, skipping insertion in model container [2024-06-27 23:24:02,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:24:02" (2/2) ... [2024-06-27 23:24:02,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c7375a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02, skipping insertion in model container [2024-06-27 23:24:02,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:24:02" (2/2) ... [2024-06-27 23:24:02,374 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:24:02,399 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:24:02,401 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:24:02,401 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:24:02,401 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:24:02,401 INFO L97 edCorrectnessWitness]: Location invariant before [L873-L873] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:24:02,402 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:24:02,402 INFO L106 edCorrectnessWitness]: ghost_update [L867-L867] multithreaded = 1; [2024-06-27 23:24:02,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:24:02,714 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:24:02,730 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:24:02,910 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:24:02,956 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:24:02,957 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02 WrapperNode [2024-06-27 23:24:02,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:24:02,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:24:02,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:24:02,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:24:02,963 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 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:02,988 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 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,046 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 162 [2024-06-27 23:24:03,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:24:03,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:24:03,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:24:03,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:24:03,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,094 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]. [2024-06-27 23:24:03,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:24:03,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:24:03,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:24:03,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:24:03,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (1/1) ... [2024-06-27 23:24:03,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:24:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:24:03,159 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) [2024-06-27 23:24:03,178 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 [2024-06-27 23:24:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:24:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:24:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:24:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:24:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:24:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:24:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:24:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:24:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 23:24:03,192 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 23:24:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:24:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:24:03,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:24:03,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:24:03,194 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:24:03,311 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:24:03,313 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:24:03,813 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:24:03,813 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:24:03,967 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:24:03,967 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:24:03,967 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:24:03 BoogieIcfgContainer [2024-06-27 23:24:03,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:24:03,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:24:03,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:24:03,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:24:03,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:24:02" (1/4) ... [2024-06-27 23:24:03,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa1ce1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:24:03, skipping insertion in model container [2024-06-27 23:24:03,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:24:02" (2/4) ... [2024-06-27 23:24:03,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa1ce1b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:24:03, skipping insertion in model container [2024-06-27 23:24:03,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:24:02" (3/4) ... [2024-06-27 23:24:03,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa1ce1b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:24:03, skipping insertion in model container [2024-06-27 23:24:03,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:24:03" (4/4) ... [2024-06-27 23:24:03,991 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017_pso.opt_tso.opt.i [2024-06-27 23:24:04,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:24:04,005 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:24:04,005 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:24:04,045 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:24:04,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 23:24:04,115 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-27 23:24:04,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:24:04,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:24:04,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 23:24:04,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-27 23:24:04,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:24:04,139 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;@b235007, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:24:04,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:24:04,145 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:24:04,145 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:24:04,145 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:24:04,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:04,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:24:04,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:04,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash 417558827, now seen corresponding path program 1 times [2024-06-27 23:24:04,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:04,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130157378] [2024-06-27 23:24:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:04,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:05,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:05,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130157378] [2024-06-27 23:24:05,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130157378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:05,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:05,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:24:05,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144284366] [2024-06-27 23:24:05,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:05,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:24:05,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:24:05,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:24:05,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-27 23:24:05,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:05,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:05,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-27 23:24:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:06,375 INFO L124 PetriNetUnfolderBase]: 4867/6987 cut-off events. [2024-06-27 23:24:06,375 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-27 23:24:06,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13899 conditions, 6987 events. 4867/6987 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 39890 event pairs, 3534 based on Foata normal form. 1/6756 useless extension candidates. Maximal degree in co-relation 13886. Up to 6693 conditions per place. [2024-06-27 23:24:06,414 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 40 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-27 23:24:06,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 223 flow [2024-06-27 23:24:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:24:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:24:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-27 23:24:06,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-06-27 23:24:06,426 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 103 transitions. [2024-06-27 23:24:06,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 223 flow [2024-06-27 23:24:06,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:24:06,433 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-27 23:24:06,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 23:24:06,437 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-27 23:24:06,438 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-27 23:24:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:06,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:06,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:06,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:24:06,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:06,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1842098634, now seen corresponding path program 1 times [2024-06-27 23:24:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:06,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750799922] [2024-06-27 23:24:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750799922] [2024-06-27 23:24:07,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750799922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:07,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:07,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:24:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716640827] [2024-06-27 23:24:07,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:07,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:24:07,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:24:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:24:07,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-27 23:24:07,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:07,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:07,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-27 23:24:07,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:08,271 INFO L124 PetriNetUnfolderBase]: 5569/7817 cut-off events. [2024-06-27 23:24:08,271 INFO L125 PetriNetUnfolderBase]: For 1718/1718 co-relation queries the response was YES. [2024-06-27 23:24:08,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18004 conditions, 7817 events. 5569/7817 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 43560 event pairs, 3437 based on Foata normal form. 4/7793 useless extension candidates. Maximal degree in co-relation 17992. Up to 7610 conditions per place. [2024-06-27 23:24:08,312 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 51 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-27 23:24:08,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 317 flow [2024-06-27 23:24:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:24:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:24:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-27 23:24:08,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-27 23:24:08,314 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 132 transitions. [2024-06-27 23:24:08,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 317 flow [2024-06-27 23:24:08,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:24:08,316 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-27 23:24:08,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 23:24:08,317 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-27 23:24:08,317 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-27 23:24:08,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:08,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:08,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:08,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:24:08,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:08,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1164083757, now seen corresponding path program 1 times [2024-06-27 23:24:08,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:08,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314525] [2024-06-27 23:24:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:08,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:09,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314525] [2024-06-27 23:24:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:09,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:09,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:24:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474745803] [2024-06-27 23:24:09,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:09,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:24:09,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:24:09,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:24:09,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-27 23:24:09,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:09,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:09,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-27 23:24:09,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:10,508 INFO L124 PetriNetUnfolderBase]: 7070/9853 cut-off events. [2024-06-27 23:24:10,509 INFO L125 PetriNetUnfolderBase]: For 5873/5873 co-relation queries the response was YES. [2024-06-27 23:24:10,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25287 conditions, 9853 events. 7070/9853 cut-off events. For 5873/5873 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 54646 event pairs, 3323 based on Foata normal form. 8/9824 useless extension candidates. Maximal degree in co-relation 25273. Up to 9556 conditions per place. [2024-06-27 23:24:10,561 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 69 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-27 23:24:10,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 482 flow [2024-06-27 23:24:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:24:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:24:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 23:24:10,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2024-06-27 23:24:10,563 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 6 states and 185 transitions. [2024-06-27 23:24:10,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 482 flow [2024-06-27 23:24:10,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 454 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 23:24:10,566 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 241 flow [2024-06-27 23:24:10,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-27 23:24:10,567 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-06-27 23:24:10,567 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 241 flow [2024-06-27 23:24:10,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:10,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:10,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:10,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:24:10,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:10,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash 906520462, now seen corresponding path program 1 times [2024-06-27 23:24:10,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188459692] [2024-06-27 23:24:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188459692] [2024-06-27 23:24:11,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188459692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:11,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:11,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:24:11,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033056508] [2024-06-27 23:24:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:11,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:24:11,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:11,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:24:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:24:11,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:11,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:11,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:11,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:11,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:13,132 INFO L124 PetriNetUnfolderBase]: 7061/9853 cut-off events. [2024-06-27 23:24:13,132 INFO L125 PetriNetUnfolderBase]: For 11347/11347 co-relation queries the response was YES. [2024-06-27 23:24:13,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27985 conditions, 9853 events. 7061/9853 cut-off events. For 11347/11347 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 54636 event pairs, 3680 based on Foata normal form. 3/9836 useless extension candidates. Maximal degree in co-relation 27968. Up to 9613 conditions per place. [2024-06-27 23:24:13,203 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 58 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-27 23:24:13,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 456 flow [2024-06-27 23:24:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:24:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:24:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-27 23:24:13,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-27 23:24:13,206 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 241 flow. Second operand 5 states and 132 transitions. [2024-06-27 23:24:13,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 456 flow [2024-06-27 23:24:13,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 416 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:24:13,214 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 284 flow [2024-06-27 23:24:13,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-27 23:24:13,216 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-27 23:24:13,216 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 284 flow [2024-06-27 23:24:13,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:13,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:13,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:13,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:24:13,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:13,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash 291940155, now seen corresponding path program 1 times [2024-06-27 23:24:13,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:13,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926321491] [2024-06-27 23:24:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:14,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:14,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926321491] [2024-06-27 23:24:14,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926321491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:14,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:14,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:24:14,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156346091] [2024-06-27 23:24:14,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:14,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:24:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:24:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:24:14,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:14,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-06-27 23:24:14,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:14,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:14,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:15,825 INFO L124 PetriNetUnfolderBase]: 7137/9951 cut-off events. [2024-06-27 23:24:15,825 INFO L125 PetriNetUnfolderBase]: For 17429/17455 co-relation queries the response was YES. [2024-06-27 23:24:15,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30975 conditions, 9951 events. 7137/9951 cut-off events. For 17429/17455 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 54912 event pairs, 3553 based on Foata normal form. 5/9930 useless extension candidates. Maximal degree in co-relation 30954. Up to 9637 conditions per place. [2024-06-27 23:24:15,879 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 71 selfloop transitions, 31 changer transitions 0/110 dead transitions. [2024-06-27 23:24:15,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 725 flow [2024-06-27 23:24:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:24:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:24:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-27 23:24:15,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-06-27 23:24:15,883 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 284 flow. Second operand 6 states and 168 transitions. [2024-06-27 23:24:15,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 725 flow [2024-06-27 23:24:15,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 110 transitions, 702 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 23:24:15,889 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 475 flow [2024-06-27 23:24:15,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2024-06-27 23:24:15,897 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-27 23:24:15,897 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 475 flow [2024-06-27 23:24:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-06-27 23:24:15,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:15,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:15,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:24:15,898 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:15,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:15,898 INFO L85 PathProgramCache]: Analyzing trace with hash 314260155, now seen corresponding path program 2 times [2024-06-27 23:24:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644621811] [2024-06-27 23:24:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:15,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:17,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:17,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644621811] [2024-06-27 23:24:17,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644621811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:17,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:17,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:24:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902717385] [2024-06-27 23:24:17,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:17,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:24:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:17,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:24:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:24:17,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:17,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-06-27 23:24:17,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:17,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:17,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:18,445 INFO L124 PetriNetUnfolderBase]: 7128/9966 cut-off events. [2024-06-27 23:24:18,445 INFO L125 PetriNetUnfolderBase]: For 25552/25613 co-relation queries the response was YES. [2024-06-27 23:24:18,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33793 conditions, 9966 events. 7128/9966 cut-off events. For 25552/25613 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 55243 event pairs, 3547 based on Foata normal form. 39/9982 useless extension candidates. Maximal degree in co-relation 33767. Up to 9628 conditions per place. [2024-06-27 23:24:18,513 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 66 selfloop transitions, 32 changer transitions 0/106 dead transitions. [2024-06-27 23:24:18,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 106 transitions, 767 flow [2024-06-27 23:24:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:24:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:24:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-27 23:24:18,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224358974358975 [2024-06-27 23:24:18,515 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 475 flow. Second operand 6 states and 163 transitions. [2024-06-27 23:24:18,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 106 transitions, 767 flow [2024-06-27 23:24:18,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 106 transitions, 739 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-06-27 23:24:18,528 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 524 flow [2024-06-27 23:24:18,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=524, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-27 23:24:18,529 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-27 23:24:18,529 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 524 flow [2024-06-27 23:24:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-06-27 23:24:18,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:18,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:18,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:24:18,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:18,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:18,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1513485731, now seen corresponding path program 3 times [2024-06-27 23:24:18,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:18,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627510142] [2024-06-27 23:24:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:18,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627510142] [2024-06-27 23:24:19,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627510142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:19,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:19,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:24:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816786536] [2024-06-27 23:24:19,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:19,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:24:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:24:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:24:19,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:19,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-06-27 23:24:19,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:19,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:19,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:20,839 INFO L124 PetriNetUnfolderBase]: 7191/10053 cut-off events. [2024-06-27 23:24:20,840 INFO L125 PetriNetUnfolderBase]: For 29651/29677 co-relation queries the response was YES. [2024-06-27 23:24:20,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34714 conditions, 10053 events. 7191/10053 cut-off events. For 29651/29677 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 55435 event pairs, 3545 based on Foata normal form. 7/10039 useless extension candidates. Maximal degree in co-relation 34683. Up to 9689 conditions per place. [2024-06-27 23:24:20,890 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 72 selfloop transitions, 49 changer transitions 0/129 dead transitions. [2024-06-27 23:24:20,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 129 transitions, 1009 flow [2024-06-27 23:24:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:24:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:24:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 23:24:20,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-06-27 23:24:20,892 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 524 flow. Second operand 7 states and 188 transitions. [2024-06-27 23:24:20,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 129 transitions, 1009 flow [2024-06-27 23:24:20,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 129 transitions, 906 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 23:24:20,909 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 737 flow [2024-06-27 23:24:20,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=737, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2024-06-27 23:24:20,910 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-27 23:24:20,910 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 737 flow [2024-06-27 23:24:20,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-06-27 23:24:20,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:20,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:20,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:24:20,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:20,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash 82437633, now seen corresponding path program 1 times [2024-06-27 23:24:20,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004722592] [2024-06-27 23:24:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:22,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004722592] [2024-06-27 23:24:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004722592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:22,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:22,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097995766] [2024-06-27 23:24:22,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:22,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:22,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:22,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:22,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:22,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 737 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:22,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:22,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:22,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:23,995 INFO L124 PetriNetUnfolderBase]: 7236/10101 cut-off events. [2024-06-27 23:24:23,995 INFO L125 PetriNetUnfolderBase]: For 36090/36130 co-relation queries the response was YES. [2024-06-27 23:24:24,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35936 conditions, 10101 events. 7236/10101 cut-off events. For 36090/36130 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 55395 event pairs, 3514 based on Foata normal form. 3/10088 useless extension candidates. Maximal degree in co-relation 35902. Up to 9773 conditions per place. [2024-06-27 23:24:24,039 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 100 selfloop transitions, 33 changer transitions 0/141 dead transitions. [2024-06-27 23:24:24,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 141 transitions, 1175 flow [2024-06-27 23:24:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:24:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:24:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 23:24:24,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-06-27 23:24:24,041 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 737 flow. Second operand 7 states and 188 transitions. [2024-06-27 23:24:24,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 141 transitions, 1175 flow [2024-06-27 23:24:24,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 141 transitions, 1104 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 23:24:24,060 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 820 flow [2024-06-27 23:24:24,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=820, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2024-06-27 23:24:24,061 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-27 23:24:24,061 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 820 flow [2024-06-27 23:24:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:24,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:24,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:24,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:24:24,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:24,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash 82557603, now seen corresponding path program 2 times [2024-06-27 23:24:24,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:24,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714640524] [2024-06-27 23:24:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:24,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:25,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:25,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714640524] [2024-06-27 23:24:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714640524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:25,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:25,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763860594] [2024-06-27 23:24:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:25,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:25,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:25,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:25,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 820 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:25,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:25,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:25,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:27,132 INFO L124 PetriNetUnfolderBase]: 7289/10159 cut-off events. [2024-06-27 23:24:27,132 INFO L125 PetriNetUnfolderBase]: For 47413/47465 co-relation queries the response was YES. [2024-06-27 23:24:27,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38891 conditions, 10159 events. 7289/10159 cut-off events. For 47413/47465 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 55860 event pairs, 3461 based on Foata normal form. 39/10174 useless extension candidates. Maximal degree in co-relation 38855. Up to 9687 conditions per place. [2024-06-27 23:24:27,192 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 86 selfloop transitions, 65 changer transitions 0/159 dead transitions. [2024-06-27 23:24:27,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 159 transitions, 1466 flow [2024-06-27 23:24:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:24:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:24:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-27 23:24:27,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412087912087912 [2024-06-27 23:24:27,195 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 820 flow. Second operand 7 states and 197 transitions. [2024-06-27 23:24:27,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 159 transitions, 1466 flow [2024-06-27 23:24:27,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 159 transitions, 1393 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 23:24:27,231 INFO L231 Difference]: Finished difference. Result has 92 places, 120 transitions, 1024 flow [2024-06-27 23:24:27,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1024, PETRI_PLACES=92, PETRI_TRANSITIONS=120} [2024-06-27 23:24:27,232 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2024-06-27 23:24:27,232 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 120 transitions, 1024 flow [2024-06-27 23:24:27,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:27,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:27,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:27,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:24:27,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:27,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash 106569253, now seen corresponding path program 3 times [2024-06-27 23:24:27,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:27,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168166385] [2024-06-27 23:24:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:27,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:28,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:28,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:28,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168166385] [2024-06-27 23:24:28,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168166385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:28,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:28,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:28,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295026523] [2024-06-27 23:24:28,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:28,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:28,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:28,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:28,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:28,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:28,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 120 transitions, 1024 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:28,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:28,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:28,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:30,183 INFO L124 PetriNetUnfolderBase]: 7280/10181 cut-off events. [2024-06-27 23:24:30,184 INFO L125 PetriNetUnfolderBase]: For 61966/62034 co-relation queries the response was YES. [2024-06-27 23:24:30,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41541 conditions, 10181 events. 7280/10181 cut-off events. For 61966/62034 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 56151 event pairs, 3454 based on Foata normal form. 35/10196 useless extension candidates. Maximal degree in co-relation 41503. Up to 9678 conditions per place. [2024-06-27 23:24:30,249 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 82 selfloop transitions, 66 changer transitions 0/156 dead transitions. [2024-06-27 23:24:30,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 1494 flow [2024-06-27 23:24:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:24:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:24:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-27 23:24:30,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247252747252747 [2024-06-27 23:24:30,251 INFO L175 Difference]: Start difference. First operand has 92 places, 120 transitions, 1024 flow. Second operand 7 states and 191 transitions. [2024-06-27 23:24:30,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 1494 flow [2024-06-27 23:24:30,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 156 transitions, 1433 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-27 23:24:30,296 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 1107 flow [2024-06-27 23:24:30,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1107, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2024-06-27 23:24:30,297 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-27 23:24:30,297 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 1107 flow [2024-06-27 23:24:30,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:30,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:30,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:30,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:24:30,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:30,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1230421197, now seen corresponding path program 4 times [2024-06-27 23:24:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:30,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359562062] [2024-06-27 23:24:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:30,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:31,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:31,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359562062] [2024-06-27 23:24:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359562062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:31,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607464416] [2024-06-27 23:24:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:31,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:31,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:31,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:31,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 1107 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:31,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:31,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:31,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:32,881 INFO L124 PetriNetUnfolderBase]: 7435/10445 cut-off events. [2024-06-27 23:24:32,881 INFO L125 PetriNetUnfolderBase]: For 71460/71554 co-relation queries the response was YES. [2024-06-27 23:24:32,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43843 conditions, 10445 events. 7435/10445 cut-off events. For 71460/71554 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 57900 event pairs, 3376 based on Foata normal form. 25/10457 useless extension candidates. Maximal degree in co-relation 43802. Up to 9973 conditions per place. [2024-06-27 23:24:32,950 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 135 selfloop transitions, 66 changer transitions 0/209 dead transitions. [2024-06-27 23:24:32,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 209 transitions, 2115 flow [2024-06-27 23:24:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-06-27 23:24:32,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115384615384615 [2024-06-27 23:24:32,952 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 1107 flow. Second operand 10 states and 266 transitions. [2024-06-27 23:24:32,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 209 transitions, 2115 flow [2024-06-27 23:24:33,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 209 transitions, 1964 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:24:33,029 INFO L231 Difference]: Finished difference. Result has 105 places, 152 transitions, 1478 flow [2024-06-27 23:24:33,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1478, PETRI_PLACES=105, PETRI_TRANSITIONS=152} [2024-06-27 23:24:33,030 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-27 23:24:33,030 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 152 transitions, 1478 flow [2024-06-27 23:24:33,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:33,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:33,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:33,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:24:33,030 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:33,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:33,031 INFO L85 PathProgramCache]: Analyzing trace with hash 425462279, now seen corresponding path program 5 times [2024-06-27 23:24:33,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:33,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800326303] [2024-06-27 23:24:33,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:33,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:34,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:34,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800326303] [2024-06-27 23:24:34,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800326303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:34,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:34,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:34,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443152004] [2024-06-27 23:24:34,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:34,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:34,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:34,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 152 transitions, 1478 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:34,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:34,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:34,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:35,707 INFO L124 PetriNetUnfolderBase]: 7521/10599 cut-off events. [2024-06-27 23:24:35,707 INFO L125 PetriNetUnfolderBase]: For 81969/82061 co-relation queries the response was YES. [2024-06-27 23:24:35,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45589 conditions, 10599 events. 7521/10599 cut-off events. For 81969/82061 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 59049 event pairs, 3376 based on Foata normal form. 11/10600 useless extension candidates. Maximal degree in co-relation 45545. Up to 10097 conditions per place. [2024-06-27 23:24:35,776 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 138 selfloop transitions, 77 changer transitions 0/223 dead transitions. [2024-06-27 23:24:35,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 223 transitions, 2398 flow [2024-06-27 23:24:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 23:24:35,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120192307692307 [2024-06-27 23:24:35,779 INFO L175 Difference]: Start difference. First operand has 105 places, 152 transitions, 1478 flow. Second operand 8 states and 213 transitions. [2024-06-27 23:24:35,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 223 transitions, 2398 flow [2024-06-27 23:24:35,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 223 transitions, 2216 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 23:24:35,886 INFO L231 Difference]: Finished difference. Result has 109 places, 184 transitions, 1882 flow [2024-06-27 23:24:35,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1882, PETRI_PLACES=109, PETRI_TRANSITIONS=184} [2024-06-27 23:24:35,887 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 54 predicate places. [2024-06-27 23:24:35,887 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 184 transitions, 1882 flow [2024-06-27 23:24:35,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:35,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:35,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:35,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:24:35,887 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:35,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash 425466929, now seen corresponding path program 6 times [2024-06-27 23:24:35,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:35,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649195160] [2024-06-27 23:24:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:35,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:37,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:37,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649195160] [2024-06-27 23:24:37,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649195160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:37,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:37,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:37,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971851781] [2024-06-27 23:24:37,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:37,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:37,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:37,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:37,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 184 transitions, 1882 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:37,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:37,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:37,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:38,752 INFO L124 PetriNetUnfolderBase]: 7566/10652 cut-off events. [2024-06-27 23:24:38,752 INFO L125 PetriNetUnfolderBase]: For 90898/90996 co-relation queries the response was YES. [2024-06-27 23:24:38,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46849 conditions, 10652 events. 7566/10652 cut-off events. For 90898/90996 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 59217 event pairs, 3393 based on Foata normal form. 63/10702 useless extension candidates. Maximal degree in co-relation 46803. Up to 9952 conditions per place. [2024-06-27 23:24:38,813 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 88 selfloop transitions, 142 changer transitions 0/238 dead transitions. [2024-06-27 23:24:38,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 238 transitions, 2586 flow [2024-06-27 23:24:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:38,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 23:24:38,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-27 23:24:38,814 INFO L175 Difference]: Start difference. First operand has 109 places, 184 transitions, 1882 flow. Second operand 8 states and 216 transitions. [2024-06-27 23:24:38,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 238 transitions, 2586 flow [2024-06-27 23:24:38,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 238 transitions, 2421 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 23:24:38,893 INFO L231 Difference]: Finished difference. Result has 114 places, 200 transitions, 2158 flow [2024-06-27 23:24:38,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2158, PETRI_PLACES=114, PETRI_TRANSITIONS=200} [2024-06-27 23:24:38,894 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 59 predicate places. [2024-06-27 23:24:38,894 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 200 transitions, 2158 flow [2024-06-27 23:24:38,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:38,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:38,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:38,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:24:38,895 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:38,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:38,895 INFO L85 PathProgramCache]: Analyzing trace with hash 114743767, now seen corresponding path program 1 times [2024-06-27 23:24:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:38,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979771777] [2024-06-27 23:24:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:38,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:40,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:40,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979771777] [2024-06-27 23:24:40,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979771777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:40,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291561284] [2024-06-27 23:24:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:40,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:40,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:40,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:40,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 200 transitions, 2158 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:40,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:40,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:40,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:42,081 INFO L124 PetriNetUnfolderBase]: 8682/12352 cut-off events. [2024-06-27 23:24:42,081 INFO L125 PetriNetUnfolderBase]: For 111243/111243 co-relation queries the response was YES. [2024-06-27 23:24:42,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54388 conditions, 12352 events. 8682/12352 cut-off events. For 111243/111243 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 68693 event pairs, 3879 based on Foata normal form. 6/12253 useless extension candidates. Maximal degree in co-relation 54340. Up to 11748 conditions per place. [2024-06-27 23:24:42,171 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 211 selfloop transitions, 19 changer transitions 0/238 dead transitions. [2024-06-27 23:24:42,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 238 transitions, 2844 flow [2024-06-27 23:24:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 23:24:42,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-27 23:24:42,172 INFO L175 Difference]: Start difference. First operand has 114 places, 200 transitions, 2158 flow. Second operand 8 states and 196 transitions. [2024-06-27 23:24:42,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 238 transitions, 2844 flow [2024-06-27 23:24:42,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 238 transitions, 2420 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 23:24:42,304 INFO L231 Difference]: Finished difference. Result has 116 places, 207 transitions, 1893 flow [2024-06-27 23:24:42,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1893, PETRI_PLACES=116, PETRI_TRANSITIONS=207} [2024-06-27 23:24:42,304 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-27 23:24:42,304 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 207 transitions, 1893 flow [2024-06-27 23:24:42,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:42,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:42,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:42,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:24:42,305 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:42,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash -520331166, now seen corresponding path program 1 times [2024-06-27 23:24:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:42,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414566115] [2024-06-27 23:24:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:43,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:43,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414566115] [2024-06-27 23:24:43,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414566115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:43,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:43,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:24:43,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901939943] [2024-06-27 23:24:43,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:43,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:24:43,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:43,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:24:43,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:24:43,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:43,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 207 transitions, 1893 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:43,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:43,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:43,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:44,839 INFO L124 PetriNetUnfolderBase]: 9206/12964 cut-off events. [2024-06-27 23:24:44,840 INFO L125 PetriNetUnfolderBase]: For 139554/139565 co-relation queries the response was YES. [2024-06-27 23:24:44,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59405 conditions, 12964 events. 9206/12964 cut-off events. For 139554/139565 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 71717 event pairs, 4504 based on Foata normal form. 15/12936 useless extension candidates. Maximal degree in co-relation 59358. Up to 12484 conditions per place. [2024-06-27 23:24:44,936 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 195 selfloop transitions, 12 changer transitions 0/225 dead transitions. [2024-06-27 23:24:44,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 225 transitions, 2397 flow [2024-06-27 23:24:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:24:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:24:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 23:24:44,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49615384615384617 [2024-06-27 23:24:44,938 INFO L175 Difference]: Start difference. First operand has 116 places, 207 transitions, 1893 flow. Second operand 5 states and 129 transitions. [2024-06-27 23:24:44,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 225 transitions, 2397 flow [2024-06-27 23:24:45,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 225 transitions, 2319 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:24:45,123 INFO L231 Difference]: Finished difference. Result has 115 places, 211 transitions, 1894 flow [2024-06-27 23:24:45,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1894, PETRI_PLACES=115, PETRI_TRANSITIONS=211} [2024-06-27 23:24:45,124 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-27 23:24:45,124 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 211 transitions, 1894 flow [2024-06-27 23:24:45,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:45,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:45,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:45,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:24:45,124 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:45,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash -233731230, now seen corresponding path program 1 times [2024-06-27 23:24:45,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:45,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342078930] [2024-06-27 23:24:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:46,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342078930] [2024-06-27 23:24:46,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342078930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:46,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:46,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:24:46,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366293585] [2024-06-27 23:24:46,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:46,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:24:46,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:46,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:24:46,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:24:46,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:46,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 211 transitions, 1894 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:46,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:46,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:46,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:48,964 INFO L124 PetriNetUnfolderBase]: 9361/13198 cut-off events. [2024-06-27 23:24:48,965 INFO L125 PetriNetUnfolderBase]: For 163984/164128 co-relation queries the response was YES. [2024-06-27 23:24:49,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64139 conditions, 13198 events. 9361/13198 cut-off events. For 163984/164128 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 75137 event pairs, 3837 based on Foata normal form. 48/13234 useless extension candidates. Maximal degree in co-relation 64092. Up to 12389 conditions per place. [2024-06-27 23:24:49,059 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 171 selfloop transitions, 75 changer transitions 0/255 dead transitions. [2024-06-27 23:24:49,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 255 transitions, 2600 flow [2024-06-27 23:24:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:24:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:24:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 23:24:49,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893162393162393 [2024-06-27 23:24:49,061 INFO L175 Difference]: Start difference. First operand has 115 places, 211 transitions, 1894 flow. Second operand 9 states and 229 transitions. [2024-06-27 23:24:49,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 255 transitions, 2600 flow [2024-06-27 23:24:49,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 255 transitions, 2569 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 23:24:49,195 INFO L231 Difference]: Finished difference. Result has 121 places, 213 transitions, 2075 flow [2024-06-27 23:24:49,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2075, PETRI_PLACES=121, PETRI_TRANSITIONS=213} [2024-06-27 23:24:49,196 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-27 23:24:49,196 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 213 transitions, 2075 flow [2024-06-27 23:24:49,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:49,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:49,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:49,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:24:49,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:49,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1768816644, now seen corresponding path program 2 times [2024-06-27 23:24:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204198550] [2024-06-27 23:24:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:49,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:50,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:50,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:50,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204198550] [2024-06-27 23:24:50,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204198550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:50,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:50,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:24:50,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505915878] [2024-06-27 23:24:50,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:50,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:24:50,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:24:50,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:24:50,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:50,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 213 transitions, 2075 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:50,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:50,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:50,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:53,056 INFO L124 PetriNetUnfolderBase]: 9490/13365 cut-off events. [2024-06-27 23:24:53,056 INFO L125 PetriNetUnfolderBase]: For 186369/186489 co-relation queries the response was YES. [2024-06-27 23:24:53,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67235 conditions, 13365 events. 9490/13365 cut-off events. For 186369/186489 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 75814 event pairs, 4150 based on Foata normal form. 42/13401 useless extension candidates. Maximal degree in co-relation 67186. Up to 12421 conditions per place. [2024-06-27 23:24:53,180 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 182 selfloop transitions, 80 changer transitions 0/271 dead transitions. [2024-06-27 23:24:53,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 271 transitions, 2877 flow [2024-06-27 23:24:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-27 23:24:53,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49423076923076925 [2024-06-27 23:24:53,181 INFO L175 Difference]: Start difference. First operand has 121 places, 213 transitions, 2075 flow. Second operand 10 states and 257 transitions. [2024-06-27 23:24:53,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 271 transitions, 2877 flow [2024-06-27 23:24:53,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 271 transitions, 2725 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:24:53,361 INFO L231 Difference]: Finished difference. Result has 125 places, 218 transitions, 2177 flow [2024-06-27 23:24:53,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2177, PETRI_PLACES=125, PETRI_TRANSITIONS=218} [2024-06-27 23:24:53,361 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 70 predicate places. [2024-06-27 23:24:53,362 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 218 transitions, 2177 flow [2024-06-27 23:24:53,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:53,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:53,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:53,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:24:53,362 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:53,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:53,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1773403404, now seen corresponding path program 3 times [2024-06-27 23:24:53,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:53,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291360550] [2024-06-27 23:24:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:53,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:54,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:54,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291360550] [2024-06-27 23:24:54,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291360550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:54,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:54,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:24:54,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313035102] [2024-06-27 23:24:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:54,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:24:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:24:54,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:24:55,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:24:55,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 218 transitions, 2177 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:55,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:55,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:24:55,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:57,063 INFO L124 PetriNetUnfolderBase]: 9618/13545 cut-off events. [2024-06-27 23:24:57,063 INFO L125 PetriNetUnfolderBase]: For 211009/211120 co-relation queries the response was YES. [2024-06-27 23:24:57,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70273 conditions, 13545 events. 9618/13545 cut-off events. For 211009/211120 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 77182 event pairs, 4287 based on Foata normal form. 78/13600 useless extension candidates. Maximal degree in co-relation 70223. Up to 12587 conditions per place. [2024-06-27 23:24:57,167 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 120 selfloop transitions, 136 changer transitions 0/265 dead transitions. [2024-06-27 23:24:57,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 265 transitions, 2949 flow [2024-06-27 23:24:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:24:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:24:57,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 23:24:57,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 23:24:57,171 INFO L175 Difference]: Start difference. First operand has 125 places, 218 transitions, 2177 flow. Second operand 9 states and 232 transitions. [2024-06-27 23:24:57,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 265 transitions, 2949 flow [2024-06-27 23:24:57,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 265 transitions, 2791 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:24:57,362 INFO L231 Difference]: Finished difference. Result has 127 places, 220 transitions, 2355 flow [2024-06-27 23:24:57,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2355, PETRI_PLACES=127, PETRI_TRANSITIONS=220} [2024-06-27 23:24:57,363 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2024-06-27 23:24:57,363 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 220 transitions, 2355 flow [2024-06-27 23:24:57,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:57,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:57,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:24:57,363 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:24:57,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash -118255362, now seen corresponding path program 1 times [2024-06-27 23:24:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:57,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647322954] [2024-06-27 23:24:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:58,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:58,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647322954] [2024-06-27 23:24:58,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647322954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:58,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:58,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:24:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983191102] [2024-06-27 23:24:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:58,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:24:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:58,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:24:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:24:58,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:24:58,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 220 transitions, 2355 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:58,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:58,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:24:58,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:01,239 INFO L124 PetriNetUnfolderBase]: 10347/14556 cut-off events. [2024-06-27 23:25:01,240 INFO L125 PetriNetUnfolderBase]: For 238377/238388 co-relation queries the response was YES. [2024-06-27 23:25:01,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75503 conditions, 14556 events. 10347/14556 cut-off events. For 238377/238388 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 81094 event pairs, 4268 based on Foata normal form. 16/14565 useless extension candidates. Maximal degree in co-relation 75452. Up to 13844 conditions per place. [2024-06-27 23:25:01,367 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 205 selfloop transitions, 63 changer transitions 0/275 dead transitions. [2024-06-27 23:25:01,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 275 transitions, 3251 flow [2024-06-27 23:25:01,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:25:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:25:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 23:25:01,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-27 23:25:01,376 INFO L175 Difference]: Start difference. First operand has 127 places, 220 transitions, 2355 flow. Second operand 9 states and 220 transitions. [2024-06-27 23:25:01,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 275 transitions, 3251 flow [2024-06-27 23:25:01,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 275 transitions, 2945 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:01,678 INFO L231 Difference]: Finished difference. Result has 130 places, 233 transitions, 2381 flow [2024-06-27 23:25:01,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2381, PETRI_PLACES=130, PETRI_TRANSITIONS=233} [2024-06-27 23:25:01,678 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-27 23:25:01,678 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 233 transitions, 2381 flow [2024-06-27 23:25:01,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:01,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:01,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:01,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:25:01,679 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:01,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:01,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1622578835, now seen corresponding path program 1 times [2024-06-27 23:25:01,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:01,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219016366] [2024-06-27 23:25:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:02,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:02,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219016366] [2024-06-27 23:25:02,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219016366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:02,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:02,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:25:02,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63777647] [2024-06-27 23:25:02,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:25:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:25:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:25:02,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:25:02,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 233 transitions, 2381 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) [2024-06-27 23:25:02,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:02,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:25:02,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:04,947 INFO L124 PetriNetUnfolderBase]: 9900/14091 cut-off events. [2024-06-27 23:25:04,947 INFO L125 PetriNetUnfolderBase]: For 260631/260633 co-relation queries the response was YES. [2024-06-27 23:25:04,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76316 conditions, 14091 events. 9900/14091 cut-off events. For 260631/260633 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 80432 event pairs, 4122 based on Foata normal form. 9/14045 useless extension candidates. Maximal degree in co-relation 76264. Up to 13197 conditions per place. [2024-06-27 23:25:05,047 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 193 selfloop transitions, 58 changer transitions 0/273 dead transitions. [2024-06-27 23:25:05,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 273 transitions, 3284 flow [2024-06-27 23:25:05,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:25:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:25:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-27 23:25:05,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-06-27 23:25:05,048 INFO L175 Difference]: Start difference. First operand has 130 places, 233 transitions, 2381 flow. Second operand 6 states and 165 transitions. [2024-06-27 23:25:05,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 273 transitions, 3284 flow [2024-06-27 23:25:05,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 273 transitions, 3027 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:05,327 INFO L231 Difference]: Finished difference. Result has 128 places, 245 transitions, 2414 flow [2024-06-27 23:25:05,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2414, PETRI_PLACES=128, PETRI_TRANSITIONS=245} [2024-06-27 23:25:05,328 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-27 23:25:05,328 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 245 transitions, 2414 flow [2024-06-27 23:25:05,328 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) [2024-06-27 23:25:05,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:05,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:05,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:25:05,329 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:05,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1146173714, now seen corresponding path program 4 times [2024-06-27 23:25:05,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:05,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161238850] [2024-06-27 23:25:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:05,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161238850] [2024-06-27 23:25:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161238850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:06,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:06,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:06,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217233368] [2024-06-27 23:25:06,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:06,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:06,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:07,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:25:07,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 245 transitions, 2414 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:07,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:07,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:25:07,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:09,198 INFO L124 PetriNetUnfolderBase]: 10014/14271 cut-off events. [2024-06-27 23:25:09,198 INFO L125 PetriNetUnfolderBase]: For 294226/294324 co-relation queries the response was YES. [2024-06-27 23:25:09,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80877 conditions, 14271 events. 10014/14271 cut-off events. For 294226/294324 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 82559 event pairs, 4117 based on Foata normal form. 66/14321 useless extension candidates. Maximal degree in co-relation 80824. Up to 13066 conditions per place. [2024-06-27 23:25:09,320 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 135 selfloop transitions, 145 changer transitions 0/290 dead transitions. [2024-06-27 23:25:09,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 290 transitions, 3236 flow [2024-06-27 23:25:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:25:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:25:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 23:25:09,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893162393162393 [2024-06-27 23:25:09,322 INFO L175 Difference]: Start difference. First operand has 128 places, 245 transitions, 2414 flow. Second operand 9 states and 229 transitions. [2024-06-27 23:25:09,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 290 transitions, 3236 flow [2024-06-27 23:25:09,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 290 transitions, 3209 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 23:25:09,684 INFO L231 Difference]: Finished difference. Result has 136 places, 247 transitions, 2749 flow [2024-06-27 23:25:09,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2749, PETRI_PLACES=136, PETRI_TRANSITIONS=247} [2024-06-27 23:25:09,684 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 81 predicate places. [2024-06-27 23:25:09,685 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 247 transitions, 2749 flow [2024-06-27 23:25:09,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:09,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:09,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:09,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:25:09,685 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:09,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:09,685 INFO L85 PathProgramCache]: Analyzing trace with hash 681268794, now seen corresponding path program 2 times [2024-06-27 23:25:09,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:09,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946950886] [2024-06-27 23:25:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:09,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:11,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:11,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946950886] [2024-06-27 23:25:11,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946950886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:11,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:11,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:11,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423974958] [2024-06-27 23:25:11,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:11,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:11,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:11,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:11,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:11,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:25:11,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 247 transitions, 2749 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:11,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:11,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:25:11,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:13,638 INFO L124 PetriNetUnfolderBase]: 10743/15148 cut-off events. [2024-06-27 23:25:13,639 INFO L125 PetriNetUnfolderBase]: For 326310/326324 co-relation queries the response was YES. [2024-06-27 23:25:13,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87192 conditions, 15148 events. 10743/15148 cut-off events. For 326310/326324 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 84801 event pairs, 4267 based on Foata normal form. 18/15161 useless extension candidates. Maximal degree in co-relation 87136. Up to 14392 conditions per place. [2024-06-27 23:25:13,781 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 220 selfloop transitions, 82 changer transitions 0/309 dead transitions. [2024-06-27 23:25:13,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 309 transitions, 3795 flow [2024-06-27 23:25:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:25:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:25:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 23:25:13,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636752136752137 [2024-06-27 23:25:13,782 INFO L175 Difference]: Start difference. First operand has 136 places, 247 transitions, 2749 flow. Second operand 9 states and 217 transitions. [2024-06-27 23:25:13,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 309 transitions, 3795 flow [2024-06-27 23:25:14,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 309 transitions, 3449 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:14,369 INFO L231 Difference]: Finished difference. Result has 139 places, 268 transitions, 2865 flow [2024-06-27 23:25:14,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2435, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2865, PETRI_PLACES=139, PETRI_TRANSITIONS=268} [2024-06-27 23:25:14,369 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-06-27 23:25:14,369 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 268 transitions, 2865 flow [2024-06-27 23:25:14,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:14,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:14,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:14,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:25:14,370 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:14,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash 453367644, now seen corresponding path program 3 times [2024-06-27 23:25:14,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:14,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744466560] [2024-06-27 23:25:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:14,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:15,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744466560] [2024-06-27 23:25:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744466560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:15,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:15,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:15,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084332043] [2024-06-27 23:25:15,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:15,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:16,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:25:16,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 268 transitions, 2865 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:16,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:16,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:25:16,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:18,419 INFO L124 PetriNetUnfolderBase]: 10779/15195 cut-off events. [2024-06-27 23:25:18,420 INFO L125 PetriNetUnfolderBase]: For 353844/353858 co-relation queries the response was YES. [2024-06-27 23:25:18,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89943 conditions, 15195 events. 10779/15195 cut-off events. For 353844/353858 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 85037 event pairs, 4281 based on Foata normal form. 18/15208 useless extension candidates. Maximal degree in co-relation 89885. Up to 14444 conditions per place. [2024-06-27 23:25:18,546 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 224 selfloop transitions, 81 changer transitions 0/312 dead transitions. [2024-06-27 23:25:18,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 312 transitions, 3738 flow [2024-06-27 23:25:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:25:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:25:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 23:25:18,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2024-06-27 23:25:18,548 INFO L175 Difference]: Start difference. First operand has 139 places, 268 transitions, 2865 flow. Second operand 9 states and 218 transitions. [2024-06-27 23:25:18,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 312 transitions, 3738 flow [2024-06-27 23:25:18,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 312 transitions, 3582 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 23:25:18,975 INFO L231 Difference]: Finished difference. Result has 145 places, 272 transitions, 2988 flow [2024-06-27 23:25:18,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2988, PETRI_PLACES=145, PETRI_TRANSITIONS=272} [2024-06-27 23:25:18,976 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2024-06-27 23:25:18,976 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 272 transitions, 2988 flow [2024-06-27 23:25:18,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:18,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:18,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:18,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:25:18,976 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:18,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 689839674, now seen corresponding path program 4 times [2024-06-27 23:25:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:18,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849146047] [2024-06-27 23:25:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:18,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:20,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:20,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849146047] [2024-06-27 23:25:20,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849146047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:20,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:20,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:20,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351530253] [2024-06-27 23:25:20,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:20,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:20,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:20,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:20,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:20,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:25:20,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 272 transitions, 2988 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:20,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:20,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:25:20,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:22,930 INFO L124 PetriNetUnfolderBase]: 10815/15234 cut-off events. [2024-06-27 23:25:22,930 INFO L125 PetriNetUnfolderBase]: For 384273/384289 co-relation queries the response was YES. [2024-06-27 23:25:22,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91234 conditions, 15234 events. 10815/15234 cut-off events. For 384273/384289 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 85104 event pairs, 3998 based on Foata normal form. 20/15249 useless extension candidates. Maximal degree in co-relation 91174. Up to 14311 conditions per place. [2024-06-27 23:25:23,067 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 218 selfloop transitions, 97 changer transitions 0/322 dead transitions. [2024-06-27 23:25:23,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 322 transitions, 4094 flow [2024-06-27 23:25:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:25:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:25:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 23:25:23,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 23:25:23,069 INFO L175 Difference]: Start difference. First operand has 145 places, 272 transitions, 2988 flow. Second operand 9 states and 221 transitions. [2024-06-27 23:25:23,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 322 transitions, 4094 flow [2024-06-27 23:25:23,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 322 transitions, 3869 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 23:25:23,575 INFO L231 Difference]: Finished difference. Result has 148 places, 278 transitions, 3129 flow [2024-06-27 23:25:23,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3129, PETRI_PLACES=148, PETRI_TRANSITIONS=278} [2024-06-27 23:25:23,576 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 93 predicate places. [2024-06-27 23:25:23,576 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 278 transitions, 3129 flow [2024-06-27 23:25:23,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:23,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:23,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:23,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:25:23,577 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:23,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2085074461, now seen corresponding path program 2 times [2024-06-27 23:25:23,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:23,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079478210] [2024-06-27 23:25:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:23,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:24,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079478210] [2024-06-27 23:25:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079478210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:24,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:24,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:25:24,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025753701] [2024-06-27 23:25:24,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:24,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:25:24,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:25:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:25:24,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:25:24,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 278 transitions, 3129 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) [2024-06-27 23:25:24,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:24,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:25:24,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:27,022 INFO L124 PetriNetUnfolderBase]: 10206/14581 cut-off events. [2024-06-27 23:25:27,022 INFO L125 PetriNetUnfolderBase]: For 411965/411970 co-relation queries the response was YES. [2024-06-27 23:25:27,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89283 conditions, 14581 events. 10206/14581 cut-off events. For 411965/411970 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 83707 event pairs, 4153 based on Foata normal form. 12/14548 useless extension candidates. Maximal degree in co-relation 89222. Up to 13615 conditions per place. [2024-06-27 23:25:27,154 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 206 selfloop transitions, 62 changer transitions 0/299 dead transitions. [2024-06-27 23:25:27,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 299 transitions, 3837 flow [2024-06-27 23:25:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:25:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:25:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 23:25:27,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 23:25:27,155 INFO L175 Difference]: Start difference. First operand has 148 places, 278 transitions, 3129 flow. Second operand 6 states and 157 transitions. [2024-06-27 23:25:27,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 299 transitions, 3837 flow [2024-06-27 23:25:27,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 299 transitions, 3635 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-27 23:25:27,578 INFO L231 Difference]: Finished difference. Result has 149 places, 278 transitions, 3062 flow [2024-06-27 23:25:27,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3062, PETRI_PLACES=149, PETRI_TRANSITIONS=278} [2024-06-27 23:25:27,579 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-27 23:25:27,579 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 278 transitions, 3062 flow [2024-06-27 23:25:27,579 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) [2024-06-27 23:25:27,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:27,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:27,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:25:27,580 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:27,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash 651010748, now seen corresponding path program 5 times [2024-06-27 23:25:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:27,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979878497] [2024-06-27 23:25:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:28,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979878497] [2024-06-27 23:25:28,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979878497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:28,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:28,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:28,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777343186] [2024-06-27 23:25:28,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:28,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:28,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:28,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:28,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:25:28,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 278 transitions, 3062 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:28,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:28,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:25:28,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:31,413 INFO L124 PetriNetUnfolderBase]: 10678/15300 cut-off events. [2024-06-27 23:25:31,413 INFO L125 PetriNetUnfolderBase]: For 458652/458760 co-relation queries the response was YES. [2024-06-27 23:25:31,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97446 conditions, 15300 events. 10678/15300 cut-off events. For 458652/458760 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 90189 event pairs, 4182 based on Foata normal form. 70/15361 useless extension candidates. Maximal degree in co-relation 97382. Up to 13826 conditions per place. [2024-06-27 23:25:31,561 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 238 selfloop transitions, 112 changer transitions 0/362 dead transitions. [2024-06-27 23:25:31,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 362 transitions, 4422 flow [2024-06-27 23:25:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:31,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-06-27 23:25:31,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-06-27 23:25:31,562 INFO L175 Difference]: Start difference. First operand has 149 places, 278 transitions, 3062 flow. Second operand 11 states and 296 transitions. [2024-06-27 23:25:31,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 362 transitions, 4422 flow [2024-06-27 23:25:32,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 362 transitions, 4312 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:25:32,105 INFO L231 Difference]: Finished difference. Result has 158 places, 292 transitions, 3478 flow [2024-06-27 23:25:32,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2952, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3478, PETRI_PLACES=158, PETRI_TRANSITIONS=292} [2024-06-27 23:25:32,106 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2024-06-27 23:25:32,106 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 292 transitions, 3478 flow [2024-06-27 23:25:32,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:32,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:32,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:32,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:25:32,106 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:32,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1576890070, now seen corresponding path program 6 times [2024-06-27 23:25:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:32,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690831034] [2024-06-27 23:25:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:32,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:33,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:33,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690831034] [2024-06-27 23:25:33,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690831034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:33,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:33,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807288660] [2024-06-27 23:25:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:33,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:33,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:25:33,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 292 transitions, 3478 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:33,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:33,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:25:33,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:35,882 INFO L124 PetriNetUnfolderBase]: 10884/15620 cut-off events. [2024-06-27 23:25:35,882 INFO L125 PetriNetUnfolderBase]: For 510870/510996 co-relation queries the response was YES. [2024-06-27 23:25:35,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102236 conditions, 15620 events. 10884/15620 cut-off events. For 510870/510996 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 92907 event pairs, 4273 based on Foata normal form. 88/15695 useless extension candidates. Maximal degree in co-relation 102169. Up to 14467 conditions per place. [2024-06-27 23:25:36,047 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 243 selfloop transitions, 102 changer transitions 0/357 dead transitions. [2024-06-27 23:25:36,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 357 transitions, 4528 flow [2024-06-27 23:25:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-06-27 23:25:36,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034965034965035 [2024-06-27 23:25:36,048 INFO L175 Difference]: Start difference. First operand has 158 places, 292 transitions, 3478 flow. Second operand 11 states and 288 transitions. [2024-06-27 23:25:36,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 357 transitions, 4528 flow [2024-06-27 23:25:36,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 357 transitions, 4351 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:36,763 INFO L231 Difference]: Finished difference. Result has 162 places, 296 transitions, 3647 flow [2024-06-27 23:25:36,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3305, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3647, PETRI_PLACES=162, PETRI_TRANSITIONS=296} [2024-06-27 23:25:36,764 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 107 predicate places. [2024-06-27 23:25:36,764 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 296 transitions, 3647 flow [2024-06-27 23:25:36,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:36,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:36,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:36,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:25:36,764 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:36,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 112591518, now seen corresponding path program 7 times [2024-06-27 23:25:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:36,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136240850] [2024-06-27 23:25:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:36,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:37,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:37,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136240850] [2024-06-27 23:25:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136240850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:37,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:37,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:25:37,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646411928] [2024-06-27 23:25:37,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:37,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:25:37,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:37,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:25:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:25:37,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-27 23:25:37,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 296 transitions, 3647 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:37,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:37,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-27 23:25:37,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:40,125 INFO L124 PetriNetUnfolderBase]: 8466/13518 cut-off events. [2024-06-27 23:25:40,125 INFO L125 PetriNetUnfolderBase]: For 512638/513130 co-relation queries the response was YES. [2024-06-27 23:25:40,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92152 conditions, 13518 events. 8466/13518 cut-off events. For 512638/513130 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 92178 event pairs, 2518 based on Foata normal form. 121/13333 useless extension candidates. Maximal degree in co-relation 92083. Up to 9802 conditions per place. [2024-06-27 23:25:40,277 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 186 selfloop transitions, 121 changer transitions 0/379 dead transitions. [2024-06-27 23:25:40,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 379 transitions, 5137 flow [2024-06-27 23:25:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-06-27 23:25:40,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-27 23:25:40,285 INFO L175 Difference]: Start difference. First operand has 162 places, 296 transitions, 3647 flow. Second operand 10 states and 299 transitions. [2024-06-27 23:25:40,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 379 transitions, 5137 flow [2024-06-27 23:25:41,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 379 transitions, 4907 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:41,147 INFO L231 Difference]: Finished difference. Result has 165 places, 318 transitions, 4157 flow [2024-06-27 23:25:41,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4157, PETRI_PLACES=165, PETRI_TRANSITIONS=318} [2024-06-27 23:25:41,147 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 110 predicate places. [2024-06-27 23:25:41,147 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 318 transitions, 4157 flow [2024-06-27 23:25:41,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:41,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:41,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:41,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:25:41,148 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:41,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1595564190, now seen corresponding path program 8 times [2024-06-27 23:25:41,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:41,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646934907] [2024-06-27 23:25:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:41,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:42,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:42,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646934907] [2024-06-27 23:25:42,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646934907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:42,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:42,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:42,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836584047] [2024-06-27 23:25:42,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:42,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:42,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:42,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:42,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:42,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:25:42,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 318 transitions, 4157 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:42,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:42,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:25:42,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:46,241 INFO L124 PetriNetUnfolderBase]: 12706/18469 cut-off events. [2024-06-27 23:25:46,241 INFO L125 PetriNetUnfolderBase]: For 656077/656273 co-relation queries the response was YES. [2024-06-27 23:25:46,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127084 conditions, 18469 events. 12706/18469 cut-off events. For 656077/656273 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 114980 event pairs, 4659 based on Foata normal form. 103/18554 useless extension candidates. Maximal degree in co-relation 127012. Up to 15905 conditions per place. [2024-06-27 23:25:46,427 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 286 selfloop transitions, 127 changer transitions 0/425 dead transitions. [2024-06-27 23:25:46,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 425 transitions, 6283 flow [2024-06-27 23:25:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:46,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-27 23:25:46,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5211538461538462 [2024-06-27 23:25:46,428 INFO L175 Difference]: Start difference. First operand has 165 places, 318 transitions, 4157 flow. Second operand 10 states and 271 transitions. [2024-06-27 23:25:46,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 425 transitions, 6283 flow [2024-06-27 23:25:47,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 425 transitions, 6086 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-27 23:25:47,887 INFO L231 Difference]: Finished difference. Result has 172 places, 359 transitions, 5194 flow [2024-06-27 23:25:47,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5194, PETRI_PLACES=172, PETRI_TRANSITIONS=359} [2024-06-27 23:25:47,888 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-27 23:25:47,888 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 359 transitions, 5194 flow [2024-06-27 23:25:47,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:47,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:47,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:47,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:25:47,889 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:47,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1595624640, now seen corresponding path program 9 times [2024-06-27 23:25:47,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:47,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408341216] [2024-06-27 23:25:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:47,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:49,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:49,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408341216] [2024-06-27 23:25:49,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408341216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:49,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:49,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:49,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497984909] [2024-06-27 23:25:49,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:49,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:49,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:49,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:49,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:49,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:25:49,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 359 transitions, 5194 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:49,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:49,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:25:49,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:52,895 INFO L124 PetriNetUnfolderBase]: 12564/18262 cut-off events. [2024-06-27 23:25:52,895 INFO L125 PetriNetUnfolderBase]: For 633974/634170 co-relation queries the response was YES. [2024-06-27 23:25:52,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124164 conditions, 18262 events. 12564/18262 cut-off events. For 633974/634170 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 113645 event pairs, 4804 based on Foata normal form. 129/18369 useless extension candidates. Maximal degree in co-relation 124090. Up to 16493 conditions per place. [2024-06-27 23:25:53,238 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 303 selfloop transitions, 93 changer transitions 0/408 dead transitions. [2024-06-27 23:25:53,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 408 transitions, 6216 flow [2024-06-27 23:25:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:25:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:25:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 23:25:53,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 23:25:53,239 INFO L175 Difference]: Start difference. First operand has 172 places, 359 transitions, 5194 flow. Second operand 9 states and 240 transitions. [2024-06-27 23:25:53,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 408 transitions, 6216 flow [2024-06-27 23:25:54,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 408 transitions, 5794 flow, removed 120 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:54,733 INFO L231 Difference]: Finished difference. Result has 174 places, 359 transitions, 4992 flow [2024-06-27 23:25:54,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4772, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4992, PETRI_PLACES=174, PETRI_TRANSITIONS=359} [2024-06-27 23:25:54,734 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 119 predicate places. [2024-06-27 23:25:54,734 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 359 transitions, 4992 flow [2024-06-27 23:25:54,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:54,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:54,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:54,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:25:54,734 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:25:54,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 851864560, now seen corresponding path program 10 times [2024-06-27 23:25:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957606406] [2024-06-27 23:25:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:56,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:56,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957606406] [2024-06-27 23:25:56,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957606406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:56,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:56,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:25:56,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521388994] [2024-06-27 23:25:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:56,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:25:56,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:56,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:25:56,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:25:56,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:25:56,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 359 transitions, 4992 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:56,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:56,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:25:56,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:59,779 INFO L124 PetriNetUnfolderBase]: 12767/18553 cut-off events. [2024-06-27 23:25:59,779 INFO L125 PetriNetUnfolderBase]: For 622924/623114 co-relation queries the response was YES. [2024-06-27 23:25:59,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124167 conditions, 18553 events. 12767/18553 cut-off events. For 622924/623114 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 115703 event pairs, 4794 based on Foata normal form. 191/18721 useless extension candidates. Maximal degree in co-relation 124092. Up to 16947 conditions per place. [2024-06-27 23:25:59,989 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 231 selfloop transitions, 169 changer transitions 0/412 dead transitions. [2024-06-27 23:25:59,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 412 transitions, 6140 flow [2024-06-27 23:25:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:25:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:25:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 23:25:59,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-27 23:25:59,993 INFO L175 Difference]: Start difference. First operand has 174 places, 359 transitions, 4992 flow. Second operand 9 states and 243 transitions. [2024-06-27 23:25:59,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 412 transitions, 6140 flow [2024-06-27 23:26:00,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 412 transitions, 5954 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 23:26:00,869 INFO L231 Difference]: Finished difference. Result has 175 places, 363 transitions, 5270 flow [2024-06-27 23:26:00,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4806, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5270, PETRI_PLACES=175, PETRI_TRANSITIONS=363} [2024-06-27 23:26:00,870 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 120 predicate places. [2024-06-27 23:26:00,870 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 363 transitions, 5270 flow [2024-06-27 23:26:00,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:00,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:00,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:00,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:26:00,871 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:26:00,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:00,871 INFO L85 PathProgramCache]: Analyzing trace with hash 852049258, now seen corresponding path program 5 times [2024-06-27 23:26:00,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:00,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744276422] [2024-06-27 23:26:00,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:00,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:02,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744276422] [2024-06-27 23:26:02,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744276422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:02,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:02,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:26:02,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433261168] [2024-06-27 23:26:02,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:02,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:26:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:02,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:26:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:26:02,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:26:02,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 363 transitions, 5270 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:02,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:02,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:26:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:06,229 INFO L124 PetriNetUnfolderBase]: 14117/20259 cut-off events. [2024-06-27 23:26:06,229 INFO L125 PetriNetUnfolderBase]: For 621206/621212 co-relation queries the response was YES. [2024-06-27 23:26:06,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132548 conditions, 20259 events. 14117/20259 cut-off events. For 621206/621212 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 122532 event pairs, 5656 based on Foata normal form. 12/20265 useless extension candidates. Maximal degree in co-relation 132473. Up to 19254 conditions per place. [2024-06-27 23:26:06,570 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 320 selfloop transitions, 88 changer transitions 0/415 dead transitions. [2024-06-27 23:26:06,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 415 transitions, 6350 flow [2024-06-27 23:26:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:26:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:26:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 23:26:06,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49786324786324787 [2024-06-27 23:26:06,572 INFO L175 Difference]: Start difference. First operand has 175 places, 363 transitions, 5270 flow. Second operand 9 states and 233 transitions. [2024-06-27 23:26:06,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 415 transitions, 6350 flow [2024-06-27 23:26:07,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 415 transitions, 5936 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 23:26:07,844 INFO L231 Difference]: Finished difference. Result has 178 places, 367 transitions, 5090 flow [2024-06-27 23:26:07,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4856, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5090, PETRI_PLACES=178, PETRI_TRANSITIONS=367} [2024-06-27 23:26:07,845 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 123 predicate places. [2024-06-27 23:26:07,845 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 367 transitions, 5090 flow [2024-06-27 23:26:07,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:07,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:07,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:07,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:26:07,846 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:26:07,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:07,846 INFO L85 PathProgramCache]: Analyzing trace with hash 933630465, now seen corresponding path program 3 times [2024-06-27 23:26:07,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:07,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811922183] [2024-06-27 23:26:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:08,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:08,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811922183] [2024-06-27 23:26:08,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811922183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:08,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:08,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:26:08,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918012364] [2024-06-27 23:26:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:08,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:26:08,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:26:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:26:08,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:26:08,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 367 transitions, 5090 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) [2024-06-27 23:26:08,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:08,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:26:08,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:12,296 INFO L124 PetriNetUnfolderBase]: 13620/19756 cut-off events. [2024-06-27 23:26:12,296 INFO L125 PetriNetUnfolderBase]: For 625579/625592 co-relation queries the response was YES. [2024-06-27 23:26:12,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128498 conditions, 19756 events. 13620/19756 cut-off events. For 625579/625592 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 121884 event pairs, 5198 based on Foata normal form. 13/19733 useless extension candidates. Maximal degree in co-relation 128421. Up to 18507 conditions per place. [2024-06-27 23:26:12,520 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 303 selfloop transitions, 77 changer transitions 0/412 dead transitions. [2024-06-27 23:26:12,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 412 transitions, 6108 flow [2024-06-27 23:26:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:26:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:26:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 23:26:12,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-06-27 23:26:12,521 INFO L175 Difference]: Start difference. First operand has 178 places, 367 transitions, 5090 flow. Second operand 7 states and 188 transitions. [2024-06-27 23:26:12,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 412 transitions, 6108 flow [2024-06-27 23:26:13,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 412 transitions, 5786 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:13,770 INFO L231 Difference]: Finished difference. Result has 176 places, 380 transitions, 5092 flow [2024-06-27 23:26:13,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4780, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5092, PETRI_PLACES=176, PETRI_TRANSITIONS=380} [2024-06-27 23:26:13,770 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 121 predicate places. [2024-06-27 23:26:13,770 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 380 transitions, 5092 flow [2024-06-27 23:26:13,771 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) [2024-06-27 23:26:13,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:13,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:13,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:26:13,771 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:26:13,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:13,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1815065613, now seen corresponding path program 1 times [2024-06-27 23:26:13,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:13,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35697669] [2024-06-27 23:26:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:13,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:15,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35697669] [2024-06-27 23:26:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35697669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:15,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:15,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:26:15,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718020781] [2024-06-27 23:26:15,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:15,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:26:15,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:26:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:26:15,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:26:15,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 380 transitions, 5092 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:15,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:15,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:26:15,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:18,529 INFO L124 PetriNetUnfolderBase]: 14265/20470 cut-off events. [2024-06-27 23:26:18,529 INFO L125 PetriNetUnfolderBase]: For 664275/664275 co-relation queries the response was YES. [2024-06-27 23:26:18,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133900 conditions, 20470 events. 14265/20470 cut-off events. For 664275/664275 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 123726 event pairs, 6016 based on Foata normal form. 4/20470 useless extension candidates. Maximal degree in co-relation 133823. Up to 19648 conditions per place. [2024-06-27 23:26:18,727 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 383 selfloop transitions, 23 changer transitions 0/413 dead transitions. [2024-06-27 23:26:18,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 413 transitions, 6266 flow [2024-06-27 23:26:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:26:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:26:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 23:26:18,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-27 23:26:18,729 INFO L175 Difference]: Start difference. First operand has 176 places, 380 transitions, 5092 flow. Second operand 6 states and 155 transitions. [2024-06-27 23:26:18,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 413 transitions, 6266 flow [2024-06-27 23:26:20,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 413 transitions, 6178 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 23:26:20,084 INFO L231 Difference]: Finished difference. Result has 180 places, 388 transitions, 5193 flow [2024-06-27 23:26:20,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5004, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5193, PETRI_PLACES=180, PETRI_TRANSITIONS=388} [2024-06-27 23:26:20,084 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 125 predicate places. [2024-06-27 23:26:20,084 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 388 transitions, 5193 flow [2024-06-27 23:26:20,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:20,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:20,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:20,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:26:20,085 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:26:20,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1808602113, now seen corresponding path program 2 times [2024-06-27 23:26:20,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933228234] [2024-06-27 23:26:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:20,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933228234] [2024-06-27 23:26:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933228234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:21,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:21,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:26:21,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164218810] [2024-06-27 23:26:21,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:21,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:26:21,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:21,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:26:21,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:26:21,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:26:21,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 388 transitions, 5193 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:21,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:21,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:26:21,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand