./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:14:14,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:14:14,957 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:14:14,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:14:14,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:14:14,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:14:14,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:14:14,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:14:14,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:14:14,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:14:14,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:14:14,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:14:14,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:14:14,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:14:14,989 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:14:14,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:14:14,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:14:14,990 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:14:14,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:14:14,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:14:14,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:14:14,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:14:14,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:14:14,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:14:14,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:14:14,992 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:14:14,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:14:14,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:14:14,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:14:14,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:14:14,993 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:14:14,993 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:14:14,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:14:14,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:14:14,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:14:14,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:14:14,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:14:14,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:14:14,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:14:14,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:14:14,995 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:14:14,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:14:14,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:14:14,996 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:14:15,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:14:15,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:14:15,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:14:15,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:14:15,219 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:14:15,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-28 03:14:16,163 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:14:16,345 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:14:16,345 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-28 03:14:16,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dc9eb069/bf27ccd3d1244195802426b0cf55944d/FLAG697308434 [2024-06-28 03:14:16,365 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dc9eb069/bf27ccd3d1244195802426b0cf55944d [2024-06-28 03:14:16,367 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:14:16,367 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:14:16,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 03:14:16,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:14:16,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:14:16,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:14:16,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:14:16,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:14:16,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:14:16" (1/2) ... [2024-06-28 03:14:16,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398677d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:14:16, skipping insertion in model container [2024-06-28 03:14:16,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:14:16" (1/2) ... [2024-06-28 03:14:16,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f9b46e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:14:16, skipping insertion in model container [2024-06-28 03:14:16,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:14:16" (2/2) ... [2024-06-28 03:14:16,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398677d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:16, skipping insertion in model container [2024-06-28 03:14:16,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:14:16" (2/2) ... [2024-06-28 03:14:16,521 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:14:16,621 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:14:16,622 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0) [2024-06-28 03:14:16,623 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0) [2024-06-28 03:14:16,623 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0) [2024-06-28 03:14:16,623 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] (((((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0) [2024-06-28 03:14:16,623 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:14:16,624 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-06-28 03:14:16,660 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:14:16,939 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:14:16,945 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:14:17,085 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:14:17,117 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:14:17,118 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17 WrapperNode [2024-06-28 03:14:17,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:14:17,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:14:17,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:14:17,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:14:17,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,176 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-28 03:14:17,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:14:17,177 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:14:17,177 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:14:17,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:14:17,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,209 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,227 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:14:17,227 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:14:17,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:14:17,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:14:17,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:14:17,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (1/1) ... [2024-06-28 03:14:17,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:14:17,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:14:17,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:14:17,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:14:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:14:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:14:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:14:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:14:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:14:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:14:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:14:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:14:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:14:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:14:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:14:17,309 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:14:17,427 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:14:17,428 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:14:17,729 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:14:17,729 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:14:17,867 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:14:17,867 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:14:17,868 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:14:17 BoogieIcfgContainer [2024-06-28 03:14:17,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:14:17,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:14:17,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:14:17,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:14:17,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:14:16" (1/4) ... [2024-06-28 03:14:17,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616e5953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:14:17, skipping insertion in model container [2024-06-28 03:14:17,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:14:16" (2/4) ... [2024-06-28 03:14:17,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616e5953 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:14:17, skipping insertion in model container [2024-06-28 03:14:17,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:14:17" (3/4) ... [2024-06-28 03:14:17,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616e5953 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:14:17, skipping insertion in model container [2024-06-28 03:14:17,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:14:17" (4/4) ... [2024-06-28 03:14:17,875 INFO L112 eAbstractionObserver]: Analyzing ICFG mix029_power.oepc_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-28 03:14:17,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:14:17,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:14:17,887 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:14:17,929 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:14:17,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 03:14:17,989 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-28 03:14:17,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:14:17,991 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 86 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. [2024-06-28 03:14:17,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 03:14:17,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-28 03:14:18,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:14:18,010 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;@25ac104b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:14:18,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:14:18,015 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:14:18,015 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:14:18,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:14:18,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:18,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:14:18,016 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)] === [2024-06-28 03:14:18,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:18,020 INFO L85 PathProgramCache]: Analyzing trace with hash 400592535, now seen corresponding path program 1 times [2024-06-28 03:14:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:18,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679537606] [2024-06-28 03:14:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:18,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679537606] [2024-06-28 03:14:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679537606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:18,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:14:18,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042440688] [2024-06-28 03:14:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:18,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:14:18,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:18,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:14:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:14:19,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:14:19,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:19,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:19,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:14:19,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:20,651 INFO L124 PetriNetUnfolderBase]: 11591/16004 cut-off events. [2024-06-28 03:14:20,652 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-06-28 03:14:20,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32130 conditions, 16004 events. 11591/16004 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 86659 event pairs, 8931 based on Foata normal form. 1/15791 useless extension candidates. Maximal degree in co-relation 32117. Up to 15677 conditions per place. [2024-06-28 03:14:20,746 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 44 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-28 03:14:20,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 231 flow [2024-06-28 03:14:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:14:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:14:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 03:14:20,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6089743589743589 [2024-06-28 03:14:20,756 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 95 transitions. [2024-06-28 03:14:20,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 231 flow [2024-06-28 03:14:20,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:14:20,761 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-28 03:14:20,762 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} [2024-06-28 03:14:20,764 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-28 03:14:20,765 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-28 03:14:20,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:20,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:20,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:20,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:14:20,766 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)] === [2024-06-28 03:14:20,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1577601866, now seen corresponding path program 1 times [2024-06-28 03:14:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:20,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961182010] [2024-06-28 03:14:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:21,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:21,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961182010] [2024-06-28 03:14:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961182010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:21,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:21,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:14:21,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77783045] [2024-06-28 03:14:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:21,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:14:21,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:21,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:14:21,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:14:21,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:14:21,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:21,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:21,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:14:21,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:22,808 INFO L124 PetriNetUnfolderBase]: 11581/15990 cut-off events. [2024-06-28 03:14:22,809 INFO L125 PetriNetUnfolderBase]: For 2904/2904 co-relation queries the response was YES. [2024-06-28 03:14:22,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36098 conditions, 15990 events. 11581/15990 cut-off events. For 2904/2904 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 86664 event pairs, 7976 based on Foata normal form. 4/15992 useless extension candidates. Maximal degree in co-relation 36086. Up to 15642 conditions per place. [2024-06-28 03:14:22,876 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 54 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-28 03:14:22,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 323 flow [2024-06-28 03:14:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:14:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:14:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 03:14:22,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2024-06-28 03:14:22,880 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 123 transitions. [2024-06-28 03:14:22,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 323 flow [2024-06-28 03:14:22,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:14:22,883 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-28 03:14:22,884 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} [2024-06-28 03:14:22,884 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-28 03:14:22,885 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-28 03:14:22,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:22,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:22,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:22,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:14:22,888 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)] === [2024-06-28 03:14:22,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 48092885, now seen corresponding path program 1 times [2024-06-28 03:14:22,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:22,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188079776] [2024-06-28 03:14:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:23,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188079776] [2024-06-28 03:14:23,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188079776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:23,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:23,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:14:23,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611525205] [2024-06-28 03:14:23,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:23,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:14:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:14:23,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:14:24,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:14:24,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:24,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:24,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:14:24,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:25,744 INFO L124 PetriNetUnfolderBase]: 14045/19299 cut-off events. [2024-06-28 03:14:25,745 INFO L125 PetriNetUnfolderBase]: For 9571/9571 co-relation queries the response was YES. [2024-06-28 03:14:25,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47998 conditions, 19299 events. 14045/19299 cut-off events. For 9571/9571 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 104178 event pairs, 8205 based on Foata normal form. 4/19301 useless extension candidates. Maximal degree in co-relation 47984. Up to 18876 conditions per place. [2024-06-28 03:14:25,831 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 75 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-06-28 03:14:25,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 510 flow [2024-06-28 03:14:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:14:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:14:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-28 03:14:25,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-06-28 03:14:25,833 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 6 states and 174 transitions. [2024-06-28 03:14:25,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 510 flow [2024-06-28 03:14:25,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 482 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 03:14:25,837 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 256 flow [2024-06-28 03:14:25,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-28 03:14:25,838 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-28 03:14:25,838 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 256 flow [2024-06-28 03:14:25,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:25,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:25,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:25,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:14:25,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:14:25,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -227463253, now seen corresponding path program 1 times [2024-06-28 03:14:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:25,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662023265] [2024-06-28 03:14:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:26,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662023265] [2024-06-28 03:14:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662023265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:26,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:14:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298446522] [2024-06-28 03:14:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:14:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:14:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:14:27,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:14:27,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 256 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:27,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:27,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:14:27,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:28,822 INFO L124 PetriNetUnfolderBase]: 14029/19259 cut-off events. [2024-06-28 03:14:28,822 INFO L125 PetriNetUnfolderBase]: For 19375/19375 co-relation queries the response was YES. [2024-06-28 03:14:28,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53266 conditions, 19259 events. 14029/19259 cut-off events. For 19375/19375 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 103709 event pairs, 7104 based on Foata normal form. 8/19265 useless extension candidates. Maximal degree in co-relation 53250. Up to 18810 conditions per place. [2024-06-28 03:14:28,920 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 82 selfloop transitions, 20 changer transitions 0/108 dead transitions. [2024-06-28 03:14:28,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 108 transitions, 600 flow [2024-06-28 03:14:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-28 03:14:28,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412087912087912 [2024-06-28 03:14:28,922 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 256 flow. Second operand 7 states and 197 transitions. [2024-06-28 03:14:28,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 108 transitions, 600 flow [2024-06-28 03:14:28,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 108 transitions, 561 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:14:28,930 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 289 flow [2024-06-28 03:14:28,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-28 03:14:28,931 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-06-28 03:14:28,932 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 289 flow [2024-06-28 03:14:28,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:28,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:28,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:28,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:14:28,932 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)] === [2024-06-28 03:14:28,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:28,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1084622608, now seen corresponding path program 1 times [2024-06-28 03:14:28,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:28,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108728132] [2024-06-28 03:14:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:28,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:29,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108728132] [2024-06-28 03:14:29,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108728132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:29,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:29,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:14:29,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654005317] [2024-06-28 03:14:29,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:29,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:14:29,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:14:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:14:29,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:29,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:29,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:29,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:29,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:31,088 INFO L124 PetriNetUnfolderBase]: 14020/19255 cut-off events. [2024-06-28 03:14:31,088 INFO L125 PetriNetUnfolderBase]: For 30220/30220 co-relation queries the response was YES. [2024-06-28 03:14:31,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56937 conditions, 19255 events. 14020/19255 cut-off events. For 30220/30220 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 103714 event pairs, 7763 based on Foata normal form. 3/19256 useless extension candidates. Maximal degree in co-relation 56919. Up to 18888 conditions per place. [2024-06-28 03:14:31,207 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-06-28 03:14:31,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 511 flow [2024-06-28 03:14:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:14:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:14:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 03:14:31,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2024-06-28 03:14:31,209 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 289 flow. Second operand 5 states and 119 transitions. [2024-06-28 03:14:31,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 511 flow [2024-06-28 03:14:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 457 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:14:31,217 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 300 flow [2024-06-28 03:14:31,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-28 03:14:31,218 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-06-28 03:14:31,218 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 300 flow [2024-06-28 03:14:31,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:31,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:31,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:31,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:14:31,219 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)] === [2024-06-28 03:14:31,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash -736436588, now seen corresponding path program 1 times [2024-06-28 03:14:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:31,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983342644] [2024-06-28 03:14:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:31,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983342644] [2024-06-28 03:14:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983342644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:31,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:31,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:14:31,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284587996] [2024-06-28 03:14:31,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:31,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:14:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:14:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:14:32,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:32,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:32,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:32,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:32,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:33,952 INFO L124 PetriNetUnfolderBase]: 14044/19345 cut-off events. [2024-06-28 03:14:33,952 INFO L125 PetriNetUnfolderBase]: For 42506/42506 co-relation queries the response was YES. [2024-06-28 03:14:34,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61406 conditions, 19345 events. 14044/19345 cut-off events. For 42506/42506 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 103988 event pairs, 7382 based on Foata normal form. 10/19347 useless extension candidates. Maximal degree in co-relation 61386. Up to 18810 conditions per place. [2024-06-28 03:14:34,083 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 81 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2024-06-28 03:14:34,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 108 transitions, 710 flow [2024-06-28 03:14:34,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:14:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:14:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 03:14:34,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-28 03:14:34,085 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 300 flow. Second operand 6 states and 151 transitions. [2024-06-28 03:14:34,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 108 transitions, 710 flow [2024-06-28 03:14:34,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 677 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:14:34,094 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 447 flow [2024-06-28 03:14:34,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=447, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2024-06-28 03:14:34,095 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-28 03:14:34,095 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 447 flow [2024-06-28 03:14:34,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:34,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:34,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:34,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:14:34,096 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)] === [2024-06-28 03:14:34,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:34,096 INFO L85 PathProgramCache]: Analyzing trace with hash -203748305, now seen corresponding path program 1 times [2024-06-28 03:14:34,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:34,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387057912] [2024-06-28 03:14:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:34,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:34,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387057912] [2024-06-28 03:14:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387057912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:14:34,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505420364] [2024-06-28 03:14:34,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:34,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:14:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:34,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:14:34,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:14:35,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:35,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 447 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:35,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:35,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:35,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:36,889 INFO L124 PetriNetUnfolderBase]: 14066/19374 cut-off events. [2024-06-28 03:14:36,889 INFO L125 PetriNetUnfolderBase]: For 63074/63084 co-relation queries the response was YES. [2024-06-28 03:14:36,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68581 conditions, 19374 events. 14066/19374 cut-off events. For 63074/63084 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 104388 event pairs, 7406 based on Foata normal form. 11/19373 useless extension candidates. Maximal degree in co-relation 68558. Up to 18896 conditions per place. [2024-06-28 03:14:36,976 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 90 selfloop transitions, 21 changer transitions 0/116 dead transitions. [2024-06-28 03:14:36,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 857 flow [2024-06-28 03:14:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:14:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:14:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 03:14:36,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-28 03:14:36,977 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 447 flow. Second operand 6 states and 149 transitions. [2024-06-28 03:14:36,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 857 flow [2024-06-28 03:14:36,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 116 transitions, 831 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 03:14:36,991 INFO L231 Difference]: Finished difference. Result has 75 places, 86 transitions, 558 flow [2024-06-28 03:14:36,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=558, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2024-06-28 03:14:36,992 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-06-28 03:14:36,992 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 558 flow [2024-06-28 03:14:36,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:36,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:36,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:36,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:14:36,992 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)] === [2024-06-28 03:14:36,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash -174047825, now seen corresponding path program 2 times [2024-06-28 03:14:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707136077] [2024-06-28 03:14:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:36,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:37,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:37,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707136077] [2024-06-28 03:14:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707136077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:37,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:37,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:14:37,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719324891] [2024-06-28 03:14:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:37,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:14:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:37,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:14:37,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:14:37,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:37,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 558 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:37,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:37,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:37,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:39,291 INFO L124 PetriNetUnfolderBase]: 14057/19360 cut-off events. [2024-06-28 03:14:39,292 INFO L125 PetriNetUnfolderBase]: For 81755/81755 co-relation queries the response was YES. [2024-06-28 03:14:39,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72916 conditions, 19360 events. 14057/19360 cut-off events. For 81755/81755 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 104318 event pairs, 7399 based on Foata normal form. 3/19352 useless extension candidates. Maximal degree in co-relation 72890. Up to 18923 conditions per place. [2024-06-28 03:14:39,423 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 91 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-28 03:14:39,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 830 flow [2024-06-28 03:14:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:14:39,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:14:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 03:14:39,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-28 03:14:39,424 INFO L175 Difference]: Start difference. First operand has 75 places, 86 transitions, 558 flow. Second operand 6 states and 141 transitions. [2024-06-28 03:14:39,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 830 flow [2024-06-28 03:14:39,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 110 transitions, 764 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 03:14:39,475 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 531 flow [2024-06-28 03:14:39,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-06-28 03:14:39,475 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-28 03:14:39,475 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 531 flow [2024-06-28 03:14:39,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:39,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:39,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:39,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:14:39,476 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)] === [2024-06-28 03:14:39,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash -937489999, now seen corresponding path program 1 times [2024-06-28 03:14:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019982931] [2024-06-28 03:14:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:39,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:40,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019982931] [2024-06-28 03:14:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019982931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:40,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:40,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:14:40,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912033702] [2024-06-28 03:14:40,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:40,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:14:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:14:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:14:40,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:40,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 531 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:40,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:40,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:40,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:42,186 INFO L124 PetriNetUnfolderBase]: 14079/19410 cut-off events. [2024-06-28 03:14:42,187 INFO L125 PetriNetUnfolderBase]: For 91019/91019 co-relation queries the response was YES. [2024-06-28 03:14:42,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73785 conditions, 19410 events. 14079/19410 cut-off events. For 91019/91019 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 104485 event pairs, 7253 based on Foata normal form. 3/19402 useless extension candidates. Maximal degree in co-relation 73757. Up to 18926 conditions per place. [2024-06-28 03:14:42,303 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 104 selfloop transitions, 18 changer transitions 0/127 dead transitions. [2024-06-28 03:14:42,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 915 flow [2024-06-28 03:14:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 03:14:42,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 03:14:42,304 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 531 flow. Second operand 7 states and 169 transitions. [2024-06-28 03:14:42,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 915 flow [2024-06-28 03:14:42,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 871 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:14:42,345 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 586 flow [2024-06-28 03:14:42,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-06-28 03:14:42,346 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-28 03:14:42,346 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 586 flow [2024-06-28 03:14:42,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:42,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:42,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:42,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:14:42,347 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)] === [2024-06-28 03:14:42,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash -937485163, now seen corresponding path program 1 times [2024-06-28 03:14:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269172644] [2024-06-28 03:14:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:42,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:43,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269172644] [2024-06-28 03:14:43,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269172644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:43,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:43,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:14:43,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782380366] [2024-06-28 03:14:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:43,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:14:43,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:14:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:14:43,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:43,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:43,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:43,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:43,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:44,949 INFO L124 PetriNetUnfolderBase]: 14288/19700 cut-off events. [2024-06-28 03:14:44,950 INFO L125 PetriNetUnfolderBase]: For 115123/115125 co-relation queries the response was YES. [2024-06-28 03:14:45,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79429 conditions, 19700 events. 14288/19700 cut-off events. For 115123/115125 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106026 event pairs, 6681 based on Foata normal form. 12/19699 useless extension candidates. Maximal degree in co-relation 79401. Up to 18893 conditions per place. [2024-06-28 03:14:45,087 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 115 selfloop transitions, 39 changer transitions 0/159 dead transitions. [2024-06-28 03:14:45,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 159 transitions, 1338 flow [2024-06-28 03:14:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 03:14:45,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082417582417582 [2024-06-28 03:14:45,089 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 586 flow. Second operand 7 states and 185 transitions. [2024-06-28 03:14:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 159 transitions, 1338 flow [2024-06-28 03:14:45,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 159 transitions, 1271 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:14:45,139 INFO L231 Difference]: Finished difference. Result has 85 places, 112 transitions, 855 flow [2024-06-28 03:14:45,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=85, PETRI_TRANSITIONS=112} [2024-06-28 03:14:45,140 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-28 03:14:45,140 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 112 transitions, 855 flow [2024-06-28 03:14:45,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:45,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:45,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:45,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:14:45,141 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)] === [2024-06-28 03:14:45,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash -937485349, now seen corresponding path program 2 times [2024-06-28 03:14:45,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:45,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896473212] [2024-06-28 03:14:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:45,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:45,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:45,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896473212] [2024-06-28 03:14:45,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896473212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:45,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:45,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:14:45,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283187796] [2024-06-28 03:14:45,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:45,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:14:45,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:45,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:14:45,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:14:46,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:46,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 112 transitions, 855 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:46,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:46,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:46,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:47,796 INFO L124 PetriNetUnfolderBase]: 14310/19716 cut-off events. [2024-06-28 03:14:47,796 INFO L125 PetriNetUnfolderBase]: For 148510/148520 co-relation queries the response was YES. [2024-06-28 03:14:47,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87844 conditions, 19716 events. 14310/19716 cut-off events. For 148510/148520 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 105861 event pairs, 6934 based on Foata normal form. 11/19712 useless extension candidates. Maximal degree in co-relation 87812. Up to 19156 conditions per place. [2024-06-28 03:14:47,944 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 117 selfloop transitions, 35 changer transitions 0/157 dead transitions. [2024-06-28 03:14:47,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 157 transitions, 1429 flow [2024-06-28 03:14:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 03:14:47,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527472527472525 [2024-06-28 03:14:47,945 INFO L175 Difference]: Start difference. First operand has 85 places, 112 transitions, 855 flow. Second operand 7 states and 173 transitions. [2024-06-28 03:14:47,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 157 transitions, 1429 flow [2024-06-28 03:14:48,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 157 transitions, 1373 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-28 03:14:48,030 INFO L231 Difference]: Finished difference. Result has 91 places, 120 transitions, 1004 flow [2024-06-28 03:14:48,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1004, PETRI_PLACES=91, PETRI_TRANSITIONS=120} [2024-06-28 03:14:48,030 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-28 03:14:48,031 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 120 transitions, 1004 flow [2024-06-28 03:14:48,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:48,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:48,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:48,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:14:48,031 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)] === [2024-06-28 03:14:48,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1100514347, now seen corresponding path program 2 times [2024-06-28 03:14:48,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:48,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621170280] [2024-06-28 03:14:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:48,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:48,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621170280] [2024-06-28 03:14:48,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621170280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:48,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:48,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:14:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30016808] [2024-06-28 03:14:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:48,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:14:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:14:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:14:48,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:48,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 120 transitions, 1004 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:48,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:48,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:48,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:50,734 INFO L124 PetriNetUnfolderBase]: 14396/19834 cut-off events. [2024-06-28 03:14:50,735 INFO L125 PetriNetUnfolderBase]: For 180114/180116 co-relation queries the response was YES. [2024-06-28 03:14:50,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92745 conditions, 19834 events. 14396/19834 cut-off events. For 180114/180116 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106678 event pairs, 6874 based on Foata normal form. 12/19832 useless extension candidates. Maximal degree in co-relation 92710. Up to 19145 conditions per place. [2024-06-28 03:14:50,878 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 135 selfloop transitions, 31 changer transitions 0/171 dead transitions. [2024-06-28 03:14:50,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 171 transitions, 1723 flow [2024-06-28 03:14:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 03:14:50,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2024-06-28 03:14:50,879 INFO L175 Difference]: Start difference. First operand has 91 places, 120 transitions, 1004 flow. Second operand 7 states and 178 transitions. [2024-06-28 03:14:50,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 171 transitions, 1723 flow [2024-06-28 03:14:50,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 1647 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:14:50,972 INFO L231 Difference]: Finished difference. Result has 96 places, 129 transitions, 1128 flow [2024-06-28 03:14:50,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1128, PETRI_PLACES=96, PETRI_TRANSITIONS=129} [2024-06-28 03:14:50,973 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-28 03:14:50,973 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 129 transitions, 1128 flow [2024-06-28 03:14:50,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:50,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:50,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:50,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:14:50,974 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)] === [2024-06-28 03:14:50,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash -760353829, now seen corresponding path program 3 times [2024-06-28 03:14:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505317288] [2024-06-28 03:14:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505317288] [2024-06-28 03:14:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505317288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:51,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:51,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:14:51,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654452824] [2024-06-28 03:14:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:14:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:14:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:14:51,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:51,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 129 transitions, 1128 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:51,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:51,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:51,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:53,768 INFO L124 PetriNetUnfolderBase]: 14387/19818 cut-off events. [2024-06-28 03:14:53,769 INFO L125 PetriNetUnfolderBase]: For 207065/207065 co-relation queries the response was YES. [2024-06-28 03:14:53,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96051 conditions, 19818 events. 14387/19818 cut-off events. For 207065/207065 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106423 event pairs, 6923 based on Foata normal form. 3/19807 useless extension candidates. Maximal degree in co-relation 96013. Up to 19350 conditions per place. [2024-06-28 03:14:53,918 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 137 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2024-06-28 03:14:53,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 160 transitions, 1518 flow [2024-06-28 03:14:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 03:14:53,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478021978021978 [2024-06-28 03:14:53,919 INFO L175 Difference]: Start difference. First operand has 96 places, 129 transitions, 1128 flow. Second operand 7 states and 163 transitions. [2024-06-28 03:14:53,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 160 transitions, 1518 flow [2024-06-28 03:14:54,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 160 transitions, 1423 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 03:14:54,081 INFO L231 Difference]: Finished difference. Result has 100 places, 129 transitions, 1080 flow [2024-06-28 03:14:54,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1080, PETRI_PLACES=100, PETRI_TRANSITIONS=129} [2024-06-28 03:14:54,081 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-28 03:14:54,082 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 129 transitions, 1080 flow [2024-06-28 03:14:54,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:54,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:54,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:54,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:14:54,082 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)] === [2024-06-28 03:14:54,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash -760116493, now seen corresponding path program 3 times [2024-06-28 03:14:54,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:54,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178558724] [2024-06-28 03:14:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:54,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:54,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:54,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178558724] [2024-06-28 03:14:54,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178558724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:54,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:54,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:14:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430733177] [2024-06-28 03:14:54,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:54,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:14:54,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:54,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:14:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:14:54,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:54,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 129 transitions, 1080 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:54,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:54,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:54,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:14:56,749 INFO L124 PetriNetUnfolderBase]: 14411/19854 cut-off events. [2024-06-28 03:14:56,749 INFO L125 PetriNetUnfolderBase]: For 224469/224471 co-relation queries the response was YES. [2024-06-28 03:14:56,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97523 conditions, 19854 events. 14411/19854 cut-off events. For 224469/224471 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106761 event pairs, 6873 based on Foata normal form. 12/19852 useless extension candidates. Maximal degree in co-relation 97484. Up to 19294 conditions per place. [2024-06-28 03:14:56,899 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 140 selfloop transitions, 27 changer transitions 0/172 dead transitions. [2024-06-28 03:14:56,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 172 transitions, 1694 flow [2024-06-28 03:14:56,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:14:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:14:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 03:14:56,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527472527472525 [2024-06-28 03:14:56,900 INFO L175 Difference]: Start difference. First operand has 100 places, 129 transitions, 1080 flow. Second operand 7 states and 173 transitions. [2024-06-28 03:14:56,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 172 transitions, 1694 flow [2024-06-28 03:14:57,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 1633 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:14:57,061 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1188 flow [2024-06-28 03:14:57,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1188, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2024-06-28 03:14:57,062 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-28 03:14:57,062 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1188 flow [2024-06-28 03:14:57,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:57,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:14:57,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:14:57,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:14:57,063 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:14:57,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:14:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash 954073619, now seen corresponding path program 1 times [2024-06-28 03:14:57,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:14:57,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719155041] [2024-06-28 03:14:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:14:57,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:14:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:14:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:14:58,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:14:58,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719155041] [2024-06-28 03:14:58,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719155041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:14:58,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:14:58,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:14:58,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197269001] [2024-06-28 03:14:58,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:14:58,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:14:58,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:14:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:14:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:14:58,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:14:58,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1188 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:14:58,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:14:58,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:14:58,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:00,477 INFO L124 PetriNetUnfolderBase]: 14431/19881 cut-off events. [2024-06-28 03:15:00,477 INFO L125 PetriNetUnfolderBase]: For 250981/250983 co-relation queries the response was YES. [2024-06-28 03:15:00,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100060 conditions, 19881 events. 14431/19881 cut-off events. For 250981/250983 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 106737 event pairs, 6711 based on Foata normal form. 12/19880 useless extension candidates. Maximal degree in co-relation 100019. Up to 19278 conditions per place. [2024-06-28 03:15:00,633 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 138 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-28 03:15:00,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 176 transitions, 1794 flow [2024-06-28 03:15:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:15:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:15:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 03:15:00,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47802197802197804 [2024-06-28 03:15:00,635 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1188 flow. Second operand 7 states and 174 transitions. [2024-06-28 03:15:00,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 176 transitions, 1794 flow [2024-06-28 03:15:00,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 176 transitions, 1714 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:00,793 INFO L231 Difference]: Finished difference. Result has 105 places, 140 transitions, 1255 flow [2024-06-28 03:15:00,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1255, PETRI_PLACES=105, PETRI_TRANSITIONS=140} [2024-06-28 03:15:00,794 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-28 03:15:00,794 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 140 transitions, 1255 flow [2024-06-28 03:15:00,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:00,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:00,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:00,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:15:00,795 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:15:00,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:00,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1137705497, now seen corresponding path program 1 times [2024-06-28 03:15:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:00,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180477304] [2024-06-28 03:15:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:00,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:01,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:01,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180477304] [2024-06-28 03:15:01,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180477304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:01,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:01,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:15:01,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227025687] [2024-06-28 03:15:01,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:01,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:15:01,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:01,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:15:01,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:15:01,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:15:01,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 140 transitions, 1255 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:01,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:01,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:15:01,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:03,598 INFO L124 PetriNetUnfolderBase]: 13724/19169 cut-off events. [2024-06-28 03:15:03,599 INFO L125 PetriNetUnfolderBase]: For 278193/278193 co-relation queries the response was YES. [2024-06-28 03:15:03,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101033 conditions, 19169 events. 13724/19169 cut-off events. For 278193/278193 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 105899 event pairs, 6871 based on Foata normal form. 2/19157 useless extension candidates. Maximal degree in co-relation 100991. Up to 18485 conditions per place. [2024-06-28 03:15:03,724 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 129 selfloop transitions, 10 changer transitions 0/154 dead transitions. [2024-06-28 03:15:03,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 154 transitions, 1569 flow [2024-06-28 03:15:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:15:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:15:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 03:15:03,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576923076923077 [2024-06-28 03:15:03,726 INFO L175 Difference]: Start difference. First operand has 105 places, 140 transitions, 1255 flow. Second operand 5 states and 119 transitions. [2024-06-28 03:15:03,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 154 transitions, 1569 flow [2024-06-28 03:15:03,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 154 transitions, 1438 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 03:15:03,859 INFO L231 Difference]: Finished difference. Result has 105 places, 140 transitions, 1153 flow [2024-06-28 03:15:03,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1153, PETRI_PLACES=105, PETRI_TRANSITIONS=140} [2024-06-28 03:15:03,859 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-28 03:15:03,859 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 140 transitions, 1153 flow [2024-06-28 03:15:03,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:03,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:03,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:03,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:15:03,860 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)] === [2024-06-28 03:15:03,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:03,860 INFO L85 PathProgramCache]: Analyzing trace with hash 998916750, now seen corresponding path program 1 times [2024-06-28 03:15:03,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:03,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478822463] [2024-06-28 03:15:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:03,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:05,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478822463] [2024-06-28 03:15:05,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478822463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:05,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:05,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285398536] [2024-06-28 03:15:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:05,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:05,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:15:05,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 140 transitions, 1153 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:05,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:05,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:15:05,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:07,382 INFO L124 PetriNetUnfolderBase]: 14477/19931 cut-off events. [2024-06-28 03:15:07,382 INFO L125 PetriNetUnfolderBase]: For 303346/303346 co-relation queries the response was YES. [2024-06-28 03:15:07,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105624 conditions, 19931 events. 14477/19931 cut-off events. For 303346/303346 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 106875 event pairs, 6725 based on Foata normal form. 3/19920 useless extension candidates. Maximal degree in co-relation 105581. Up to 19407 conditions per place. [2024-06-28 03:15:07,581 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 170 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-28 03:15:07,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 205 transitions, 1937 flow [2024-06-28 03:15:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:15:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:15:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 03:15:07,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-28 03:15:07,585 INFO L175 Difference]: Start difference. First operand has 105 places, 140 transitions, 1153 flow. Second operand 9 states and 220 transitions. [2024-06-28 03:15:07,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 205 transitions, 1937 flow [2024-06-28 03:15:07,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 205 transitions, 1908 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:07,755 INFO L231 Difference]: Finished difference. Result has 110 places, 148 transitions, 1347 flow [2024-06-28 03:15:07,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1347, PETRI_PLACES=110, PETRI_TRANSITIONS=148} [2024-06-28 03:15:07,755 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2024-06-28 03:15:07,755 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 148 transitions, 1347 flow [2024-06-28 03:15:07,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:07,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:07,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:07,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:15:07,756 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)] === [2024-06-28 03:15:07,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1762679499, now seen corresponding path program 1 times [2024-06-28 03:15:07,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:07,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580163527] [2024-06-28 03:15:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:07,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:09,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:09,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580163527] [2024-06-28 03:15:09,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580163527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:09,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:09,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:09,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831154608] [2024-06-28 03:15:09,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:09,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:09,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:09,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:09,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:09,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:15:09,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 148 transitions, 1347 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:09,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:09,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:15:09,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:11,578 INFO L124 PetriNetUnfolderBase]: 14632/20083 cut-off events. [2024-06-28 03:15:11,578 INFO L125 PetriNetUnfolderBase]: For 352032/352034 co-relation queries the response was YES. [2024-06-28 03:15:11,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111373 conditions, 20083 events. 14632/20083 cut-off events. For 352032/352034 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 107161 event pairs, 6590 based on Foata normal form. 12/20091 useless extension candidates. Maximal degree in co-relation 111330. Up to 19525 conditions per place. [2024-06-28 03:15:11,728 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 173 selfloop transitions, 36 changer transitions 0/214 dead transitions. [2024-06-28 03:15:11,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 214 transitions, 2303 flow [2024-06-28 03:15:11,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 03:15:11,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278846153846156 [2024-06-28 03:15:11,730 INFO L175 Difference]: Start difference. First operand has 110 places, 148 transitions, 1347 flow. Second operand 8 states and 205 transitions. [2024-06-28 03:15:11,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 214 transitions, 2303 flow [2024-06-28 03:15:11,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 214 transitions, 2195 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 03:15:11,890 INFO L231 Difference]: Finished difference. Result has 115 places, 162 transitions, 1558 flow [2024-06-28 03:15:11,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1558, PETRI_PLACES=115, PETRI_TRANSITIONS=162} [2024-06-28 03:15:11,891 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-28 03:15:11,891 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 162 transitions, 1558 flow [2024-06-28 03:15:11,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:11,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:11,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:11,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:15:11,892 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)] === [2024-06-28 03:15:11,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 999006960, now seen corresponding path program 2 times [2024-06-28 03:15:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:11,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99271237] [2024-06-28 03:15:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:11,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:13,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:13,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99271237] [2024-06-28 03:15:13,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99271237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:13,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:13,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:13,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531677930] [2024-06-28 03:15:13,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:13,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:13,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:13,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:13,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:13,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:15:13,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 162 transitions, 1558 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:13,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:13,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:15:13,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:15,667 INFO L124 PetriNetUnfolderBase]: 14623/20075 cut-off events. [2024-06-28 03:15:15,667 INFO L125 PetriNetUnfolderBase]: For 408429/408429 co-relation queries the response was YES. [2024-06-28 03:15:15,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118108 conditions, 20075 events. 14623/20075 cut-off events. For 408429/408429 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 107532 event pairs, 6613 based on Foata normal form. 3/20074 useless extension candidates. Maximal degree in co-relation 118061. Up to 19640 conditions per place. [2024-06-28 03:15:15,883 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 179 selfloop transitions, 22 changer transitions 0/206 dead transitions. [2024-06-28 03:15:15,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 206 transitions, 2074 flow [2024-06-28 03:15:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 03:15:15,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45913461538461536 [2024-06-28 03:15:15,895 INFO L175 Difference]: Start difference. First operand has 115 places, 162 transitions, 1558 flow. Second operand 8 states and 191 transitions. [2024-06-28 03:15:15,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 206 transitions, 2074 flow [2024-06-28 03:15:16,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 206 transitions, 1865 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:16,231 INFO L231 Difference]: Finished difference. Result has 119 places, 162 transitions, 1404 flow [2024-06-28 03:15:16,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1404, PETRI_PLACES=119, PETRI_TRANSITIONS=162} [2024-06-28 03:15:16,231 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-28 03:15:16,231 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 162 transitions, 1404 flow [2024-06-28 03:15:16,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:16,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:16,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:16,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:15:16,232 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:15:16,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:16,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1766398414, now seen corresponding path program 3 times [2024-06-28 03:15:16,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:16,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344240492] [2024-06-28 03:15:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:16,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:17,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:17,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344240492] [2024-06-28 03:15:17,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344240492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:17,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:17,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:17,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482230199] [2024-06-28 03:15:17,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:17,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:17,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:17,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:15:17,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 162 transitions, 1404 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:17,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:17,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:15:17,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:20,165 INFO L124 PetriNetUnfolderBase]: 14645/20107 cut-off events. [2024-06-28 03:15:20,165 INFO L125 PetriNetUnfolderBase]: For 435115/435128 co-relation queries the response was YES. [2024-06-28 03:15:20,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119024 conditions, 20107 events. 14645/20107 cut-off events. For 435115/435128 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 107668 event pairs, 6620 based on Foata normal form. 13/20115 useless extension candidates. Maximal degree in co-relation 118976. Up to 19595 conditions per place. [2024-06-28 03:15:20,307 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 163 selfloop transitions, 39 changer transitions 0/207 dead transitions. [2024-06-28 03:15:20,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 207 transitions, 2000 flow [2024-06-28 03:15:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 03:15:20,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 03:15:20,309 INFO L175 Difference]: Start difference. First operand has 119 places, 162 transitions, 1404 flow. Second operand 8 states and 192 transitions. [2024-06-28 03:15:20,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 207 transitions, 2000 flow [2024-06-28 03:15:20,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 207 transitions, 1945 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:15:20,535 INFO L231 Difference]: Finished difference. Result has 120 places, 166 transitions, 1532 flow [2024-06-28 03:15:20,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1532, PETRI_PLACES=120, PETRI_TRANSITIONS=166} [2024-06-28 03:15:20,536 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-28 03:15:20,536 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 166 transitions, 1532 flow [2024-06-28 03:15:20,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:20,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:20,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:20,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:15:20,537 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)] === [2024-06-28 03:15:20,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:20,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1766398569, now seen corresponding path program 2 times [2024-06-28 03:15:20,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:20,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812245028] [2024-06-28 03:15:20,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:21,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:21,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:21,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812245028] [2024-06-28 03:15:21,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812245028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:21,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:21,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:21,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519399794] [2024-06-28 03:15:21,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:21,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:15:21,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 166 transitions, 1532 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:21,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:21,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:15:21,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:24,157 INFO L124 PetriNetUnfolderBase]: 14916/20466 cut-off events. [2024-06-28 03:15:24,157 INFO L125 PetriNetUnfolderBase]: For 489863/489870 co-relation queries the response was YES. [2024-06-28 03:15:24,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126286 conditions, 20466 events. 14916/20466 cut-off events. For 489863/489870 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 109371 event pairs, 6399 based on Foata normal form. 16/20476 useless extension candidates. Maximal degree in co-relation 126237. Up to 19151 conditions per place. [2024-06-28 03:15:24,299 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 155 selfloop transitions, 78 changer transitions 0/238 dead transitions. [2024-06-28 03:15:24,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 238 transitions, 2856 flow [2024-06-28 03:15:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 03:15:24,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168269230769231 [2024-06-28 03:15:24,300 INFO L175 Difference]: Start difference. First operand has 120 places, 166 transitions, 1532 flow. Second operand 8 states and 215 transitions. [2024-06-28 03:15:24,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 238 transitions, 2856 flow [2024-06-28 03:15:24,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 238 transitions, 2705 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 03:15:24,560 INFO L231 Difference]: Finished difference. Result has 123 places, 180 transitions, 1804 flow [2024-06-28 03:15:24,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1804, PETRI_PLACES=123, PETRI_TRANSITIONS=180} [2024-06-28 03:15:24,561 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-28 03:15:24,561 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 180 transitions, 1804 flow [2024-06-28 03:15:24,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:24,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:24,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:24,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:15:24,561 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)] === [2024-06-28 03:15:24,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:24,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1002731765, now seen corresponding path program 3 times [2024-06-28 03:15:24,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:24,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310035227] [2024-06-28 03:15:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:24,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:25,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:25,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310035227] [2024-06-28 03:15:25,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310035227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875439148] [2024-06-28 03:15:25,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:25,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:25,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:15:25,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 180 transitions, 1804 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:25,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:25,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:15:25,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:28,196 INFO L124 PetriNetUnfolderBase]: 14940/20498 cut-off events. [2024-06-28 03:15:28,196 INFO L125 PetriNetUnfolderBase]: For 551947/551954 co-relation queries the response was YES. [2024-06-28 03:15:28,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132955 conditions, 20498 events. 14940/20498 cut-off events. For 551947/551954 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 109622 event pairs, 6385 based on Foata normal form. 16/20508 useless extension candidates. Maximal degree in co-relation 132904. Up to 19181 conditions per place. [2024-06-28 03:15:28,374 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 147 selfloop transitions, 87 changer transitions 0/239 dead transitions. [2024-06-28 03:15:28,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 239 transitions, 2866 flow [2024-06-28 03:15:28,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:28,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 03:15:28,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2024-06-28 03:15:28,375 INFO L175 Difference]: Start difference. First operand has 123 places, 180 transitions, 1804 flow. Second operand 8 states and 212 transitions. [2024-06-28 03:15:28,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 239 transitions, 2866 flow [2024-06-28 03:15:28,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 239 transitions, 2680 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-28 03:15:28,711 INFO L231 Difference]: Finished difference. Result has 128 places, 185 transitions, 1912 flow [2024-06-28 03:15:28,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1912, PETRI_PLACES=128, PETRI_TRANSITIONS=185} [2024-06-28 03:15:28,711 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-28 03:15:28,711 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 185 transitions, 1912 flow [2024-06-28 03:15:28,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:28,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:28,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:28,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:15:28,712 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)] === [2024-06-28 03:15:28,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1497681757, now seen corresponding path program 4 times [2024-06-28 03:15:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:28,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215301242] [2024-06-28 03:15:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:29,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215301242] [2024-06-28 03:15:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215301242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:29,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:29,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:29,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811671955] [2024-06-28 03:15:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:29,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:15:29,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 185 transitions, 1912 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:29,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:29,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:15:29,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:32,397 INFO L124 PetriNetUnfolderBase]: 15134/20758 cut-off events. [2024-06-28 03:15:32,397 INFO L125 PetriNetUnfolderBase]: For 587929/587931 co-relation queries the response was YES. [2024-06-28 03:15:32,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134674 conditions, 20758 events. 15134/20758 cut-off events. For 587929/587931 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 110889 event pairs, 6638 based on Foata normal form. 12/20766 useless extension candidates. Maximal degree in co-relation 134621. Up to 19839 conditions per place. [2024-06-28 03:15:32,575 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 190 selfloop transitions, 51 changer transitions 0/246 dead transitions. [2024-06-28 03:15:32,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 246 transitions, 3142 flow [2024-06-28 03:15:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 03:15:32,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278846153846156 [2024-06-28 03:15:32,576 INFO L175 Difference]: Start difference. First operand has 128 places, 185 transitions, 1912 flow. Second operand 8 states and 205 transitions. [2024-06-28 03:15:32,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 246 transitions, 3142 flow [2024-06-28 03:15:32,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 246 transitions, 2965 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 03:15:32,975 INFO L231 Difference]: Finished difference. Result has 134 places, 196 transitions, 2128 flow [2024-06-28 03:15:32,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2128, PETRI_PLACES=134, PETRI_TRANSITIONS=196} [2024-06-28 03:15:32,975 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2024-06-28 03:15:32,975 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 196 transitions, 2128 flow [2024-06-28 03:15:32,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:32,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:15:32,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:15:32,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:15:32,976 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)] === [2024-06-28 03:15:32,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:15:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2096131442, now seen corresponding path program 4 times [2024-06-28 03:15:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:15:32,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714152694] [2024-06-28 03:15:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:15:32,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:15:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:15:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:15:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:15:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714152694] [2024-06-28 03:15:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714152694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:15:34,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:15:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:15:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392486508] [2024-06-28 03:15:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:15:34,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:15:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:15:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:15:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:15:34,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 03:15:34,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 196 transitions, 2128 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:15:34,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:15:34,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 03:15:34,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:15:37,295 INFO L124 PetriNetUnfolderBase]: 15125/20747 cut-off events. [2024-06-28 03:15:37,296 INFO L125 PetriNetUnfolderBase]: For 648444/648444 co-relation queries the response was YES. [2024-06-28 03:15:37,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137925 conditions, 20747 events. 15125/20747 cut-off events. For 648444/648444 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 110776 event pairs, 6677 based on Foata normal form. 3/20746 useless extension candidates. Maximal degree in co-relation 137869. Up to 20324 conditions per place. [2024-06-28 03:15:37,484 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 211 selfloop transitions, 22 changer transitions 0/238 dead transitions. [2024-06-28 03:15:37,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 238 transitions, 2798 flow [2024-06-28 03:15:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:15:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:15:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 03:15:37,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471153846153844 [2024-06-28 03:15:37,485 INFO L175 Difference]: Start difference. First operand has 134 places, 196 transitions, 2128 flow. Second operand 8 states and 185 transitions. [2024-06-28 03:15:37,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 238 transitions, 2798 flow