./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix015.oepc.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/mix015.oepc.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/mix015.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix015.oepc.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 03:02:19,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:02:19,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:02:19,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:02:19,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:02:19,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:02:19,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:02:19,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:02:19,932 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:02:19,936 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:02:19,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:02:19,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:02:19,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:02:19,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:02:19,938 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:02:19,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:02:19,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:02:19,939 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:02:19,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:02:19,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:02:19,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:02:19,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:02:19,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:02:19,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:02:19,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:02:19,941 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:02:19,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:02:19,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:02:19,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:02:19,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:02:19,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:02:19,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:02:19,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:02:19,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:02:19,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:02:19,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:02:19,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:02:19,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:02:19,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:02:19,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:02:19,945 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:02:19,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:02:19,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:02:19,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:02:20,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:02:20,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:02:20,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:02:20,235 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:02:20,236 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:02:20,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix015.oepc.yml/witness.yml [2024-06-28 03:02:20,447 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:02:20,447 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:02:20,448 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix015.oepc.i [2024-06-28 03:02:21,628 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:02:21,915 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:02:21,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix015.oepc.i [2024-06-28 03:02:21,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97222b117/a84c542e599a402196a0e6aca0a46ee7/FLAG3f7ee9ff8 [2024-06-28 03:02:21,950 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97222b117/a84c542e599a402196a0e6aca0a46ee7 [2024-06-28 03:02:21,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:02:21,953 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:02:21,956 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:02:21,956 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:02:21,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:02:21,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:02:20" (1/2) ... [2024-06-28 03:02:21,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f288b81 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:02:21, skipping insertion in model container [2024-06-28 03:02:21,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:02:20" (1/2) ... [2024-06-28 03:02:21,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38a1ab95 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:02:21, skipping insertion in model container [2024-06-28 03:02:21,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:02:21" (2/2) ... [2024-06-28 03:02:21,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f288b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:21, skipping insertion in model container [2024-06-28 03:02:21,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:02:21" (2/2) ... [2024-06-28 03:02:21,966 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:02:22,079 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:02:22,081 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 03:02:22,081 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_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$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 03:02:22,081 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || a$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) [2024-06-28 03:02:22,081 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:02:22,082 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-28 03:02:22,129 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:02:22,520 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:02:22,534 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:02:22,678 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:02:22,714 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:02:22,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22 WrapperNode [2024-06-28 03:02:22,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:02:22,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:02:22,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:02:22,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:02:22,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,788 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 135 [2024-06-28 03:02:22,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:02:22,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:02:22,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:02:22,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:02:22,800 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,825 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 03:02:22,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:02:22,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:02:22,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:02:22,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:02:22,865 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (1/1) ... [2024-06-28 03:02:22,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:02:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:02:22,945 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 03:02:22,954 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 03:02:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:02:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:02:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:02:22,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:02:22,992 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:02:22,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:02:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:02:22,993 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:02:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:02:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:02:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:02:22,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:02:22,995 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 03:02:23,159 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:02:23,161 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:02:23,535 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:02:23,535 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:02:23,710 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:02:23,710 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:02:23,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:02:23 BoogieIcfgContainer [2024-06-28 03:02:23,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:02:23,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:02:23,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:02:23,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:02:23,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:02:20" (1/4) ... [2024-06-28 03:02:23,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c6b11 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:02:23, skipping insertion in model container [2024-06-28 03:02:23,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:02:21" (2/4) ... [2024-06-28 03:02:23,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c6b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:02:23, skipping insertion in model container [2024-06-28 03:02:23,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:22" (3/4) ... [2024-06-28 03:02:23,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659c6b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:02:23, skipping insertion in model container [2024-06-28 03:02:23,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:02:23" (4/4) ... [2024-06-28 03:02:23,722 INFO L112 eAbstractionObserver]: Analyzing ICFG mix015.oepc.i [2024-06-28 03:02:23,736 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:02:23,736 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:02:23,736 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:02:23,789 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:02:23,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 03:02:23,863 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-28 03:02:23,864 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:02:23,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:02:23,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 03:02:23,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-28 03:02:23,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:02:23,892 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;@c9b15ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:02:23,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:02:23,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:02:23,897 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:02:23,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:02:23,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:23,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:02:23,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:23,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:23,904 INFO L85 PathProgramCache]: Analyzing trace with hash 381748823, now seen corresponding path program 1 times [2024-06-28 03:02:23,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:23,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013916377] [2024-06-28 03:02:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:23,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:25,225 INFO 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 03:02:25,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013916377] [2024-06-28 03:02:25,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013916377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:25,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:25,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:02:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127330911] [2024-06-28 03:02:25,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:25,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:02:25,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:02:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:02:25,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 03:02:25,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 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 03:02:25,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:25,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 03:02:25,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:25,785 INFO L124 PetriNetUnfolderBase]: 1363/2133 cut-off events. [2024-06-28 03:02:25,785 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 03:02:25,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 2133 events. 1363/2133 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10835 event pairs, 964 based on Foata normal form. 1/2085 useless extension candidates. Maximal degree in co-relation 4245. Up to 2037 conditions per place. [2024-06-28 03:02:25,802 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 32 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 03:02:25,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 175 flow [2024-06-28 03:02:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:02:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:02:25,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-28 03:02:25,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-06-28 03:02:25,815 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 81 transitions. [2024-06-28 03:02:25,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 175 flow [2024-06-28 03:02:25,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:25,821 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-28 03:02:25,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 03:02:25,826 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-28 03:02:25,826 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-28 03:02:25,827 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 03:02:25,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:25,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:25,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:02:25,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:25,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:25,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1788670246, now seen corresponding path program 1 times [2024-06-28 03:02:25,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:25,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544412268] [2024-06-28 03:02:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:25,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:26,976 INFO 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 03:02:26,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:26,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544412268] [2024-06-28 03:02:26,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544412268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:26,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:26,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:02:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896351971] [2024-06-28 03:02:26,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:26,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:02:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:02:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:02:27,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 03:02:27,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 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 03:02:27,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:27,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 03:02:27,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:27,466 INFO L124 PetriNetUnfolderBase]: 1357/2124 cut-off events. [2024-06-28 03:02:27,466 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2024-06-28 03:02:27,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4791 conditions, 2124 events. 1357/2124 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10768 event pairs, 840 based on Foata normal form. 3/2112 useless extension candidates. Maximal degree in co-relation 4779. Up to 2013 conditions per place. [2024-06-28 03:02:27,480 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 39 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 03:02:27,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 242 flow [2024-06-28 03:02:27,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:02:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:02:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-06-28 03:02:27,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-06-28 03:02:27,484 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 105 transitions. [2024-06-28 03:02:27,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 242 flow [2024-06-28 03:02:27,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:02:27,491 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-28 03:02:27,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-28 03:02:27,492 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-28 03:02:27,493 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-28 03:02:27,493 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 03:02:27,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:27,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:27,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:02:27,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:27,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash -385795884, now seen corresponding path program 1 times [2024-06-28 03:02:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:27,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118109856] [2024-06-28 03:02:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118109856] [2024-06-28 03:02:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118109856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:02:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237205086] [2024-06-28 03:02:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:28,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:02:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:02:28,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:02:28,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 03:02:28,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:28,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:28,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 03:02:28,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:29,337 INFO L124 PetriNetUnfolderBase]: 1598/2489 cut-off events. [2024-06-28 03:02:29,337 INFO L125 PetriNetUnfolderBase]: For 1293/1293 co-relation queries the response was YES. [2024-06-28 03:02:29,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6201 conditions, 2489 events. 1598/2489 cut-off events. For 1293/1293 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12532 event pairs, 915 based on Foata normal form. 3/2478 useless extension candidates. Maximal degree in co-relation 6187. Up to 2350 conditions per place. [2024-06-28 03:02:29,353 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 47 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-28 03:02:29,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 322 flow [2024-06-28 03:02:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:02:29,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:02:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 03:02:29,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-06-28 03:02:29,357 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 5 states and 125 transitions. [2024-06-28 03:02:29,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 322 flow [2024-06-28 03:02:29,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 308 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:02:29,360 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 176 flow [2024-06-28 03:02:29,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 03:02:29,361 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2024-06-28 03:02:29,362 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 176 flow [2024-06-28 03:02:29,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:29,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:29,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:29,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:02:29,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:29,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash 703585813, now seen corresponding path program 1 times [2024-06-28 03:02:29,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:29,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979114901] [2024-06-28 03:02:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:29,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:30,768 INFO 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 03:02:30,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:30,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979114901] [2024-06-28 03:02:30,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979114901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:30,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:30,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:02:30,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444526867] [2024-06-28 03:02:30,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:30,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:02:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:02:30,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:02:30,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 03:02:30,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 176 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 03:02:30,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:30,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 03:02:30,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:31,321 INFO L124 PetriNetUnfolderBase]: 1592/2479 cut-off events. [2024-06-28 03:02:31,322 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-06-28 03:02:31,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6771 conditions, 2479 events. 1592/2479 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12511 event pairs, 791 based on Foata normal form. 3/2474 useless extension candidates. Maximal degree in co-relation 6756. Up to 2326 conditions per place. [2024-06-28 03:02:31,339 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 54 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-28 03:02:31,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 400 flow [2024-06-28 03:02:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:02:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:02:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 03:02:31,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-06-28 03:02:31,341 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 176 flow. Second operand 6 states and 148 transitions. [2024-06-28 03:02:31,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 400 flow [2024-06-28 03:02:31,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 376 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:31,344 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 212 flow [2024-06-28 03:02:31,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-28 03:02:31,345 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-06-28 03:02:31,345 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 212 flow [2024-06-28 03:02:31,346 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 03:02:31,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:31,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:31,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:02:31,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:31,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash -472018907, now seen corresponding path program 1 times [2024-06-28 03:02:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942270972] [2024-06-28 03:02:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:31,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942270972] [2024-06-28 03:02:32,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942270972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:32,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:02:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549927221] [2024-06-28 03:02:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:32,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:02:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:02:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:02:32,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:02:32,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 212 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 03:02:32,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:32,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:02:32,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:32,803 INFO L124 PetriNetUnfolderBase]: 1740/2794 cut-off events. [2024-06-28 03:02:32,803 INFO L125 PetriNetUnfolderBase]: For 4262/4262 co-relation queries the response was YES. [2024-06-28 03:02:32,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8073 conditions, 2794 events. 1740/2794 cut-off events. For 4262/4262 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14479 event pairs, 933 based on Foata normal form. 4/2798 useless extension candidates. Maximal degree in co-relation 8056. Up to 2573 conditions per place. [2024-06-28 03:02:32,826 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 46 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-28 03:02:32,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 366 flow [2024-06-28 03:02:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:02:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:02:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-06-28 03:02:32,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2024-06-28 03:02:32,827 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 212 flow. Second operand 5 states and 103 transitions. [2024-06-28 03:02:32,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 366 flow [2024-06-28 03:02:32,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 332 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:32,831 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 224 flow [2024-06-28 03:02:32,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 03:02:32,832 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2024-06-28 03:02:32,832 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 224 flow [2024-06-28 03:02:32,833 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 03:02:32,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:32,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:32,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:02:32,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:32,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1836145652, now seen corresponding path program 1 times [2024-06-28 03:02:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:32,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466426456] [2024-06-28 03:02:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:34,943 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 03:02:34,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466426456] [2024-06-28 03:02:34,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466426456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:34,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:34,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:34,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220033737] [2024-06-28 03:02:34,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:34,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:34,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:34,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:34,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:35,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:02:35,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:35,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:35,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:02:35,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:35,702 INFO L124 PetriNetUnfolderBase]: 1817/2858 cut-off events. [2024-06-28 03:02:35,702 INFO L125 PetriNetUnfolderBase]: For 5804/5804 co-relation queries the response was YES. [2024-06-28 03:02:35,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8875 conditions, 2858 events. 1817/2858 cut-off events. For 5804/5804 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14491 event pairs, 724 based on Foata normal form. 3/2861 useless extension candidates. Maximal degree in co-relation 8857. Up to 2625 conditions per place. [2024-06-28 03:02:35,723 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 72 selfloop transitions, 19 changer transitions 0/97 dead transitions. [2024-06-28 03:02:35,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 548 flow [2024-06-28 03:02:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:02:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:02:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 03:02:35,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436046511627907 [2024-06-28 03:02:35,725 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 224 flow. Second operand 8 states and 187 transitions. [2024-06-28 03:02:35,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 548 flow [2024-06-28 03:02:35,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 97 transitions, 526 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:35,732 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 296 flow [2024-06-28 03:02:35,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=296, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-06-28 03:02:35,735 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-06-28 03:02:35,736 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 296 flow [2024-06-28 03:02:35,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:35,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:35,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:35,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:02:35,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:35,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1752530566, now seen corresponding path program 1 times [2024-06-28 03:02:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:35,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514693412] [2024-06-28 03:02:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:35,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:36,800 INFO 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 03:02:36,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:36,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514693412] [2024-06-28 03:02:36,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514693412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:36,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:02:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724109136] [2024-06-28 03:02:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:36,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:02:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:02:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:02:36,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:02:36,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 296 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 03:02:36,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:36,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:02:36,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:37,386 INFO L124 PetriNetUnfolderBase]: 1772/2823 cut-off events. [2024-06-28 03:02:37,386 INFO L125 PetriNetUnfolderBase]: For 8227/8227 co-relation queries the response was YES. [2024-06-28 03:02:37,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9555 conditions, 2823 events. 1772/2823 cut-off events. For 8227/8227 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14556 event pairs, 679 based on Foata normal form. 4/2826 useless extension candidates. Maximal degree in co-relation 9535. Up to 2571 conditions per place. [2024-06-28 03:02:37,408 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 63 selfloop transitions, 16 changer transitions 0/86 dead transitions. [2024-06-28 03:02:37,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 586 flow [2024-06-28 03:02:37,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:02:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:02:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 03:02:37,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:02:37,410 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 296 flow. Second operand 6 states and 129 transitions. [2024-06-28 03:02:37,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 586 flow [2024-06-28 03:02:37,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 536 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:02:37,416 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 358 flow [2024-06-28 03:02:37,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-28 03:02:37,417 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-06-28 03:02:37,417 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 358 flow [2024-06-28 03:02:37,418 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 03:02:37,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:37,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:37,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:02:37,418 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:37,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1546372782, now seen corresponding path program 1 times [2024-06-28 03:02:37,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:37,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934839183] [2024-06-28 03:02:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:39,736 INFO 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 03:02:39,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:39,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934839183] [2024-06-28 03:02:39,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934839183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:39,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:39,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:39,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124997475] [2024-06-28 03:02:39,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:39,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:02:39,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 358 flow. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:39,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:39,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:02:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:40,541 INFO L124 PetriNetUnfolderBase]: 1846/2876 cut-off events. [2024-06-28 03:02:40,542 INFO L125 PetriNetUnfolderBase]: For 10861/10861 co-relation queries the response was YES. [2024-06-28 03:02:40,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10546 conditions, 2876 events. 1846/2876 cut-off events. For 10861/10861 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14486 event pairs, 554 based on Foata normal form. 6/2882 useless extension candidates. Maximal degree in co-relation 10524. Up to 2635 conditions per place. [2024-06-28 03:02:40,560 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 85 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2024-06-28 03:02:40,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 112 transitions, 706 flow [2024-06-28 03:02:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:40,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-28 03:02:40,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297157622739018 [2024-06-28 03:02:40,564 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 358 flow. Second operand 9 states and 205 transitions. [2024-06-28 03:02:40,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 112 transitions, 706 flow [2024-06-28 03:02:40,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 112 transitions, 688 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 03:02:40,572 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 409 flow [2024-06-28 03:02:40,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=409, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-28 03:02:40,575 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-06-28 03:02:40,575 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 409 flow [2024-06-28 03:02:40,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:40,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:40,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:40,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:02:40,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:40,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:40,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1364107544, now seen corresponding path program 2 times [2024-06-28 03:02:40,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:40,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161822226] [2024-06-28 03:02:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:40,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:41,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:41,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161822226] [2024-06-28 03:02:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161822226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:41,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:41,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:02:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880718443] [2024-06-28 03:02:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:02:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:02:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:02:41,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:02:41,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 409 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 03:02:41,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:41,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:02:41,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:41,983 INFO L124 PetriNetUnfolderBase]: 1753/2779 cut-off events. [2024-06-28 03:02:41,983 INFO L125 PetriNetUnfolderBase]: For 13536/13536 co-relation queries the response was YES. [2024-06-28 03:02:41,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10728 conditions, 2779 events. 1753/2779 cut-off events. For 13536/13536 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14354 event pairs, 655 based on Foata normal form. 4/2783 useless extension candidates. Maximal degree in co-relation 10703. Up to 2581 conditions per place. [2024-06-28 03:02:42,001 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 63 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2024-06-28 03:02:42,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 599 flow [2024-06-28 03:02:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:02:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:02:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-28 03:02:42,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:02:42,004 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 409 flow. Second operand 6 states and 120 transitions. [2024-06-28 03:02:42,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 599 flow [2024-06-28 03:02:42,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 81 transitions, 524 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:42,017 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 364 flow [2024-06-28 03:02:42,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=364, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-06-28 03:02:42,018 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 24 predicate places. [2024-06-28 03:02:42,018 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 364 flow [2024-06-28 03:02:42,018 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 03:02:42,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:42,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:42,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:02:42,019 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:42,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1505949030, now seen corresponding path program 1 times [2024-06-28 03:02:42,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:42,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983772555] [2024-06-28 03:02:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:43,124 INFO 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 03:02:43,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:43,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983772555] [2024-06-28 03:02:43,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983772555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:43,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:43,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:43,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079953379] [2024-06-28 03:02:43,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:43,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:43,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:43,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:43,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:43,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:43,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:43,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:43,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:43,800 INFO L124 PetriNetUnfolderBase]: 1874/2906 cut-off events. [2024-06-28 03:02:43,800 INFO L125 PetriNetUnfolderBase]: For 16103/16103 co-relation queries the response was YES. [2024-06-28 03:02:43,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11360 conditions, 2906 events. 1874/2906 cut-off events. For 16103/16103 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14603 event pairs, 619 based on Foata normal form. 4/2909 useless extension candidates. Maximal degree in co-relation 11333. Up to 2649 conditions per place. [2024-06-28 03:02:43,814 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 72 selfloop transitions, 24 changer transitions 0/101 dead transitions. [2024-06-28 03:02:43,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 728 flow [2024-06-28 03:02:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:02:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:02:43,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-28 03:02:43,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48172757475083056 [2024-06-28 03:02:43,816 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 364 flow. Second operand 7 states and 145 transitions. [2024-06-28 03:02:43,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 728 flow [2024-06-28 03:02:43,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 696 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:02:43,825 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 450 flow [2024-06-28 03:02:43,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=450, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-28 03:02:43,826 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-06-28 03:02:43,826 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 450 flow [2024-06-28 03:02:43,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:43,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:43,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:43,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:02:43,827 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:43,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash -427357762, now seen corresponding path program 2 times [2024-06-28 03:02:43,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:43,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826826498] [2024-06-28 03:02:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:43,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:44,879 INFO 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 03:02:44,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:44,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826826498] [2024-06-28 03:02:44,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826826498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:44,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:44,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:44,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144060542] [2024-06-28 03:02:44,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:44,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:44,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:44,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:44,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:44,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:44,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:44,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:45,429 INFO L124 PetriNetUnfolderBase]: 1896/2938 cut-off events. [2024-06-28 03:02:45,429 INFO L125 PetriNetUnfolderBase]: For 19674/19674 co-relation queries the response was YES. [2024-06-28 03:02:45,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12200 conditions, 2938 events. 1896/2938 cut-off events. For 19674/19674 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14780 event pairs, 626 based on Foata normal form. 4/2941 useless extension candidates. Maximal degree in co-relation 12173. Up to 2668 conditions per place. [2024-06-28 03:02:45,444 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 70 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-28 03:02:45,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 101 transitions, 788 flow [2024-06-28 03:02:45,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:02:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:02:45,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 03:02:45,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-28 03:02:45,446 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 450 flow. Second operand 7 states and 143 transitions. [2024-06-28 03:02:45,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 101 transitions, 788 flow [2024-06-28 03:02:45,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 740 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:45,463 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 496 flow [2024-06-28 03:02:45,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=496, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-06-28 03:02:45,463 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-06-28 03:02:45,464 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 496 flow [2024-06-28 03:02:45,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:45,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:45,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:45,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:02:45,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:45,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:45,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1964504924, now seen corresponding path program 3 times [2024-06-28 03:02:45,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:45,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075625900] [2024-06-28 03:02:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:45,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:46,448 INFO 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 03:02:46,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:46,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075625900] [2024-06-28 03:02:46,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075625900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:46,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:46,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:46,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485356479] [2024-06-28 03:02:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:46,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:46,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:46,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:46,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:46,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:46,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 496 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:46,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:46,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:46,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:47,024 INFO L124 PetriNetUnfolderBase]: 1886/2927 cut-off events. [2024-06-28 03:02:47,024 INFO L125 PetriNetUnfolderBase]: For 22118/22118 co-relation queries the response was YES. [2024-06-28 03:02:47,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12424 conditions, 2927 events. 1886/2927 cut-off events. For 22118/22118 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14709 event pairs, 650 based on Foata normal form. 4/2931 useless extension candidates. Maximal degree in co-relation 12395. Up to 2749 conditions per place. [2024-06-28 03:02:47,038 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 76 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-06-28 03:02:47,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 95 transitions, 732 flow [2024-06-28 03:02:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:02:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:02:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:02:47,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:02:47,040 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 496 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:02:47,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 95 transitions, 732 flow [2024-06-28 03:02:47,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 664 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:47,064 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 464 flow [2024-06-28 03:02:47,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=464, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2024-06-28 03:02:47,065 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-06-28 03:02:47,065 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 464 flow [2024-06-28 03:02:47,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:47,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:47,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:02:47,066 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:47,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash 662648144, now seen corresponding path program 1 times [2024-06-28 03:02:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:47,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659592323] [2024-06-28 03:02:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:47,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:48,654 INFO 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 03:02:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659592323] [2024-06-28 03:02:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659592323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:48,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274507177] [2024-06-28 03:02:48,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:48,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:48,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:48,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 464 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:48,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:48,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:48,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:49,470 INFO L124 PetriNetUnfolderBase]: 2196/3376 cut-off events. [2024-06-28 03:02:49,470 INFO L125 PetriNetUnfolderBase]: For 29093/29093 co-relation queries the response was YES. [2024-06-28 03:02:49,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14238 conditions, 3376 events. 2196/3376 cut-off events. For 29093/29093 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16719 event pairs, 811 based on Foata normal form. 4/3380 useless extension candidates. Maximal degree in co-relation 14208. Up to 3176 conditions per place. [2024-06-28 03:02:49,484 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 75 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-06-28 03:02:49,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 743 flow [2024-06-28 03:02:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:02:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:02:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:02:49,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853820598006643 [2024-06-28 03:02:49,485 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 464 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:02:49,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 743 flow [2024-06-28 03:02:49,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 686 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:49,502 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 503 flow [2024-06-28 03:02:49,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-06-28 03:02:49,502 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 34 predicate places. [2024-06-28 03:02:49,503 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 503 flow [2024-06-28 03:02:49,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:49,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:49,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:49,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:02:49,503 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:49,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1122138237, now seen corresponding path program 1 times [2024-06-28 03:02:49,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:49,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233393936] [2024-06-28 03:02:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:49,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:50,261 INFO 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 03:02:50,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233393936] [2024-06-28 03:02:50,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233393936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:50,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:50,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:02:50,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081005874] [2024-06-28 03:02:50,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:50,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:02:50,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:50,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:02:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:02:50,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:50,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 503 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:50,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:50,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:50,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:50,834 INFO L124 PetriNetUnfolderBase]: 2382/3631 cut-off events. [2024-06-28 03:02:50,834 INFO L125 PetriNetUnfolderBase]: For 37862/37862 co-relation queries the response was YES. [2024-06-28 03:02:50,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16300 conditions, 3631 events. 2382/3631 cut-off events. For 37862/37862 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 17797 event pairs, 981 based on Foata normal form. 1/3632 useless extension candidates. Maximal degree in co-relation 16268. Up to 3524 conditions per place. [2024-06-28 03:02:50,856 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 72 selfloop transitions, 8 changer transitions 0/90 dead transitions. [2024-06-28 03:02:50,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 707 flow [2024-06-28 03:02:50,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:02:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:02:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 03:02:50,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-06-28 03:02:50,858 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 503 flow. Second operand 5 states and 93 transitions. [2024-06-28 03:02:50,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 707 flow [2024-06-28 03:02:50,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 660 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:50,916 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 508 flow [2024-06-28 03:02:50,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-06-28 03:02:50,917 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-06-28 03:02:50,917 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 508 flow [2024-06-28 03:02:50,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:50,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:50,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:50,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:02:50,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:50,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:50,919 INFO L85 PathProgramCache]: Analyzing trace with hash -560368807, now seen corresponding path program 1 times [2024-06-28 03:02:50,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:50,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421512766] [2024-06-28 03:02:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:50,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421512766] [2024-06-28 03:02:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421512766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:52,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:52,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975531194] [2024-06-28 03:02:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:52,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:52,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:52,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:52,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:52,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:52,974 INFO L124 PetriNetUnfolderBase]: 2429/3717 cut-off events. [2024-06-28 03:02:52,974 INFO L125 PetriNetUnfolderBase]: For 44628/44649 co-relation queries the response was YES. [2024-06-28 03:02:52,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17338 conditions, 3717 events. 2429/3717 cut-off events. For 44628/44649 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19097 event pairs, 1142 based on Foata normal form. 4/3681 useless extension candidates. Maximal degree in co-relation 17305. Up to 3326 conditions per place. [2024-06-28 03:02:52,993 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 93 selfloop transitions, 39 changer transitions 0/139 dead transitions. [2024-06-28 03:02:52,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 139 transitions, 1095 flow [2024-06-28 03:02:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:02:52,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:02:52,994 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 508 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:02:52,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 139 transitions, 1095 flow [2024-06-28 03:02:53,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 139 transitions, 1063 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:53,069 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 809 flow [2024-06-28 03:02:53,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=809, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-06-28 03:02:53,070 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2024-06-28 03:02:53,070 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 809 flow [2024-06-28 03:02:53,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:53,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:53,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:53,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:02:53,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:53,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1649966873, now seen corresponding path program 2 times [2024-06-28 03:02:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474557286] [2024-06-28 03:02:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:54,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:54,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474557286] [2024-06-28 03:02:54,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474557286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:54,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:54,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:54,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028778746] [2024-06-28 03:02:54,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:54,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:54,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:54,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:54,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:54,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:54,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 809 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:54,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:54,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:54,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:55,025 INFO L124 PetriNetUnfolderBase]: 2768/4240 cut-off events. [2024-06-28 03:02:55,025 INFO L125 PetriNetUnfolderBase]: For 53583/53599 co-relation queries the response was YES. [2024-06-28 03:02:55,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21168 conditions, 4240 events. 2768/4240 cut-off events. For 53583/53599 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22047 event pairs, 733 based on Foata normal form. 14/4237 useless extension candidates. Maximal degree in co-relation 21130. Up to 3555 conditions per place. [2024-06-28 03:02:55,050 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 128 selfloop transitions, 91 changer transitions 0/226 dead transitions. [2024-06-28 03:02:55,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 226 transitions, 2321 flow [2024-06-28 03:02:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 03:02:55,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 03:02:55,053 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 809 flow. Second operand 9 states and 189 transitions. [2024-06-28 03:02:55,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 226 transitions, 2321 flow [2024-06-28 03:02:55,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 226 transitions, 2185 flow, removed 67 selfloop flow, removed 1 redundant places. [2024-06-28 03:02:55,098 INFO L231 Difference]: Finished difference. Result has 101 places, 177 transitions, 1761 flow [2024-06-28 03:02:55,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1761, PETRI_PLACES=101, PETRI_TRANSITIONS=177} [2024-06-28 03:02:55,098 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 57 predicate places. [2024-06-28 03:02:55,099 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 177 transitions, 1761 flow [2024-06-28 03:02:55,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:55,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:55,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:55,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:02:55,100 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:55,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash -465591915, now seen corresponding path program 3 times [2024-06-28 03:02:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283497250] [2024-06-28 03:02:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:55,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:56,051 INFO 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 03:02:56,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:56,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283497250] [2024-06-28 03:02:56,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283497250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:56,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:56,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:56,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792898082] [2024-06-28 03:02:56,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:56,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:56,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:56,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:56,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 177 transitions, 1761 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:56,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:56,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:56,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:57,041 INFO L124 PetriNetUnfolderBase]: 2972/4539 cut-off events. [2024-06-28 03:02:57,041 INFO L125 PetriNetUnfolderBase]: For 66066/66085 co-relation queries the response was YES. [2024-06-28 03:02:57,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25402 conditions, 4539 events. 2972/4539 cut-off events. For 66066/66085 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 24026 event pairs, 861 based on Foata normal form. 14/4528 useless extension candidates. Maximal degree in co-relation 25357. Up to 3652 conditions per place. [2024-06-28 03:02:57,072 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 136 selfloop transitions, 163 changer transitions 0/306 dead transitions. [2024-06-28 03:02:57,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 306 transitions, 3716 flow [2024-06-28 03:02:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-28 03:02:57,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909560723514212 [2024-06-28 03:02:57,073 INFO L175 Difference]: Start difference. First operand has 101 places, 177 transitions, 1761 flow. Second operand 9 states and 190 transitions. [2024-06-28 03:02:57,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 306 transitions, 3716 flow [2024-06-28 03:02:57,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 306 transitions, 3593 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-28 03:02:57,133 INFO L231 Difference]: Finished difference. Result has 112 places, 255 transitions, 3181 flow [2024-06-28 03:02:57,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3181, PETRI_PLACES=112, PETRI_TRANSITIONS=255} [2024-06-28 03:02:57,134 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2024-06-28 03:02:57,134 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 255 transitions, 3181 flow [2024-06-28 03:02:57,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:57,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:57,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:57,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:02:57,134 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:57,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:57,135 INFO L85 PathProgramCache]: Analyzing trace with hash -930819239, now seen corresponding path program 4 times [2024-06-28 03:02:57,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:57,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309243145] [2024-06-28 03:02:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:57,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:57,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:57,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309243145] [2024-06-28 03:02:57,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309243145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:57,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:57,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911419674] [2024-06-28 03:02:57,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:57,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:58,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:58,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 255 transitions, 3181 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:58,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:58,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:58,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:58,893 INFO L124 PetriNetUnfolderBase]: 3190/4868 cut-off events. [2024-06-28 03:02:58,893 INFO L125 PetriNetUnfolderBase]: For 83713/83754 co-relation queries the response was YES. [2024-06-28 03:02:58,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29743 conditions, 4868 events. 3190/4868 cut-off events. For 83713/83754 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26208 event pairs, 970 based on Foata normal form. 18/4847 useless extension candidates. Maximal degree in co-relation 29692. Up to 4094 conditions per place. [2024-06-28 03:02:58,928 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 186 selfloop transitions, 159 changer transitions 0/352 dead transitions. [2024-06-28 03:02:58,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 352 transitions, 4877 flow [2024-06-28 03:02:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:02:58,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 03:02:58,930 INFO L175 Difference]: Start difference. First operand has 112 places, 255 transitions, 3181 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:02:58,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 352 transitions, 4877 flow [2024-06-28 03:02:59,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 352 transitions, 4756 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-06-28 03:02:59,019 INFO L231 Difference]: Finished difference. Result has 122 places, 315 transitions, 4414 flow [2024-06-28 03:02:59,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4414, PETRI_PLACES=122, PETRI_TRANSITIONS=315} [2024-06-28 03:02:59,020 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 78 predicate places. [2024-06-28 03:02:59,020 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 315 transitions, 4414 flow [2024-06-28 03:02:59,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:59,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:59,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:59,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:02:59,021 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:59,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2003167433, now seen corresponding path program 5 times [2024-06-28 03:02:59,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:59,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117537883] [2024-06-28 03:02:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:59,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:59,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:59,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117537883] [2024-06-28 03:02:59,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117537883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:59,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:59,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:59,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497933511] [2024-06-28 03:02:59,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:59,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:59,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:59,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:59,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:00,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:00,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 315 transitions, 4414 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:00,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:00,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:00,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:01,131 INFO L124 PetriNetUnfolderBase]: 3236/4945 cut-off events. [2024-06-28 03:03:01,131 INFO L125 PetriNetUnfolderBase]: For 96871/96899 co-relation queries the response was YES. [2024-06-28 03:03:01,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32655 conditions, 4945 events. 3236/4945 cut-off events. For 96871/96899 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 26642 event pairs, 983 based on Foata normal form. 12/4919 useless extension candidates. Maximal degree in co-relation 32599. Up to 4026 conditions per place. [2024-06-28 03:03:01,167 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 176 selfloop transitions, 194 changer transitions 0/377 dead transitions. [2024-06-28 03:03:01,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 377 transitions, 5831 flow [2024-06-28 03:03:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:03:01,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 03:03:01,169 INFO L175 Difference]: Start difference. First operand has 122 places, 315 transitions, 4414 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:03:01,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 377 transitions, 5831 flow [2024-06-28 03:03:01,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 377 transitions, 5753 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:01,290 INFO L231 Difference]: Finished difference. Result has 130 places, 336 transitions, 5261 flow [2024-06-28 03:03:01,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5261, PETRI_PLACES=130, PETRI_TRANSITIONS=336} [2024-06-28 03:03:01,290 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 86 predicate places. [2024-06-28 03:03:01,291 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 336 transitions, 5261 flow [2024-06-28 03:03:01,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:01,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:01,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:01,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:03:01,291 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:01,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash -465442185, now seen corresponding path program 6 times [2024-06-28 03:03:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:01,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787588836] [2024-06-28 03:03:01,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787588836] [2024-06-28 03:03:02,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787588836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:02,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:02,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:02,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78547002] [2024-06-28 03:03:02,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:02,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:02,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:02,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:02,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:02,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 336 transitions, 5261 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:02,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:02,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:02,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:03,495 INFO L124 PetriNetUnfolderBase]: 3231/4940 cut-off events. [2024-06-28 03:03:03,495 INFO L125 PetriNetUnfolderBase]: For 100690/100712 co-relation queries the response was YES. [2024-06-28 03:03:03,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34086 conditions, 4940 events. 3231/4940 cut-off events. For 100690/100712 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26519 event pairs, 813 based on Foata normal form. 22/4941 useless extension candidates. Maximal degree in co-relation 34026. Up to 3863 conditions per place. [2024-06-28 03:03:03,529 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 163 selfloop transitions, 236 changer transitions 0/406 dead transitions. [2024-06-28 03:03:03,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 406 transitions, 6921 flow [2024-06-28 03:03:03,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 03:03:03,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 03:03:03,531 INFO L175 Difference]: Start difference. First operand has 130 places, 336 transitions, 5261 flow. Second operand 9 states and 189 transitions. [2024-06-28 03:03:03,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 406 transitions, 6921 flow [2024-06-28 03:03:03,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 406 transitions, 6519 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:03,625 INFO L231 Difference]: Finished difference. Result has 135 places, 356 transitions, 5824 flow [2024-06-28 03:03:03,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4884, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5824, PETRI_PLACES=135, PETRI_TRANSITIONS=356} [2024-06-28 03:03:03,626 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2024-06-28 03:03:03,626 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 356 transitions, 5824 flow [2024-06-28 03:03:03,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:03,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:03,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:03,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:03:03,627 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:03,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:03,627 INFO L85 PathProgramCache]: Analyzing trace with hash 856586295, now seen corresponding path program 7 times [2024-06-28 03:03:03,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:03,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400426165] [2024-06-28 03:03:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:03,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:04,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:04,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400426165] [2024-06-28 03:03:04,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400426165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:04,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:04,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:04,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981247937] [2024-06-28 03:03:04,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:04,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:04,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:04,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 356 transitions, 5824 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:04,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:04,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:04,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:05,665 INFO L124 PetriNetUnfolderBase]: 3251/4982 cut-off events. [2024-06-28 03:03:05,666 INFO L125 PetriNetUnfolderBase]: For 108291/108330 co-relation queries the response was YES. [2024-06-28 03:03:05,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34788 conditions, 4982 events. 3251/4982 cut-off events. For 108291/108330 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26788 event pairs, 782 based on Foata normal form. 44/5008 useless extension candidates. Maximal degree in co-relation 34726. Up to 3872 conditions per place. [2024-06-28 03:03:05,704 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 165 selfloop transitions, 248 changer transitions 0/420 dead transitions. [2024-06-28 03:03:05,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 420 transitions, 7347 flow [2024-06-28 03:03:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:03:05,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 03:03:05,706 INFO L175 Difference]: Start difference. First operand has 135 places, 356 transitions, 5824 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:03:05,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 420 transitions, 7347 flow [2024-06-28 03:03:05,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 420 transitions, 6862 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:05,846 INFO L231 Difference]: Finished difference. Result has 142 places, 372 transitions, 6388 flow [2024-06-28 03:03:05,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5355, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6388, PETRI_PLACES=142, PETRI_TRANSITIONS=372} [2024-06-28 03:03:05,847 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 98 predicate places. [2024-06-28 03:03:05,847 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 372 transitions, 6388 flow [2024-06-28 03:03:05,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:05,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:05,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:05,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:03:05,847 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:05,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash -368751675, now seen corresponding path program 8 times [2024-06-28 03:03:05,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:05,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804531141] [2024-06-28 03:03:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:05,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:07,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:07,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804531141] [2024-06-28 03:03:07,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804531141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:07,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:07,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425083695] [2024-06-28 03:03:07,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:07,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:07,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:07,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:07,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 372 transitions, 6388 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:07,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:07,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:07,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:08,020 INFO L124 PetriNetUnfolderBase]: 3370/5132 cut-off events. [2024-06-28 03:03:08,020 INFO L125 PetriNetUnfolderBase]: For 127840/127878 co-relation queries the response was YES. [2024-06-28 03:03:08,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37454 conditions, 5132 events. 3370/5132 cut-off events. For 127840/127878 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 27811 event pairs, 1168 based on Foata normal form. 10/5093 useless extension candidates. Maximal degree in co-relation 37388. Up to 4318 conditions per place. [2024-06-28 03:03:08,066 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 261 selfloop transitions, 166 changer transitions 0/434 dead transitions. [2024-06-28 03:03:08,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 434 transitions, 7986 flow [2024-06-28 03:03:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:08,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:03:08,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:03:08,067 INFO L175 Difference]: Start difference. First operand has 142 places, 372 transitions, 6388 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:03:08,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 434 transitions, 7986 flow [2024-06-28 03:03:08,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 434 transitions, 7583 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:08,228 INFO L231 Difference]: Finished difference. Result has 148 places, 387 transitions, 6770 flow [2024-06-28 03:03:08,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6006, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6770, PETRI_PLACES=148, PETRI_TRANSITIONS=387} [2024-06-28 03:03:08,229 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 104 predicate places. [2024-06-28 03:03:08,229 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 387 transitions, 6770 flow [2024-06-28 03:03:08,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:08,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:08,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:08,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:03:08,230 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:08,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:08,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1373675061, now seen corresponding path program 9 times [2024-06-28 03:03:08,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:08,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522688577] [2024-06-28 03:03:08,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:08,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:09,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:09,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522688577] [2024-06-28 03:03:09,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522688577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:09,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:09,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:09,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010187726] [2024-06-28 03:03:09,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:09,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:09,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:09,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:09,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:09,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 387 transitions, 6770 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:09,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:09,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:09,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:10,514 INFO L124 PetriNetUnfolderBase]: 3346/5131 cut-off events. [2024-06-28 03:03:10,515 INFO L125 PetriNetUnfolderBase]: For 129038/129075 co-relation queries the response was YES. [2024-06-28 03:03:10,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37727 conditions, 5131 events. 3346/5131 cut-off events. For 129038/129075 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 27764 event pairs, 788 based on Foata normal form. 42/5155 useless extension candidates. Maximal degree in co-relation 37659. Up to 3876 conditions per place. [2024-06-28 03:03:10,554 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 150 selfloop transitions, 301 changer transitions 0/458 dead transitions. [2024-06-28 03:03:10,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 458 transitions, 8615 flow [2024-06-28 03:03:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 03:03:10,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738372093023256 [2024-06-28 03:03:10,556 INFO L175 Difference]: Start difference. First operand has 148 places, 387 transitions, 6770 flow. Second operand 8 states and 163 transitions. [2024-06-28 03:03:10,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 458 transitions, 8615 flow [2024-06-28 03:03:10,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 458 transitions, 8324 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:10,741 INFO L231 Difference]: Finished difference. Result has 151 places, 405 transitions, 7589 flow [2024-06-28 03:03:10,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7589, PETRI_PLACES=151, PETRI_TRANSITIONS=405} [2024-06-28 03:03:10,742 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 107 predicate places. [2024-06-28 03:03:10,742 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 405 transitions, 7589 flow [2024-06-28 03:03:10,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:10,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:10,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:10,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:03:10,743 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:10,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 779325755, now seen corresponding path program 1 times [2024-06-28 03:03:10,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004424297] [2024-06-28 03:03:10,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:11,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:11,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004424297] [2024-06-28 03:03:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004424297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:11,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:11,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077656801] [2024-06-28 03:03:11,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:11,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:11,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:11,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:12,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:12,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 405 transitions, 7589 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:12,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:12,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:12,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:13,220 INFO L124 PetriNetUnfolderBase]: 3700/5590 cut-off events. [2024-06-28 03:03:13,220 INFO L125 PetriNetUnfolderBase]: For 166199/166395 co-relation queries the response was YES. [2024-06-28 03:03:13,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42981 conditions, 5590 events. 3700/5590 cut-off events. For 166199/166395 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 29798 event pairs, 1440 based on Foata normal form. 112/5590 useless extension candidates. Maximal degree in co-relation 42912. Up to 5167 conditions per place. [2024-06-28 03:03:13,273 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 365 selfloop transitions, 27 changer transitions 0/439 dead transitions. [2024-06-28 03:03:13,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 439 transitions, 8702 flow [2024-06-28 03:03:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:03:13,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:03:13,274 INFO L175 Difference]: Start difference. First operand has 151 places, 405 transitions, 7589 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:03:13,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 439 transitions, 8702 flow [2024-06-28 03:03:13,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 439 transitions, 8069 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:13,526 INFO L231 Difference]: Finished difference. Result has 152 places, 418 transitions, 7287 flow [2024-06-28 03:03:13,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6962, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7287, PETRI_PLACES=152, PETRI_TRANSITIONS=418} [2024-06-28 03:03:13,527 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 108 predicate places. [2024-06-28 03:03:13,527 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 418 transitions, 7287 flow [2024-06-28 03:03:13,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:13,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:13,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:13,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:03:13,527 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:13,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:13,528 INFO L85 PathProgramCache]: Analyzing trace with hash -942285497, now seen corresponding path program 10 times [2024-06-28 03:03:13,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:13,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909348592] [2024-06-28 03:03:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:13,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909348592] [2024-06-28 03:03:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909348592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:14,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737469359] [2024-06-28 03:03:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:14,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:14,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:14,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 418 transitions, 7287 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:14,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:14,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:14,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:15,630 INFO L124 PetriNetUnfolderBase]: 3414/5207 cut-off events. [2024-06-28 03:03:15,630 INFO L125 PetriNetUnfolderBase]: For 144805/144831 co-relation queries the response was YES. [2024-06-28 03:03:15,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38289 conditions, 5207 events. 3414/5207 cut-off events. For 144805/144831 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 28393 event pairs, 1206 based on Foata normal form. 17/5182 useless extension candidates. Maximal degree in co-relation 38220. Up to 4725 conditions per place. [2024-06-28 03:03:15,769 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 381 selfloop transitions, 64 changer transitions 0/452 dead transitions. [2024-06-28 03:03:15,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 452 transitions, 8392 flow [2024-06-28 03:03:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:03:15,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-28 03:03:15,771 INFO L175 Difference]: Start difference. First operand has 152 places, 418 transitions, 7287 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:03:15,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 452 transitions, 8392 flow [2024-06-28 03:03:15,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 452 transitions, 8227 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:15,963 INFO L231 Difference]: Finished difference. Result has 155 places, 418 transitions, 7278 flow [2024-06-28 03:03:15,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7122, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7278, PETRI_PLACES=155, PETRI_TRANSITIONS=418} [2024-06-28 03:03:15,964 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 111 predicate places. [2024-06-28 03:03:15,964 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 418 transitions, 7278 flow [2024-06-28 03:03:15,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:15,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:15,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:15,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:03:15,965 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:15,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:15,966 INFO L85 PathProgramCache]: Analyzing trace with hash -412246217, now seen corresponding path program 1 times [2024-06-28 03:03:15,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:15,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040097722] [2024-06-28 03:03:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:15,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:16,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:16,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040097722] [2024-06-28 03:03:16,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040097722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:16,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:16,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:16,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874913949] [2024-06-28 03:03:16,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:16,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:16,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:16,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:16,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:16,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:16,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 418 transitions, 7278 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:16,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:16,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:16,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:17,711 INFO L124 PetriNetUnfolderBase]: 3448/5339 cut-off events. [2024-06-28 03:03:17,712 INFO L125 PetriNetUnfolderBase]: For 145997/146160 co-relation queries the response was YES. [2024-06-28 03:03:17,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37874 conditions, 5339 events. 3448/5339 cut-off events. For 145997/146160 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28962 event pairs, 1527 based on Foata normal form. 97/5415 useless extension candidates. Maximal degree in co-relation 37804. Up to 4832 conditions per place. [2024-06-28 03:03:17,760 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 303 selfloop transitions, 12 changer transitions 0/431 dead transitions. [2024-06-28 03:03:17,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 431 transitions, 7966 flow [2024-06-28 03:03:17,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:17,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 03:03:17,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42248062015503873 [2024-06-28 03:03:17,761 INFO L175 Difference]: Start difference. First operand has 155 places, 418 transitions, 7278 flow. Second operand 6 states and 109 transitions. [2024-06-28 03:03:17,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 431 transitions, 7966 flow [2024-06-28 03:03:17,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 431 transitions, 7709 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:17,951 INFO L231 Difference]: Finished difference. Result has 153 places, 421 transitions, 7085 flow [2024-06-28 03:03:17,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7021, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7085, PETRI_PLACES=153, PETRI_TRANSITIONS=421} [2024-06-28 03:03:17,952 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 109 predicate places. [2024-06-28 03:03:17,952 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 421 transitions, 7085 flow [2024-06-28 03:03:17,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:17,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:17,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:03:17,953 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:17,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1125739509, now seen corresponding path program 1 times [2024-06-28 03:03:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562442750] [2024-06-28 03:03:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:17,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:18,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:18,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562442750] [2024-06-28 03:03:18,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562442750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:18,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:18,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:18,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101031282] [2024-06-28 03:03:18,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:18,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:18,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:18,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:18,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:18,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 421 transitions, 7085 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:18,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:18,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:18,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:20,052 INFO L124 PetriNetUnfolderBase]: 3484/5318 cut-off events. [2024-06-28 03:03:20,052 INFO L125 PetriNetUnfolderBase]: For 155864/155919 co-relation queries the response was YES. [2024-06-28 03:03:20,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39663 conditions, 5318 events. 3484/5318 cut-off events. For 155864/155919 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 29216 event pairs, 1025 based on Foata normal form. 20/5299 useless extension candidates. Maximal degree in co-relation 39593. Up to 4834 conditions per place. [2024-06-28 03:03:20,099 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 400 selfloop transitions, 83 changer transitions 0/490 dead transitions. [2024-06-28 03:03:20,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 490 transitions, 8643 flow [2024-06-28 03:03:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:03:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:03:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 232 transitions. [2024-06-28 03:03:20,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:03:20,100 INFO L175 Difference]: Start difference. First operand has 153 places, 421 transitions, 7085 flow. Second operand 12 states and 232 transitions. [2024-06-28 03:03:20,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 490 transitions, 8643 flow [2024-06-28 03:03:20,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 490 transitions, 8601 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:20,283 INFO L231 Difference]: Finished difference. Result has 163 places, 436 transitions, 7436 flow [2024-06-28 03:03:20,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7043, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7436, PETRI_PLACES=163, PETRI_TRANSITIONS=436} [2024-06-28 03:03:20,284 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 119 predicate places. [2024-06-28 03:03:20,284 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 436 transitions, 7436 flow [2024-06-28 03:03:20,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:20,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:20,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:20,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:03:20,285 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:20,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:20,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1209375943, now seen corresponding path program 2 times [2024-06-28 03:03:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:20,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079843485] [2024-06-28 03:03:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:20,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:21,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:21,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079843485] [2024-06-28 03:03:21,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079843485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:21,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:21,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:21,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118034248] [2024-06-28 03:03:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:21,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:21,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:21,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:21,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:21,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 436 transitions, 7436 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:21,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:21,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:21,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:22,390 INFO L124 PetriNetUnfolderBase]: 3599/5482 cut-off events. [2024-06-28 03:03:22,390 INFO L125 PetriNetUnfolderBase]: For 174111/174144 co-relation queries the response was YES. [2024-06-28 03:03:22,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42553 conditions, 5482 events. 3599/5482 cut-off events. For 174111/174144 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 30211 event pairs, 913 based on Foata normal form. 14/5461 useless extension candidates. Maximal degree in co-relation 42480. Up to 4282 conditions per place. [2024-06-28 03:03:22,441 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 300 selfloop transitions, 197 changer transitions 0/504 dead transitions. [2024-06-28 03:03:22,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 504 transitions, 9279 flow [2024-06-28 03:03:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-28 03:03:22,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2024-06-28 03:03:22,443 INFO L175 Difference]: Start difference. First operand has 163 places, 436 transitions, 7436 flow. Second operand 10 states and 208 transitions. [2024-06-28 03:03:22,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 504 transitions, 9279 flow [2024-06-28 03:03:22,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 504 transitions, 9026 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:22,679 INFO L231 Difference]: Finished difference. Result has 169 places, 460 transitions, 8113 flow [2024-06-28 03:03:22,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7238, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8113, PETRI_PLACES=169, PETRI_TRANSITIONS=460} [2024-06-28 03:03:22,680 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 125 predicate places. [2024-06-28 03:03:22,680 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 460 transitions, 8113 flow [2024-06-28 03:03:22,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:22,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:22,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:22,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:03:22,681 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:22,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1204326043, now seen corresponding path program 3 times [2024-06-28 03:03:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:22,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045059092] [2024-06-28 03:03:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045059092] [2024-06-28 03:03:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045059092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:23,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:23,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883048234] [2024-06-28 03:03:23,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:23,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:23,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:23,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:23,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 460 transitions, 8113 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:23,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:23,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:23,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:24,824 INFO L124 PetriNetUnfolderBase]: 3605/5499 cut-off events. [2024-06-28 03:03:24,824 INFO L125 PetriNetUnfolderBase]: For 191630/191684 co-relation queries the response was YES. [2024-06-28 03:03:24,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44489 conditions, 5499 events. 3605/5499 cut-off events. For 191630/191684 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 30463 event pairs, 1052 based on Foata normal form. 22/5481 useless extension candidates. Maximal degree in co-relation 44412. Up to 5005 conditions per place. [2024-06-28 03:03:24,871 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 415 selfloop transitions, 87 changer transitions 0/509 dead transitions. [2024-06-28 03:03:24,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 509 transitions, 9431 flow [2024-06-28 03:03:24,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:03:24,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:03:24,873 INFO L175 Difference]: Start difference. First operand has 169 places, 460 transitions, 8113 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:03:24,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 509 transitions, 9431 flow [2024-06-28 03:03:25,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 509 transitions, 9179 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:25,137 INFO L231 Difference]: Finished difference. Result has 176 places, 469 transitions, 8194 flow [2024-06-28 03:03:25,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7861, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8194, PETRI_PLACES=176, PETRI_TRANSITIONS=469} [2024-06-28 03:03:25,139 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 132 predicate places. [2024-06-28 03:03:25,139 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 469 transitions, 8194 flow [2024-06-28 03:03:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:25,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:25,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:25,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:03:25,140 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:25,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2111460589, now seen corresponding path program 4 times [2024-06-28 03:03:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785664894] [2024-06-28 03:03:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:26,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:26,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785664894] [2024-06-28 03:03:26,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785664894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:26,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:26,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12643990] [2024-06-28 03:03:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:26,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:26,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 469 transitions, 8194 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:26,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:26,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:26,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:27,549 INFO L124 PetriNetUnfolderBase]: 3646/5592 cut-off events. [2024-06-28 03:03:27,549 INFO L125 PetriNetUnfolderBase]: For 192564/192613 co-relation queries the response was YES. [2024-06-28 03:03:27,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44742 conditions, 5592 events. 3646/5592 cut-off events. For 192564/192613 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 31160 event pairs, 1039 based on Foata normal form. 20/5585 useless extension candidates. Maximal degree in co-relation 44662. Up to 5050 conditions per place. [2024-06-28 03:03:27,611 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 430 selfloop transitions, 99 changer transitions 0/536 dead transitions. [2024-06-28 03:03:27,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 536 transitions, 9815 flow [2024-06-28 03:03:27,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:03:27,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:03:27,613 INFO L175 Difference]: Start difference. First operand has 176 places, 469 transitions, 8194 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:03:27,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 536 transitions, 9815 flow [2024-06-28 03:03:27,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 536 transitions, 9623 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:27,929 INFO L231 Difference]: Finished difference. Result has 181 places, 497 transitions, 8659 flow [2024-06-28 03:03:27,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8039, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8659, PETRI_PLACES=181, PETRI_TRANSITIONS=497} [2024-06-28 03:03:27,930 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 137 predicate places. [2024-06-28 03:03:27,930 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 497 transitions, 8659 flow [2024-06-28 03:03:27,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:27,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:27,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:27,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:03:27,931 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:27,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1972827349, now seen corresponding path program 5 times [2024-06-28 03:03:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:27,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370763070] [2024-06-28 03:03:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:28,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370763070] [2024-06-28 03:03:28,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370763070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:28,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:28,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523850306] [2024-06-28 03:03:28,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:28,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:28,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:28,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:28,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:28,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 497 transitions, 8659 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:28,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:28,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:28,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:30,208 INFO L124 PetriNetUnfolderBase]: 3760/5748 cut-off events. [2024-06-28 03:03:30,209 INFO L125 PetriNetUnfolderBase]: For 207524/207553 co-relation queries the response was YES. [2024-06-28 03:03:30,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47006 conditions, 5748 events. 3760/5748 cut-off events. For 207524/207553 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 31991 event pairs, 910 based on Foata normal form. 16/5742 useless extension candidates. Maximal degree in co-relation 46924. Up to 4222 conditions per place. [2024-06-28 03:03:30,265 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 277 selfloop transitions, 285 changer transitions 0/569 dead transitions. [2024-06-28 03:03:30,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 569 transitions, 10742 flow [2024-06-28 03:03:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-06-28 03:03:30,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 03:03:30,267 INFO L175 Difference]: Start difference. First operand has 181 places, 497 transitions, 8659 flow. Second operand 10 states and 210 transitions. [2024-06-28 03:03:30,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 569 transitions, 10742 flow [2024-06-28 03:03:30,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 569 transitions, 10398 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:30,576 INFO L231 Difference]: Finished difference. Result has 186 places, 520 transitions, 9366 flow [2024-06-28 03:03:30,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8325, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9366, PETRI_PLACES=186, PETRI_TRANSITIONS=520} [2024-06-28 03:03:30,577 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 142 predicate places. [2024-06-28 03:03:30,577 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 520 transitions, 9366 flow [2024-06-28 03:03:30,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:30,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:30,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:30,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:03:30,578 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:30,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:30,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1968646999, now seen corresponding path program 6 times [2024-06-28 03:03:30,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:30,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519299549] [2024-06-28 03:03:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:30,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:31,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:31,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519299549] [2024-06-28 03:03:31,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519299549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:31,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:31,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620223309] [2024-06-28 03:03:31,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:31,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:31,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:31,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:31,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:31,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 520 transitions, 9366 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:31,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:31,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:31,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:32,894 INFO L124 PetriNetUnfolderBase]: 3764/5768 cut-off events. [2024-06-28 03:03:32,894 INFO L125 PetriNetUnfolderBase]: For 223684/223710 co-relation queries the response was YES. [2024-06-28 03:03:32,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48294 conditions, 5768 events. 3764/5768 cut-off events. For 223684/223710 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 32117 event pairs, 893 based on Foata normal form. 14/5763 useless extension candidates. Maximal degree in co-relation 48212. Up to 4227 conditions per place. [2024-06-28 03:03:32,949 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 281 selfloop transitions, 285 changer transitions 0/573 dead transitions. [2024-06-28 03:03:32,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 573 transitions, 11104 flow [2024-06-28 03:03:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-28 03:03:32,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2024-06-28 03:03:32,950 INFO L175 Difference]: Start difference. First operand has 186 places, 520 transitions, 9366 flow. Second operand 10 states and 206 transitions. [2024-06-28 03:03:32,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 573 transitions, 11104 flow [2024-06-28 03:03:33,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 573 transitions, 10807 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:33,249 INFO L231 Difference]: Finished difference. Result has 192 places, 525 transitions, 9770 flow [2024-06-28 03:03:33,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9077, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9770, PETRI_PLACES=192, PETRI_TRANSITIONS=525} [2024-06-28 03:03:33,251 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 148 predicate places. [2024-06-28 03:03:33,251 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 525 transitions, 9770 flow [2024-06-28 03:03:33,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:33,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:33,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:33,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:03:33,252 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:33,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 223030393, now seen corresponding path program 7 times [2024-06-28 03:03:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:33,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627336138] [2024-06-28 03:03:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:33,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:34,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:34,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627336138] [2024-06-28 03:03:34,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627336138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:34,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968506311] [2024-06-28 03:03:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:34,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:34,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:34,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 525 transitions, 9770 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:34,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:34,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:34,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:35,735 INFO L124 PetriNetUnfolderBase]: 3881/5952 cut-off events. [2024-06-28 03:03:35,735 INFO L125 PetriNetUnfolderBase]: For 230580/230614 co-relation queries the response was YES. [2024-06-28 03:03:35,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50071 conditions, 5952 events. 3881/5952 cut-off events. For 230580/230614 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33278 event pairs, 810 based on Foata normal form. 18/5963 useless extension candidates. Maximal degree in co-relation 49988. Up to 5356 conditions per place. [2024-06-28 03:03:35,797 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 476 selfloop transitions, 114 changer transitions 0/597 dead transitions. [2024-06-28 03:03:35,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 597 transitions, 11679 flow [2024-06-28 03:03:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:35,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:35,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:03:35,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:03:35,799 INFO L175 Difference]: Start difference. First operand has 192 places, 525 transitions, 9770 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:03:35,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 597 transitions, 11679 flow [2024-06-28 03:03:36,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 597 transitions, 11067 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:36,186 INFO L231 Difference]: Finished difference. Result has 196 places, 560 transitions, 10027 flow [2024-06-28 03:03:36,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9208, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10027, PETRI_PLACES=196, PETRI_TRANSITIONS=560} [2024-06-28 03:03:36,187 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 152 predicate places. [2024-06-28 03:03:36,187 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 560 transitions, 10027 flow [2024-06-28 03:03:36,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:36,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:36,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:36,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:03:36,187 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:36,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1548446197, now seen corresponding path program 8 times [2024-06-28 03:03:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:36,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652044403] [2024-06-28 03:03:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:36,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:37,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652044403] [2024-06-28 03:03:37,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652044403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:37,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:37,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:37,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119146757] [2024-06-28 03:03:37,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:37,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:37,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:37,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:37,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 560 transitions, 10027 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:37,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:37,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:37,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:38,776 INFO L124 PetriNetUnfolderBase]: 4043/6173 cut-off events. [2024-06-28 03:03:38,776 INFO L125 PetriNetUnfolderBase]: For 249305/249318 co-relation queries the response was YES. [2024-06-28 03:03:38,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52095 conditions, 6173 events. 4043/6173 cut-off events. For 249305/249318 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34779 event pairs, 875 based on Foata normal form. 14/6174 useless extension candidates. Maximal degree in co-relation 52010. Up to 4269 conditions per place. [2024-06-28 03:03:38,843 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 255 selfloop transitions, 390 changer transitions 0/652 dead transitions. [2024-06-28 03:03:38,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 652 transitions, 12628 flow [2024-06-28 03:03:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 03:03:38,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906976744186046 [2024-06-28 03:03:38,844 INFO L175 Difference]: Start difference. First operand has 196 places, 560 transitions, 10027 flow. Second operand 10 states and 211 transitions. [2024-06-28 03:03:38,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 652 transitions, 12628 flow [2024-06-28 03:03:39,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 652 transitions, 12352 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:39,229 INFO L231 Difference]: Finished difference. Result has 203 places, 598 transitions, 11233 flow [2024-06-28 03:03:39,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9751, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11233, PETRI_PLACES=203, PETRI_TRANSITIONS=598} [2024-06-28 03:03:39,230 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 159 predicate places. [2024-06-28 03:03:39,230 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 598 transitions, 11233 flow [2024-06-28 03:03:39,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:39,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:39,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:39,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:03:39,231 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:39,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1543804567, now seen corresponding path program 9 times [2024-06-28 03:03:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:39,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148587469] [2024-06-28 03:03:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:39,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:40,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:40,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148587469] [2024-06-28 03:03:40,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148587469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:40,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:40,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:40,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045052054] [2024-06-28 03:03:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:40,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:40,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:40,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:40,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 598 transitions, 11233 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:40,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:40,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:40,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:41,835 INFO L124 PetriNetUnfolderBase]: 4093/6247 cut-off events. [2024-06-28 03:03:41,835 INFO L125 PetriNetUnfolderBase]: For 272721/272734 co-relation queries the response was YES. [2024-06-28 03:03:41,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54462 conditions, 6247 events. 4093/6247 cut-off events. For 272721/272734 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 35261 event pairs, 890 based on Foata normal form. 16/6250 useless extension candidates. Maximal degree in co-relation 54376. Up to 4314 conditions per place. [2024-06-28 03:03:41,904 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 273 selfloop transitions, 394 changer transitions 0/674 dead transitions. [2024-06-28 03:03:41,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 674 transitions, 13734 flow [2024-06-28 03:03:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 03:03:41,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906976744186046 [2024-06-28 03:03:41,906 INFO L175 Difference]: Start difference. First operand has 203 places, 598 transitions, 11233 flow. Second operand 10 states and 211 transitions. [2024-06-28 03:03:41,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 674 transitions, 13734 flow [2024-06-28 03:03:42,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 674 transitions, 13350 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:42,330 INFO L231 Difference]: Finished difference. Result has 208 places, 611 transitions, 11980 flow [2024-06-28 03:03:42,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10857, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=381, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11980, PETRI_PLACES=208, PETRI_TRANSITIONS=611} [2024-06-28 03:03:42,331 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 164 predicate places. [2024-06-28 03:03:42,331 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 611 transitions, 11980 flow [2024-06-28 03:03:42,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:42,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:42,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:42,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:03:42,332 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:42,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash 784372649, now seen corresponding path program 10 times [2024-06-28 03:03:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:42,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629718014] [2024-06-28 03:03:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:42,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:43,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:43,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629718014] [2024-06-28 03:03:43,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629718014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:43,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:43,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327073475] [2024-06-28 03:03:43,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:43,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:43,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:43,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 611 transitions, 11980 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:43,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:43,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:43,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:44,836 INFO L124 PetriNetUnfolderBase]: 4091/6256 cut-off events. [2024-06-28 03:03:44,836 INFO L125 PetriNetUnfolderBase]: For 283669/283699 co-relation queries the response was YES. [2024-06-28 03:03:44,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55096 conditions, 6256 events. 4091/6256 cut-off events. For 283669/283699 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35220 event pairs, 808 based on Foata normal form. 38/6285 useless extension candidates. Maximal degree in co-relation 55009. Up to 4314 conditions per place. [2024-06-28 03:03:44,904 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 263 selfloop transitions, 401 changer transitions 0/671 dead transitions. [2024-06-28 03:03:44,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 671 transitions, 14085 flow [2024-06-28 03:03:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:03:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:03:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-28 03:03:44,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2024-06-28 03:03:44,905 INFO L175 Difference]: Start difference. First operand has 208 places, 611 transitions, 11980 flow. Second operand 10 states and 206 transitions. [2024-06-28 03:03:44,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 671 transitions, 14085 flow [2024-06-28 03:03:45,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 671 transitions, 13210 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:45,395 INFO L231 Difference]: Finished difference. Result has 211 places, 616 transitions, 12057 flow [2024-06-28 03:03:45,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11110, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12057, PETRI_PLACES=211, PETRI_TRANSITIONS=616} [2024-06-28 03:03:45,396 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 167 predicate places. [2024-06-28 03:03:45,397 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 616 transitions, 12057 flow [2024-06-28 03:03:45,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:45,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:45,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:45,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:03:45,397 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:45,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash -517545697, now seen corresponding path program 1 times [2024-06-28 03:03:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560463107] [2024-06-28 03:03:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:46,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:46,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560463107] [2024-06-28 03:03:46,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560463107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:46,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:46,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14023628] [2024-06-28 03:03:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:46,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:46,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:46,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:46,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 616 transitions, 12057 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:46,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:46,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:46,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:48,440 INFO L124 PetriNetUnfolderBase]: 4666/7029 cut-off events. [2024-06-28 03:03:48,440 INFO L125 PetriNetUnfolderBase]: For 346642/346840 co-relation queries the response was YES. [2024-06-28 03:03:48,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62048 conditions, 7029 events. 4666/7029 cut-off events. For 346642/346840 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 39163 event pairs, 1491 based on Foata normal form. 124/7044 useless extension candidates. Maximal degree in co-relation 61960. Up to 6408 conditions per place. [2024-06-28 03:03:48,522 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 540 selfloop transitions, 78 changer transitions 0/665 dead transitions. [2024-06-28 03:03:48,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 665 transitions, 13760 flow [2024-06-28 03:03:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:03:48,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 03:03:48,524 INFO L175 Difference]: Start difference. First operand has 211 places, 616 transitions, 12057 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:03:48,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 665 transitions, 13760 flow [2024-06-28 03:03:49,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 665 transitions, 12977 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:49,226 INFO L231 Difference]: Finished difference. Result has 217 places, 633 transitions, 11790 flow [2024-06-28 03:03:49,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11280, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11790, PETRI_PLACES=217, PETRI_TRANSITIONS=633} [2024-06-28 03:03:49,228 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 173 predicate places. [2024-06-28 03:03:49,228 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 633 transitions, 11790 flow [2024-06-28 03:03:49,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:49,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:49,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:49,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:03:49,229 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:49,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:49,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1992635218, now seen corresponding path program 1 times [2024-06-28 03:03:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160640213] [2024-06-28 03:03:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:50,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:50,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160640213] [2024-06-28 03:03:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160640213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:50,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:50,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:50,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360383783] [2024-06-28 03:03:50,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:50,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:50,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:50,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:50,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 633 transitions, 11790 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:50,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:50,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:50,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:51,614 INFO L124 PetriNetUnfolderBase]: 4442/6733 cut-off events. [2024-06-28 03:03:51,614 INFO L125 PetriNetUnfolderBase]: For 339845/340193 co-relation queries the response was YES. [2024-06-28 03:03:51,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58110 conditions, 6733 events. 4442/6733 cut-off events. For 339845/340193 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 37309 event pairs, 1476 based on Foata normal form. 152/6738 useless extension candidates. Maximal degree in co-relation 58019. Up to 6149 conditions per place. [2024-06-28 03:03:51,680 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 517 selfloop transitions, 24 changer transitions 0/657 dead transitions. [2024-06-28 03:03:51,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 657 transitions, 13084 flow [2024-06-28 03:03:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:03:51,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44518272425249167 [2024-06-28 03:03:51,681 INFO L175 Difference]: Start difference. First operand has 217 places, 633 transitions, 11790 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:03:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 657 transitions, 13084 flow [2024-06-28 03:03:52,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 657 transitions, 12666 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:52,128 INFO L231 Difference]: Finished difference. Result has 219 places, 639 transitions, 11497 flow [2024-06-28 03:03:52,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11372, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11497, PETRI_PLACES=219, PETRI_TRANSITIONS=639} [2024-06-28 03:03:52,129 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 175 predicate places. [2024-06-28 03:03:52,130 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 639 transitions, 11497 flow [2024-06-28 03:03:52,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:52,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:52,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:52,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:03:52,130 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:52,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:52,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1448839643, now seen corresponding path program 11 times [2024-06-28 03:03:52,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:52,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774144282] [2024-06-28 03:03:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:52,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:53,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:53,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774144282] [2024-06-28 03:03:53,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774144282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:53,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:53,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:53,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987797595] [2024-06-28 03:03:53,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:53,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:53,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:53,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 639 transitions, 11497 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:53,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:53,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:53,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:55,087 INFO L124 PetriNetUnfolderBase]: 4269/6511 cut-off events. [2024-06-28 03:03:55,087 INFO L125 PetriNetUnfolderBase]: For 348397/348477 co-relation queries the response was YES. [2024-06-28 03:03:55,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57440 conditions, 6511 events. 4269/6511 cut-off events. For 348397/348477 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 37158 event pairs, 1095 based on Foata normal form. 12/6478 useless extension candidates. Maximal degree in co-relation 57349. Up to 5791 conditions per place. [2024-06-28 03:03:55,162 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 510 selfloop transitions, 157 changer transitions 0/677 dead transitions. [2024-06-28 03:03:55,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 677 transitions, 13091 flow [2024-06-28 03:03:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:03:55,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 03:03:55,164 INFO L175 Difference]: Start difference. First operand has 219 places, 639 transitions, 11497 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:03:55,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 677 transitions, 13091 flow [2024-06-28 03:03:55,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 677 transitions, 13012 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-28 03:03:55,708 INFO L231 Difference]: Finished difference. Result has 226 places, 642 transitions, 11882 flow [2024-06-28 03:03:55,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11418, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11882, PETRI_PLACES=226, PETRI_TRANSITIONS=642} [2024-06-28 03:03:55,708 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 182 predicate places. [2024-06-28 03:03:55,709 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 642 transitions, 11882 flow [2024-06-28 03:03:55,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:55,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:55,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:55,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:03:55,709 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:55,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1448959613, now seen corresponding path program 12 times [2024-06-28 03:03:55,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:55,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466648493] [2024-06-28 03:03:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:55,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:56,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:56,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466648493] [2024-06-28 03:03:56,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466648493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:56,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:56,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:56,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267718283] [2024-06-28 03:03:56,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:56,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:56,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:56,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:56,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:57,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:57,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 642 transitions, 11882 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:57,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:57,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:57,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:58,617 INFO L124 PetriNetUnfolderBase]: 4321/6588 cut-off events. [2024-06-28 03:03:58,617 INFO L125 PetriNetUnfolderBase]: For 369569/369663 co-relation queries the response was YES. [2024-06-28 03:03:58,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59695 conditions, 6588 events. 4321/6588 cut-off events. For 369569/369663 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 37733 event pairs, 946 based on Foata normal form. 10/6554 useless extension candidates. Maximal degree in co-relation 59602. Up to 4379 conditions per place. [2024-06-28 03:03:58,689 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 203 selfloop transitions, 489 changer transitions 0/702 dead transitions. [2024-06-28 03:03:58,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 702 transitions, 14133 flow [2024-06-28 03:03:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 03:03:58,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48320413436692505 [2024-06-28 03:03:58,690 INFO L175 Difference]: Start difference. First operand has 226 places, 642 transitions, 11882 flow. Second operand 9 states and 187 transitions. [2024-06-28 03:03:58,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 702 transitions, 14133 flow [2024-06-28 03:03:59,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 702 transitions, 13849 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:59,211 INFO L231 Difference]: Finished difference. Result has 228 places, 653 transitions, 12929 flow [2024-06-28 03:03:59,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11606, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12929, PETRI_PLACES=228, PETRI_TRANSITIONS=653} [2024-06-28 03:03:59,212 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 184 predicate places. [2024-06-28 03:03:59,212 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 653 transitions, 12929 flow [2024-06-28 03:03:59,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:59,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:59,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:59,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:03:59,213 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:59,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1453601243, now seen corresponding path program 13 times [2024-06-28 03:03:59,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:59,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202972879] [2024-06-28 03:03:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:59,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:00,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:00,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202972879] [2024-06-28 03:04:00,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202972879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:00,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:00,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251867028] [2024-06-28 03:04:00,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:00,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:00,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:00,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:00,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 653 transitions, 12929 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:00,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:00,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:00,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:01,878 INFO L124 PetriNetUnfolderBase]: 4304/6588 cut-off events. [2024-06-28 03:04:01,878 INFO L125 PetriNetUnfolderBase]: For 352540/352610 co-relation queries the response was YES. [2024-06-28 03:04:01,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60520 conditions, 6588 events. 4304/6588 cut-off events. For 352540/352610 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 37742 event pairs, 943 based on Foata normal form. 40/6606 useless extension candidates. Maximal degree in co-relation 60427. Up to 4333 conditions per place. [2024-06-28 03:04:01,953 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 236 selfloop transitions, 483 changer transitions 0/729 dead transitions. [2024-06-28 03:04:01,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 729 transitions, 15588 flow [2024-06-28 03:04:01,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 03:04:01,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780361757105943 [2024-06-28 03:04:01,954 INFO L175 Difference]: Start difference. First operand has 228 places, 653 transitions, 12929 flow. Second operand 9 states and 185 transitions. [2024-06-28 03:04:01,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 729 transitions, 15588 flow [2024-06-28 03:04:02,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 729 transitions, 15016 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:02,548 INFO L231 Difference]: Finished difference. Result has 229 places, 666 transitions, 13749 flow [2024-06-28 03:04:02,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12377, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13749, PETRI_PLACES=229, PETRI_TRANSITIONS=666} [2024-06-28 03:04:02,549 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 185 predicate places. [2024-06-28 03:04:02,549 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 666 transitions, 13749 flow [2024-06-28 03:04:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:02,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:02,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:04:02,550 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:02,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1626091133, now seen corresponding path program 14 times [2024-06-28 03:04:02,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596736703] [2024-06-28 03:04:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:02,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:03,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:03,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596736703] [2024-06-28 03:04:03,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596736703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:03,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:03,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:03,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721835832] [2024-06-28 03:04:03,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:03,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:03,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:03,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:03,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:03,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 666 transitions, 13749 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:03,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:03,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:03,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:05,263 INFO L124 PetriNetUnfolderBase]: 4363/6670 cut-off events. [2024-06-28 03:04:05,263 INFO L125 PetriNetUnfolderBase]: For 321631/321681 co-relation queries the response was YES. [2024-06-28 03:04:05,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61432 conditions, 6670 events. 4363/6670 cut-off events. For 321631/321681 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 38064 event pairs, 820 based on Foata normal form. 40/6697 useless extension candidates. Maximal degree in co-relation 61340. Up to 4379 conditions per place. [2024-06-28 03:04:05,343 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 259 selfloop transitions, 480 changer transitions 0/749 dead transitions. [2024-06-28 03:04:05,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 749 transitions, 16640 flow [2024-06-28 03:04:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:04:05,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-28 03:04:05,345 INFO L175 Difference]: Start difference. First operand has 229 places, 666 transitions, 13749 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:04:05,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 749 transitions, 16640 flow [2024-06-28 03:04:05,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 749 transitions, 15632 flow, removed 108 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:05,963 INFO L231 Difference]: Finished difference. Result has 230 places, 684 transitions, 14274 flow [2024-06-28 03:04:05,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12767, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14274, PETRI_PLACES=230, PETRI_TRANSITIONS=684} [2024-06-28 03:04:05,964 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 186 predicate places. [2024-06-28 03:04:05,964 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 684 transitions, 14274 flow [2024-06-28 03:04:05,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:05,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:05,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:05,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:04:05,965 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:05,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:05,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1626337397, now seen corresponding path program 2 times [2024-06-28 03:04:05,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:05,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347227108] [2024-06-28 03:04:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:05,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:07,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:07,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347227108] [2024-06-28 03:04:07,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347227108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:07,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:07,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051821020] [2024-06-28 03:04:07,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:07,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:07,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:07,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:07,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 684 transitions, 14274 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:07,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:07,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:07,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:09,079 INFO L124 PetriNetUnfolderBase]: 4953/7456 cut-off events. [2024-06-28 03:04:09,080 INFO L125 PetriNetUnfolderBase]: For 368661/368870 co-relation queries the response was YES. [2024-06-28 03:04:09,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68048 conditions, 7456 events. 4953/7456 cut-off events. For 368661/368870 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 41948 event pairs, 1489 based on Foata normal form. 134/7482 useless extension candidates. Maximal degree in co-relation 67957. Up to 6794 conditions per place. [2024-06-28 03:04:09,168 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 591 selfloop transitions, 82 changer transitions 0/722 dead transitions. [2024-06-28 03:04:09,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 722 transitions, 16001 flow [2024-06-28 03:04:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 03:04:09,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-28 03:04:09,170 INFO L175 Difference]: Start difference. First operand has 230 places, 684 transitions, 14274 flow. Second operand 8 states and 157 transitions. [2024-06-28 03:04:09,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 722 transitions, 16001 flow [2024-06-28 03:04:09,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 722 transitions, 14947 flow, removed 141 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:09,802 INFO L231 Difference]: Finished difference. Result has 233 places, 691 transitions, 13588 flow [2024-06-28 03:04:09,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13226, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13588, PETRI_PLACES=233, PETRI_TRANSITIONS=691} [2024-06-28 03:04:09,803 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 189 predicate places. [2024-06-28 03:04:09,803 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 691 transitions, 13588 flow [2024-06-28 03:04:09,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:09,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:09,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:09,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:04:09,803 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:09,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash 104808932, now seen corresponding path program 2 times [2024-06-28 03:04:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:09,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646099421] [2024-06-28 03:04:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:09,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:10,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:10,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646099421] [2024-06-28 03:04:10,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646099421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:10,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:10,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:04:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523596041] [2024-06-28 03:04:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:10,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:04:10,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:04:10,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:04:10,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:10,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 691 transitions, 13588 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:10,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:10,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:10,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:11,984 INFO L124 PetriNetUnfolderBase]: 4630/7028 cut-off events. [2024-06-28 03:04:11,984 INFO L125 PetriNetUnfolderBase]: For 337255/337632 co-relation queries the response was YES. [2024-06-28 03:04:12,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62247 conditions, 7028 events. 4630/7028 cut-off events. For 337255/337632 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 39448 event pairs, 1465 based on Foata normal form. 152/7010 useless extension candidates. Maximal degree in co-relation 62155. Up to 6426 conditions per place. [2024-06-28 03:04:12,070 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 566 selfloop transitions, 26 changer transitions 0/708 dead transitions. [2024-06-28 03:04:12,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 708 transitions, 14942 flow [2024-06-28 03:04:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:04:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:04:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:04:12,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:04:12,071 INFO L175 Difference]: Start difference. First operand has 233 places, 691 transitions, 13588 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:04:12,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 708 transitions, 14942 flow [2024-06-28 03:04:12,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 708 transitions, 14743 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:12,564 INFO L231 Difference]: Finished difference. Result has 234 places, 694 transitions, 13490 flow [2024-06-28 03:04:12,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13389, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13490, PETRI_PLACES=234, PETRI_TRANSITIONS=694} [2024-06-28 03:04:12,565 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 190 predicate places. [2024-06-28 03:04:12,565 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 694 transitions, 13490 flow [2024-06-28 03:04:12,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:12,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:12,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:12,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:04:12,565 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:12,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1149743599, now seen corresponding path program 3 times [2024-06-28 03:04:12,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:12,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553755433] [2024-06-28 03:04:12,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:12,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:13,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:13,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553755433] [2024-06-28 03:04:13,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553755433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:13,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:13,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:13,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584275341] [2024-06-28 03:04:13,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:13,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:13,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:13,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:13,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 694 transitions, 13490 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:13,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:13,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:13,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:15,600 INFO L124 PetriNetUnfolderBase]: 5022/7526 cut-off events. [2024-06-28 03:04:15,600 INFO L125 PetriNetUnfolderBase]: For 368773/368984 co-relation queries the response was YES. [2024-06-28 03:04:15,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66568 conditions, 7526 events. 5022/7526 cut-off events. For 368773/368984 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 42197 event pairs, 1729 based on Foata normal form. 119/7521 useless extension candidates. Maximal degree in co-relation 66475. Up to 7062 conditions per place. [2024-06-28 03:04:15,687 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 652 selfloop transitions, 18 changer transitions 0/720 dead transitions. [2024-06-28 03:04:15,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 720 transitions, 15016 flow [2024-06-28 03:04:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:15,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:04:15,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 03:04:15,690 INFO L175 Difference]: Start difference. First operand has 234 places, 694 transitions, 13490 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:04:15,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 720 transitions, 15016 flow [2024-06-28 03:04:16,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 720 transitions, 14955 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:16,291 INFO L231 Difference]: Finished difference. Result has 238 places, 696 transitions, 13532 flow [2024-06-28 03:04:16,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13429, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13532, PETRI_PLACES=238, PETRI_TRANSITIONS=696} [2024-06-28 03:04:16,292 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2024-06-28 03:04:16,292 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 696 transitions, 13532 flow [2024-06-28 03:04:16,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:16,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:16,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:16,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:04:16,293 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:16,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1992490072, now seen corresponding path program 1 times [2024-06-28 03:04:16,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:16,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744610665] [2024-06-28 03:04:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:16,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:17,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:17,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744610665] [2024-06-28 03:04:17,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744610665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:17,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:17,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737730922] [2024-06-28 03:04:17,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:17,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:17,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:17,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:17,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 696 transitions, 13532 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:17,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:17,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:17,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:18,694 INFO L124 PetriNetUnfolderBase]: 4673/7083 cut-off events. [2024-06-28 03:04:18,694 INFO L125 PetriNetUnfolderBase]: For 354419/354806 co-relation queries the response was YES. [2024-06-28 03:04:18,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62534 conditions, 7083 events. 4673/7083 cut-off events. For 354419/354806 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 39743 event pairs, 1500 based on Foata normal form. 154/7056 useless extension candidates. Maximal degree in co-relation 62441. Up to 6469 conditions per place. [2024-06-28 03:04:18,775 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 575 selfloop transitions, 33 changer transitions 0/724 dead transitions. [2024-06-28 03:04:18,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 724 transitions, 14982 flow [2024-06-28 03:04:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:04:18,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-28 03:04:18,776 INFO L175 Difference]: Start difference. First operand has 238 places, 696 transitions, 13532 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:04:18,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 724 transitions, 14982 flow [2024-06-28 03:04:19,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 724 transitions, 14897 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:19,286 INFO L231 Difference]: Finished difference. Result has 240 places, 705 transitions, 13631 flow [2024-06-28 03:04:19,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13447, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13631, PETRI_PLACES=240, PETRI_TRANSITIONS=705} [2024-06-28 03:04:19,286 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 196 predicate places. [2024-06-28 03:04:19,286 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 705 transitions, 13631 flow [2024-06-28 03:04:19,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:19,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:19,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:19,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:04:19,287 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:19,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash 854168209, now seen corresponding path program 4 times [2024-06-28 03:04:19,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:19,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052538743] [2024-06-28 03:04:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:19,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:20,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:20,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052538743] [2024-06-28 03:04:20,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052538743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:20,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:20,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:20,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001814601] [2024-06-28 03:04:20,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:20,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:20,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:20,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:20,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:20,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 705 transitions, 13631 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:20,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:20,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:20,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:22,309 INFO L124 PetriNetUnfolderBase]: 5064/7589 cut-off events. [2024-06-28 03:04:22,309 INFO L125 PetriNetUnfolderBase]: For 388496/388708 co-relation queries the response was YES. [2024-06-28 03:04:22,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68179 conditions, 7589 events. 5064/7589 cut-off events. For 388496/388708 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 42612 event pairs, 1711 based on Foata normal form. 121/7583 useless extension candidates. Maximal degree in co-relation 68084. Up to 7084 conditions per place. [2024-06-28 03:04:22,395 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 647 selfloop transitions, 44 changer transitions 0/741 dead transitions. [2024-06-28 03:04:22,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 741 transitions, 15396 flow [2024-06-28 03:04:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:04:22,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:04:22,396 INFO L175 Difference]: Start difference. First operand has 240 places, 705 transitions, 13631 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:04:22,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 741 transitions, 15396 flow [2024-06-28 03:04:22,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 741 transitions, 15351 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 03:04:22,987 INFO L231 Difference]: Finished difference. Result has 247 places, 712 transitions, 13894 flow [2024-06-28 03:04:22,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13586, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13894, PETRI_PLACES=247, PETRI_TRANSITIONS=712} [2024-06-28 03:04:22,988 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 203 predicate places. [2024-06-28 03:04:22,988 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 712 transitions, 13894 flow [2024-06-28 03:04:22,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:22,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:22,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:22,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:04:22,988 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:22,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash 853921945, now seen corresponding path program 15 times [2024-06-28 03:04:22,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:22,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092484506] [2024-06-28 03:04:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:22,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:24,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:24,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092484506] [2024-06-28 03:04:24,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092484506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:24,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:24,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:24,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965966746] [2024-06-28 03:04:24,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:24,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:24,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:24,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:24,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:24,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:24,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 712 transitions, 13894 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:24,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:24,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:24,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:25,638 INFO L124 PetriNetUnfolderBase]: 4473/6809 cut-off events. [2024-06-28 03:04:25,639 INFO L125 PetriNetUnfolderBase]: For 379487/379570 co-relation queries the response was YES. [2024-06-28 03:04:25,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62670 conditions, 6809 events. 4473/6809 cut-off events. For 379487/379570 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 39139 event pairs, 1402 based on Foata normal form. 15/6761 useless extension candidates. Maximal degree in co-relation 62571. Up to 6161 conditions per place. [2024-06-28 03:04:25,725 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 650 selfloop transitions, 92 changer transitions 0/755 dead transitions. [2024-06-28 03:04:25,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 755 transitions, 15809 flow [2024-06-28 03:04:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:04:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:04:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:04:25,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-28 03:04:25,727 INFO L175 Difference]: Start difference. First operand has 247 places, 712 transitions, 13894 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:04:25,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 755 transitions, 15809 flow [2024-06-28 03:04:26,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 755 transitions, 15386 flow, removed 171 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:26,507 INFO L231 Difference]: Finished difference. Result has 251 places, 712 transitions, 13684 flow [2024-06-28 03:04:26,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13471, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13684, PETRI_PLACES=251, PETRI_TRANSITIONS=712} [2024-06-28 03:04:26,508 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 207 predicate places. [2024-06-28 03:04:26,508 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 712 transitions, 13684 flow [2024-06-28 03:04:26,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:26,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:26,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:04:26,508 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:26,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash 862499769, now seen corresponding path program 1 times [2024-06-28 03:04:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507319371] [2024-06-28 03:04:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:27,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:27,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507319371] [2024-06-28 03:04:27,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507319371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:27,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:27,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:27,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511241210] [2024-06-28 03:04:27,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:27,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:27,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:27,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:27,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:04:27,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 712 transitions, 13684 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:27,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:27,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:04:27,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:29,495 INFO L124 PetriNetUnfolderBase]: 5344/7946 cut-off events. [2024-06-28 03:04:29,495 INFO L125 PetriNetUnfolderBase]: For 389053/389074 co-relation queries the response was YES. [2024-06-28 03:04:29,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71205 conditions, 7946 events. 5344/7946 cut-off events. For 389053/389074 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 43735 event pairs, 1880 based on Foata normal form. 2/7896 useless extension candidates. Maximal degree in co-relation 71105. Up to 7611 conditions per place. [2024-06-28 03:04:29,599 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 704 selfloop transitions, 48 changer transitions 0/760 dead transitions. [2024-06-28 03:04:29,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 760 transitions, 15893 flow [2024-06-28 03:04:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:29,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:04:29,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-28 03:04:29,601 INFO L175 Difference]: Start difference. First operand has 251 places, 712 transitions, 13684 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:04:29,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 760 transitions, 15893 flow [2024-06-28 03:04:30,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 760 transitions, 14962 flow, removed 70 selfloop flow, removed 10 redundant places. [2024-06-28 03:04:30,235 INFO L231 Difference]: Finished difference. Result has 249 places, 730 transitions, 13375 flow [2024-06-28 03:04:30,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12815, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13375, PETRI_PLACES=249, PETRI_TRANSITIONS=730} [2024-06-28 03:04:30,236 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 205 predicate places. [2024-06-28 03:04:30,237 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 730 transitions, 13375 flow [2024-06-28 03:04:30,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:30,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:30,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:30,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:04:30,237 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:30,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash 862211779, now seen corresponding path program 5 times [2024-06-28 03:04:30,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:30,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452333043] [2024-06-28 03:04:30,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:31,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:31,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452333043] [2024-06-28 03:04:31,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452333043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:31,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:31,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:31,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753384295] [2024-06-28 03:04:31,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:31,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:31,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:31,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:31,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:31,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:31,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 730 transitions, 13375 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:31,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:31,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:31,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:33,251 INFO L124 PetriNetUnfolderBase]: 5089/7635 cut-off events. [2024-06-28 03:04:33,251 INFO L125 PetriNetUnfolderBase]: For 369902/370126 co-relation queries the response was YES. [2024-06-28 03:04:33,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67730 conditions, 7635 events. 5089/7635 cut-off events. For 369902/370126 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 43082 event pairs, 1715 based on Foata normal form. 126/7629 useless extension candidates. Maximal degree in co-relation 67629. Up to 7152 conditions per place. [2024-06-28 03:04:33,344 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 674 selfloop transitions, 27 changer transitions 0/758 dead transitions. [2024-06-28 03:04:33,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 758 transitions, 15004 flow [2024-06-28 03:04:33,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:04:33,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 03:04:33,345 INFO L175 Difference]: Start difference. First operand has 249 places, 730 transitions, 13375 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:04:33,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 758 transitions, 15004 flow [2024-06-28 03:04:34,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 758 transitions, 14809 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:34,083 INFO L231 Difference]: Finished difference. Result has 250 places, 732 transitions, 13313 flow [2024-06-28 03:04:34,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13182, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13313, PETRI_PLACES=250, PETRI_TRANSITIONS=732} [2024-06-28 03:04:34,084 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 206 predicate places. [2024-06-28 03:04:34,084 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 732 transitions, 13313 flow [2024-06-28 03:04:34,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:34,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:34,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:34,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:04:34,085 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:34,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:34,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1672620321, now seen corresponding path program 6 times [2024-06-28 03:04:34,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:34,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406393696] [2024-06-28 03:04:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:34,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:35,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:35,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406393696] [2024-06-28 03:04:35,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406393696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:35,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:35,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:35,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958463153] [2024-06-28 03:04:35,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:35,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:35,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:35,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:35,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:35,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 732 transitions, 13313 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:35,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:35,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:35,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:37,319 INFO L124 PetriNetUnfolderBase]: 5081/7623 cut-off events. [2024-06-28 03:04:37,319 INFO L125 PetriNetUnfolderBase]: For 381920/382144 co-relation queries the response was YES. [2024-06-28 03:04:37,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67830 conditions, 7623 events. 5081/7623 cut-off events. For 381920/382144 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 43034 event pairs, 1713 based on Foata normal form. 126/7617 useless extension candidates. Maximal degree in co-relation 67729. Up to 7104 conditions per place. [2024-06-28 03:04:37,400 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 670 selfloop transitions, 34 changer transitions 0/761 dead transitions. [2024-06-28 03:04:37,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 761 transitions, 14966 flow [2024-06-28 03:04:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:04:37,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-28 03:04:37,401 INFO L175 Difference]: Start difference. First operand has 250 places, 732 transitions, 13313 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:04:37,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 761 transitions, 14966 flow [2024-06-28 03:04:37,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 761 transitions, 14832 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:37,920 INFO L231 Difference]: Finished difference. Result has 251 places, 734 transitions, 13331 flow [2024-06-28 03:04:37,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13179, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13331, PETRI_PLACES=251, PETRI_TRANSITIONS=734} [2024-06-28 03:04:37,921 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 207 predicate places. [2024-06-28 03:04:37,921 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 734 transitions, 13331 flow [2024-06-28 03:04:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:37,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:37,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:37,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:04:37,922 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:37,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:37,922 INFO L85 PathProgramCache]: Analyzing trace with hash 105254402, now seen corresponding path program 3 times [2024-06-28 03:04:37,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:37,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515739607] [2024-06-28 03:04:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:37,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:38,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:38,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515739607] [2024-06-28 03:04:38,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515739607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:38,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:38,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:38,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638965192] [2024-06-28 03:04:38,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:38,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:38,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:38,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:38,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:38,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:38,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 734 transitions, 13331 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:38,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:38,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:38,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:40,342 INFO L124 PetriNetUnfolderBase]: 4745/7152 cut-off events. [2024-06-28 03:04:40,342 INFO L125 PetriNetUnfolderBase]: For 370959/371429 co-relation queries the response was YES. [2024-06-28 03:04:40,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63390 conditions, 7152 events. 4745/7152 cut-off events. For 370959/371429 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 39968 event pairs, 1613 based on Foata normal form. 178/7125 useless extension candidates. Maximal degree in co-relation 63289. Up to 6618 conditions per place. [2024-06-28 03:04:40,417 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 607 selfloop transitions, 12 changer transitions 0/742 dead transitions. [2024-06-28 03:04:40,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 742 transitions, 14603 flow [2024-06-28 03:04:40,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:04:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:04:40,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 03:04:40,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41472868217054265 [2024-06-28 03:04:40,418 INFO L175 Difference]: Start difference. First operand has 251 places, 734 transitions, 13331 flow. Second operand 6 states and 107 transitions. [2024-06-28 03:04:40,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 742 transitions, 14603 flow [2024-06-28 03:04:40,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 742 transitions, 14455 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:40,906 INFO L231 Difference]: Finished difference. Result has 251 places, 734 transitions, 13213 flow [2024-06-28 03:04:40,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13183, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13213, PETRI_PLACES=251, PETRI_TRANSITIONS=734} [2024-06-28 03:04:40,907 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 207 predicate places. [2024-06-28 03:04:40,907 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 734 transitions, 13213 flow [2024-06-28 03:04:40,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:40,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:40,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:40,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:04:40,908 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:40,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:40,908 INFO L85 PathProgramCache]: Analyzing trace with hash -343741662, now seen corresponding path program 1 times [2024-06-28 03:04:40,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:40,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101712061] [2024-06-28 03:04:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:41,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:41,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101712061] [2024-06-28 03:04:41,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101712061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:41,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:41,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:04:41,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929970532] [2024-06-28 03:04:41,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:41,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:04:41,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:04:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:04:41,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:04:41,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 734 transitions, 13213 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:41,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:41,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:04:41,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:43,320 INFO L124 PetriNetUnfolderBase]: 5168/7710 cut-off events. [2024-06-28 03:04:43,320 INFO L125 PetriNetUnfolderBase]: For 364838/365036 co-relation queries the response was YES. [2024-06-28 03:04:43,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66897 conditions, 7710 events. 5168/7710 cut-off events. For 364838/365036 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 42511 event pairs, 1839 based on Foata normal form. 116/7748 useless extension candidates. Maximal degree in co-relation 66795. Up to 7364 conditions per place. [2024-06-28 03:04:43,395 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 683 selfloop transitions, 17 changer transitions 0/752 dead transitions. [2024-06-28 03:04:43,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 752 transitions, 14801 flow [2024-06-28 03:04:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:04:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:04:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 03:04:43,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-28 03:04:43,396 INFO L175 Difference]: Start difference. First operand has 251 places, 734 transitions, 13213 flow. Second operand 6 states and 108 transitions. [2024-06-28 03:04:43,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 752 transitions, 14801 flow [2024-06-28 03:04:43,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 752 transitions, 14748 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:43,854 INFO L231 Difference]: Finished difference. Result has 252 places, 740 transitions, 13260 flow [2024-06-28 03:04:43,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13162, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13260, PETRI_PLACES=252, PETRI_TRANSITIONS=740} [2024-06-28 03:04:43,854 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 208 predicate places. [2024-06-28 03:04:43,855 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 740 transitions, 13260 flow [2024-06-28 03:04:43,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:43,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:43,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:43,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:04:43,855 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:43,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:43,855 INFO L85 PathProgramCache]: Analyzing trace with hash 120455748, now seen corresponding path program 2 times [2024-06-28 03:04:43,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:43,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879329447] [2024-06-28 03:04:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:43,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:44,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:44,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879329447] [2024-06-28 03:04:44,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879329447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:44,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:44,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:04:44,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904655541] [2024-06-28 03:04:44,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:44,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:04:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:04:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:04:44,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:04:44,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 740 transitions, 13260 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:44,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:44,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:04:44,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:46,335 INFO L124 PetriNetUnfolderBase]: 5161/7704 cut-off events. [2024-06-28 03:04:46,335 INFO L125 PetriNetUnfolderBase]: For 363506/363708 co-relation queries the response was YES. [2024-06-28 03:04:46,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67314 conditions, 7704 events. 5161/7704 cut-off events. For 363506/363708 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 42523 event pairs, 1828 based on Foata normal form. 122/7748 useless extension candidates. Maximal degree in co-relation 67211. Up to 7357 conditions per place. [2024-06-28 03:04:46,426 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 679 selfloop transitions, 17 changer transitions 0/748 dead transitions. [2024-06-28 03:04:46,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 748 transitions, 14686 flow [2024-06-28 03:04:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:04:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:04:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 03:04:46,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40310077519379844 [2024-06-28 03:04:46,427 INFO L175 Difference]: Start difference. First operand has 252 places, 740 transitions, 13260 flow. Second operand 6 states and 104 transitions. [2024-06-28 03:04:46,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 748 transitions, 14686 flow [2024-06-28 03:04:46,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 748 transitions, 14639 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 03:04:46,967 INFO L231 Difference]: Finished difference. Result has 256 places, 740 transitions, 13253 flow [2024-06-28 03:04:46,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13213, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13253, PETRI_PLACES=256, PETRI_TRANSITIONS=740} [2024-06-28 03:04:46,969 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 212 predicate places. [2024-06-28 03:04:46,969 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 740 transitions, 13253 flow [2024-06-28 03:04:46,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:46,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:46,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:46,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:04:46,970 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:46,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:46,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1985796902, now seen corresponding path program 1 times [2024-06-28 03:04:46,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:46,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712090874] [2024-06-28 03:04:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:46,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:47,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712090874] [2024-06-28 03:04:47,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712090874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:47,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:47,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:47,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867407739] [2024-06-28 03:04:47,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:47,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:47,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:47,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:47,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:48,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:48,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 740 transitions, 13253 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:48,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:48,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:49,930 INFO L124 PetriNetUnfolderBase]: 4653/7080 cut-off events. [2024-06-28 03:04:49,930 INFO L125 PetriNetUnfolderBase]: For 381070/381096 co-relation queries the response was YES. [2024-06-28 03:04:49,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63526 conditions, 7080 events. 4653/7080 cut-off events. For 381070/381096 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 40921 event pairs, 1168 based on Foata normal form. 10/7034 useless extension candidates. Maximal degree in co-relation 63421. Up to 6070 conditions per place. [2024-06-28 03:04:50,022 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 640 selfloop transitions, 159 changer transitions 0/816 dead transitions. [2024-06-28 03:04:50,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 816 transitions, 15720 flow [2024-06-28 03:04:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:50,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-06-28 03:04:50,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-28 03:04:50,023 INFO L175 Difference]: Start difference. First operand has 256 places, 740 transitions, 13253 flow. Second operand 12 states and 238 transitions. [2024-06-28 03:04:50,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 816 transitions, 15720 flow [2024-06-28 03:04:50,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 816 transitions, 15674 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:50,632 INFO L231 Difference]: Finished difference. Result has 264 places, 763 transitions, 13977 flow [2024-06-28 03:04:50,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13207, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13977, PETRI_PLACES=264, PETRI_TRANSITIONS=763} [2024-06-28 03:04:50,633 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 220 predicate places. [2024-06-28 03:04:50,633 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 763 transitions, 13977 flow [2024-06-28 03:04:50,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:50,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:50,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:50,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:04:50,634 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:50,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1164050120, now seen corresponding path program 2 times [2024-06-28 03:04:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:50,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436654196] [2024-06-28 03:04:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436654196] [2024-06-28 03:04:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436654196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:51,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:51,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:51,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954660036] [2024-06-28 03:04:51,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:51,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:51,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:51,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:51,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:51,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 763 transitions, 13977 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:51,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:51,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:53,619 INFO L124 PetriNetUnfolderBase]: 4685/7121 cut-off events. [2024-06-28 03:04:53,619 INFO L125 PetriNetUnfolderBase]: For 407346/407369 co-relation queries the response was YES. [2024-06-28 03:04:53,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65869 conditions, 7121 events. 4685/7121 cut-off events. For 407346/407369 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 41185 event pairs, 989 based on Foata normal form. 8/7077 useless extension candidates. Maximal degree in co-relation 65762. Up to 5450 conditions per place. [2024-06-28 03:04:53,711 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 442 selfloop transitions, 364 changer transitions 0/823 dead transitions. [2024-06-28 03:04:53,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 823 transitions, 16410 flow [2024-06-28 03:04:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 228 transitions. [2024-06-28 03:04:53,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4820295983086681 [2024-06-28 03:04:53,712 INFO L175 Difference]: Start difference. First operand has 264 places, 763 transitions, 13977 flow. Second operand 11 states and 228 transitions. [2024-06-28 03:04:53,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 823 transitions, 16410 flow [2024-06-28 03:04:54,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 823 transitions, 16207 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:54,411 INFO L231 Difference]: Finished difference. Result has 271 places, 773 transitions, 14919 flow [2024-06-28 03:04:54,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13780, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14919, PETRI_PLACES=271, PETRI_TRANSITIONS=773} [2024-06-28 03:04:54,412 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 227 predicate places. [2024-06-28 03:04:54,412 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 773 transitions, 14919 flow [2024-06-28 03:04:54,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:54,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:54,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:54,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:04:54,413 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:54,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1258996080, now seen corresponding path program 3 times [2024-06-28 03:04:54,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:54,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226465268] [2024-06-28 03:04:54,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:54,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:55,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226465268] [2024-06-28 03:04:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226465268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:55,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:55,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993957123] [2024-06-28 03:04:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:55,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:55,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:55,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 773 transitions, 14919 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:55,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:55,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:55,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:57,865 INFO L124 PetriNetUnfolderBase]: 4823/7340 cut-off events. [2024-06-28 03:04:57,865 INFO L125 PetriNetUnfolderBase]: For 436845/436876 co-relation queries the response was YES. [2024-06-28 03:04:57,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69799 conditions, 7340 events. 4823/7340 cut-off events. For 436845/436876 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 42752 event pairs, 1238 based on Foata normal form. 14/7297 useless extension candidates. Maximal degree in co-relation 69689. Up to 6556 conditions per place. [2024-06-28 03:04:57,971 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 685 selfloop transitions, 146 changer transitions 0/848 dead transitions. [2024-06-28 03:04:57,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 848 transitions, 17352 flow [2024-06-28 03:04:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:04:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:04:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-06-28 03:04:57,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-06-28 03:04:57,972 INFO L175 Difference]: Start difference. First operand has 271 places, 773 transitions, 14919 flow. Second operand 12 states and 236 transitions. [2024-06-28 03:04:57,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 848 transitions, 17352 flow [2024-06-28 03:04:58,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 848 transitions, 17183 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:58,719 INFO L231 Difference]: Finished difference. Result has 280 places, 797 transitions, 15435 flow [2024-06-28 03:04:58,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14750, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15435, PETRI_PLACES=280, PETRI_TRANSITIONS=797} [2024-06-28 03:04:58,720 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 236 predicate places. [2024-06-28 03:04:58,720 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 797 transitions, 15435 flow [2024-06-28 03:04:58,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:58,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:58,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:58,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:04:58,720 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:58,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1810733816, now seen corresponding path program 4 times [2024-06-28 03:04:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:58,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263791028] [2024-06-28 03:04:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:58,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263791028] [2024-06-28 03:04:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263791028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380371394] [2024-06-28 03:04:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:59,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:59,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:59,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 797 transitions, 15435 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:59,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:59,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:59,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:01,871 INFO L124 PetriNetUnfolderBase]: 4807/7319 cut-off events. [2024-06-28 03:05:01,871 INFO L125 PetriNetUnfolderBase]: For 447636/447667 co-relation queries the response was YES. [2024-06-28 03:05:01,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70144 conditions, 7319 events. 4807/7319 cut-off events. For 447636/447667 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 42674 event pairs, 1245 based on Foata normal form. 14/7276 useless extension candidates. Maximal degree in co-relation 70031. Up to 6600 conditions per place. [2024-06-28 03:05:01,971 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 691 selfloop transitions, 131 changer transitions 0/839 dead transitions. [2024-06-28 03:05:01,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 839 transitions, 17321 flow [2024-06-28 03:05:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:05:01,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-28 03:05:01,972 INFO L175 Difference]: Start difference. First operand has 280 places, 797 transitions, 15435 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:05:01,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 839 transitions, 17321 flow [2024-06-28 03:05:02,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 839 transitions, 17024 flow, removed 92 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:02,685 INFO L231 Difference]: Finished difference. Result has 284 places, 797 transitions, 15421 flow [2024-06-28 03:05:02,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15138, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15421, PETRI_PLACES=284, PETRI_TRANSITIONS=797} [2024-06-28 03:05:02,685 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 240 predicate places. [2024-06-28 03:05:02,685 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 797 transitions, 15421 flow [2024-06-28 03:05:02,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:02,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:02,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:02,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:05:02,686 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:02,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1141709068, now seen corresponding path program 5 times [2024-06-28 03:05:02,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:02,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567864753] [2024-06-28 03:05:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:02,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:03,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:03,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567864753] [2024-06-28 03:05:03,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567864753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:03,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:03,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:03,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802199135] [2024-06-28 03:05:03,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:03,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:03,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:03,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:03,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:03,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:03,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 797 transitions, 15421 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:03,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:03,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:03,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:06,074 INFO L124 PetriNetUnfolderBase]: 4930/7521 cut-off events. [2024-06-28 03:05:06,074 INFO L125 PetriNetUnfolderBase]: For 452921/452944 co-relation queries the response was YES. [2024-06-28 03:05:06,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71887 conditions, 7521 events. 4930/7521 cut-off events. For 452921/452944 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 44098 event pairs, 1238 based on Foata normal form. 12/7484 useless extension candidates. Maximal degree in co-relation 71772. Up to 6678 conditions per place. [2024-06-28 03:05:06,174 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 711 selfloop transitions, 152 changer transitions 0/880 dead transitions. [2024-06-28 03:05:06,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 880 transitions, 18052 flow [2024-06-28 03:05:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:05:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:05:06,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-06-28 03:05:06,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-06-28 03:05:06,175 INFO L175 Difference]: Start difference. First operand has 284 places, 797 transitions, 15421 flow. Second operand 12 states and 236 transitions. [2024-06-28 03:05:06,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 880 transitions, 18052 flow [2024-06-28 03:05:06,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 880 transitions, 17792 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:05:06,979 INFO L231 Difference]: Finished difference. Result has 288 places, 830 transitions, 16029 flow [2024-06-28 03:05:06,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15168, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16029, PETRI_PLACES=288, PETRI_TRANSITIONS=830} [2024-06-28 03:05:06,980 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2024-06-28 03:05:06,980 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 830 transitions, 16029 flow [2024-06-28 03:05:06,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:06,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:06,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:06,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:05:06,981 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:06,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1027509718, now seen corresponding path program 6 times [2024-06-28 03:05:06,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:06,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321073925] [2024-06-28 03:05:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:06,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:08,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321073925] [2024-06-28 03:05:08,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321073925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:08,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:08,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:08,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175409685] [2024-06-28 03:05:08,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:08,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:08,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:08,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:08,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 830 transitions, 16029 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:08,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:08,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:08,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:10,559 INFO L124 PetriNetUnfolderBase]: 4985/7592 cut-off events. [2024-06-28 03:05:10,560 INFO L125 PetriNetUnfolderBase]: For 473664/473688 co-relation queries the response was YES. [2024-06-28 03:05:10,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73462 conditions, 7592 events. 4985/7592 cut-off events. For 473664/473688 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 44448 event pairs, 1011 based on Foata normal form. 14/7567 useless extension candidates. Maximal degree in co-relation 73345. Up to 5595 conditions per place. [2024-06-28 03:05:10,654 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 445 selfloop transitions, 439 changer transitions 0/901 dead transitions. [2024-06-28 03:05:10,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 901 transitions, 18838 flow [2024-06-28 03:05:10,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-28 03:05:10,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48625792811839325 [2024-06-28 03:05:10,655 INFO L175 Difference]: Start difference. First operand has 288 places, 830 transitions, 16029 flow. Second operand 11 states and 230 transitions. [2024-06-28 03:05:10,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 901 transitions, 18838 flow [2024-06-28 03:05:11,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 901 transitions, 18584 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:11,430 INFO L231 Difference]: Finished difference. Result has 293 places, 843 transitions, 17196 flow [2024-06-28 03:05:11,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15775, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=426, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17196, PETRI_PLACES=293, PETRI_TRANSITIONS=843} [2024-06-28 03:05:11,431 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 249 predicate places. [2024-06-28 03:05:11,431 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 843 transitions, 17196 flow [2024-06-28 03:05:11,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:11,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:11,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:11,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:05:11,432 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:11,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:11,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1235259926, now seen corresponding path program 7 times [2024-06-28 03:05:11,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:11,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968970722] [2024-06-28 03:05:11,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:11,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968970722] [2024-06-28 03:05:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968970722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:12,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:12,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641446405] [2024-06-28 03:05:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:12,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:12,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:12,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:12,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 843 transitions, 17196 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:12,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:12,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:12,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:15,127 INFO L124 PetriNetUnfolderBase]: 4977/7592 cut-off events. [2024-06-28 03:05:15,127 INFO L125 PetriNetUnfolderBase]: For 493307/493321 co-relation queries the response was YES. [2024-06-28 03:05:15,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76120 conditions, 7592 events. 4977/7592 cut-off events. For 493307/493321 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 44717 event pairs, 1267 based on Foata normal form. 10/7553 useless extension candidates. Maximal degree in co-relation 75999. Up to 6824 conditions per place. [2024-06-28 03:05:15,226 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 736 selfloop transitions, 131 changer transitions 0/884 dead transitions. [2024-06-28 03:05:15,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 884 transitions, 19161 flow [2024-06-28 03:05:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:05:15,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-28 03:05:15,227 INFO L175 Difference]: Start difference. First operand has 293 places, 843 transitions, 17196 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:05:15,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 884 transitions, 19161 flow [2024-06-28 03:05:16,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 884 transitions, 18528 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:16,091 INFO L231 Difference]: Finished difference. Result has 298 places, 843 transitions, 16849 flow [2024-06-28 03:05:16,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=16563, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16849, PETRI_PLACES=298, PETRI_TRANSITIONS=843} [2024-06-28 03:05:16,092 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 254 predicate places. [2024-06-28 03:05:16,092 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 843 transitions, 16849 flow [2024-06-28 03:05:16,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:16,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:16,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:16,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:05:16,093 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:16,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:16,093 INFO L85 PathProgramCache]: Analyzing trace with hash -853986323, now seen corresponding path program 1 times [2024-06-28 03:05:16,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:16,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815124692] [2024-06-28 03:05:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:16,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:17,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:17,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815124692] [2024-06-28 03:05:17,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815124692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:17,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:17,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857793412] [2024-06-28 03:05:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:17,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:17,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:17,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:05:17,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 843 transitions, 16849 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:17,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:17,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:05:17,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:19,817 INFO L124 PetriNetUnfolderBase]: 6058/9006 cut-off events. [2024-06-28 03:05:19,817 INFO L125 PetriNetUnfolderBase]: For 582296/582330 co-relation queries the response was YES. [2024-06-28 03:05:19,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87654 conditions, 9006 events. 6058/9006 cut-off events. For 582296/582330 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 50818 event pairs, 1537 based on Foata normal form. 10/8966 useless extension candidates. Maximal degree in co-relation 87532. Up to 8078 conditions per place. [2024-06-28 03:05:19,926 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 672 selfloop transitions, 227 changer transitions 0/909 dead transitions. [2024-06-28 03:05:19,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 909 transitions, 19486 flow [2024-06-28 03:05:19,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 03:05:19,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-28 03:05:19,927 INFO L175 Difference]: Start difference. First operand has 298 places, 843 transitions, 16849 flow. Second operand 10 states and 192 transitions. [2024-06-28 03:05:19,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 909 transitions, 19486 flow [2024-06-28 03:05:20,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 909 transitions, 19267 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:20,932 INFO L231 Difference]: Finished difference. Result has 302 places, 871 transitions, 17797 flow [2024-06-28 03:05:20,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=16630, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17797, PETRI_PLACES=302, PETRI_TRANSITIONS=871} [2024-06-28 03:05:20,933 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 258 predicate places. [2024-06-28 03:05:20,933 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 871 transitions, 17797 flow [2024-06-28 03:05:20,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:20,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:20,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:20,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:05:20,934 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:20,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:20,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1240766456, now seen corresponding path program 8 times [2024-06-28 03:05:20,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:20,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483564939] [2024-06-28 03:05:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:20,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483564939] [2024-06-28 03:05:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483564939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:22,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:22,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649572471] [2024-06-28 03:05:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:22,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:22,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:22,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 871 transitions, 17797 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:22,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:22,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:22,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:24,601 INFO L124 PetriNetUnfolderBase]: 5146/7855 cut-off events. [2024-06-28 03:05:24,602 INFO L125 PetriNetUnfolderBase]: For 539661/539674 co-relation queries the response was YES. [2024-06-28 03:05:24,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79435 conditions, 7855 events. 5146/7855 cut-off events. For 539661/539674 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 46176 event pairs, 1031 based on Foata normal form. 7/7823 useless extension candidates. Maximal degree in co-relation 79310. Up to 5755 conditions per place. [2024-06-28 03:05:24,714 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 476 selfloop transitions, 436 changer transitions 0/930 dead transitions. [2024-06-28 03:05:24,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 930 transitions, 20474 flow [2024-06-28 03:05:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-06-28 03:05:24,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799154334038055 [2024-06-28 03:05:24,716 INFO L175 Difference]: Start difference. First operand has 302 places, 871 transitions, 17797 flow. Second operand 11 states and 227 transitions. [2024-06-28 03:05:24,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 930 transitions, 20474 flow [2024-06-28 03:05:25,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 930 transitions, 19921 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:25,733 INFO L231 Difference]: Finished difference. Result has 307 places, 874 transitions, 18224 flow [2024-06-28 03:05:25,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=17244, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=433, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18224, PETRI_PLACES=307, PETRI_TRANSITIONS=874} [2024-06-28 03:05:25,733 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2024-06-28 03:05:25,734 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 874 transitions, 18224 flow [2024-06-28 03:05:25,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:25,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:25,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:25,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:05:25,734 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:25,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 310195362, now seen corresponding path program 1 times [2024-06-28 03:05:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:25,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913280249] [2024-06-28 03:05:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:25,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:26,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:26,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913280249] [2024-06-28 03:05:26,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913280249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:26,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:26,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:26,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482530768] [2024-06-28 03:05:26,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:26,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:26,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:26,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:26,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:26,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:05:26,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 874 transitions, 18224 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:26,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:26,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:05:26,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:28,796 INFO L124 PetriNetUnfolderBase]: 5783/8692 cut-off events. [2024-06-28 03:05:28,796 INFO L125 PetriNetUnfolderBase]: For 588682/588855 co-relation queries the response was YES. [2024-06-28 03:05:28,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87263 conditions, 8692 events. 5783/8692 cut-off events. For 588682/588855 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 49734 event pairs, 1707 based on Foata normal form. 40/8656 useless extension candidates. Maximal degree in co-relation 87138. Up to 8145 conditions per place. [2024-06-28 03:05:28,900 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 782 selfloop transitions, 48 changer transitions 0/904 dead transitions. [2024-06-28 03:05:28,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 904 transitions, 20198 flow [2024-06-28 03:05:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:05:28,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-28 03:05:28,902 INFO L175 Difference]: Start difference. First operand has 307 places, 874 transitions, 18224 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:05:28,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 904 transitions, 20198 flow [2024-06-28 03:05:30,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 904 transitions, 19423 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:30,099 INFO L231 Difference]: Finished difference. Result has 307 places, 880 transitions, 17639 flow [2024-06-28 03:05:30,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=17449, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=829, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17639, PETRI_PLACES=307, PETRI_TRANSITIONS=880} [2024-06-28 03:05:30,100 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2024-06-28 03:05:30,100 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 880 transitions, 17639 flow [2024-06-28 03:05:30,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:30,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:30,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:30,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:05:30,101 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:30,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:30,101 INFO L85 PathProgramCache]: Analyzing trace with hash -760999820, now seen corresponding path program 9 times [2024-06-28 03:05:30,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:30,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156633864] [2024-06-28 03:05:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:30,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156633864] [2024-06-28 03:05:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156633864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:31,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:31,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:31,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929101043] [2024-06-28 03:05:31,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:31,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:31,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:31,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:31,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:31,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:31,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 880 transitions, 17639 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:31,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:31,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:31,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:34,168 INFO L124 PetriNetUnfolderBase]: 5326/8141 cut-off events. [2024-06-28 03:05:34,168 INFO L125 PetriNetUnfolderBase]: For 567545/567548 co-relation queries the response was YES. [2024-06-28 03:05:34,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81119 conditions, 8141 events. 5326/8141 cut-off events. For 567545/567548 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 48210 event pairs, 928 based on Foata normal form. 8/8128 useless extension candidates. Maximal degree in co-relation 80993. Up to 7139 conditions per place. [2024-06-28 03:05:34,292 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 775 selfloop transitions, 179 changer transitions 0/974 dead transitions. [2024-06-28 03:05:34,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 974 transitions, 20644 flow [2024-06-28 03:05:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:05:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:05:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 253 transitions. [2024-06-28 03:05:34,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525939177101968 [2024-06-28 03:05:34,294 INFO L175 Difference]: Start difference. First operand has 307 places, 880 transitions, 17639 flow. Second operand 13 states and 253 transitions. [2024-06-28 03:05:34,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 974 transitions, 20644 flow [2024-06-28 03:05:35,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 974 transitions, 20575 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 03:05:35,497 INFO L231 Difference]: Finished difference. Result has 318 places, 922 transitions, 18645 flow [2024-06-28 03:05:35,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=17570, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18645, PETRI_PLACES=318, PETRI_TRANSITIONS=922} [2024-06-28 03:05:35,498 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 274 predicate places. [2024-06-28 03:05:35,498 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 922 transitions, 18645 flow [2024-06-28 03:05:35,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:35,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:35,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:35,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:05:35,499 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:35,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:35,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1672416178, now seen corresponding path program 10 times [2024-06-28 03:05:35,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:35,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686033822] [2024-06-28 03:05:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:36,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686033822] [2024-06-28 03:05:36,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686033822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:36,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:36,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:36,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735900255] [2024-06-28 03:05:36,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:36,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:36,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:37,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:37,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 922 transitions, 18645 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:37,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:37,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:37,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:39,626 INFO L124 PetriNetUnfolderBase]: 5310/8123 cut-off events. [2024-06-28 03:05:39,626 INFO L125 PetriNetUnfolderBase]: For 582033/582036 co-relation queries the response was YES. [2024-06-28 03:05:39,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81825 conditions, 8123 events. 5310/8123 cut-off events. For 582033/582036 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 48123 event pairs, 925 based on Foata normal form. 8/8110 useless extension candidates. Maximal degree in co-relation 81696. Up to 7181 conditions per place. [2024-06-28 03:05:39,732 INFO L140 encePairwiseOnDemand]: 28/43 looper letters, 778 selfloop transitions, 164 changer transitions 0/962 dead transitions. [2024-06-28 03:05:39,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 962 transitions, 20751 flow [2024-06-28 03:05:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 03:05:39,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:05:39,734 INFO L175 Difference]: Start difference. First operand has 318 places, 922 transitions, 18645 flow. Second operand 11 states and 215 transitions. [2024-06-28 03:05:39,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 962 transitions, 20751 flow [2024-06-28 03:05:40,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 962 transitions, 20443 flow, removed 96 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:40,907 INFO L231 Difference]: Finished difference. Result has 323 places, 922 transitions, 18692 flow [2024-06-28 03:05:40,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=18337, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=922, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=758, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18692, PETRI_PLACES=323, PETRI_TRANSITIONS=922} [2024-06-28 03:05:40,908 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 279 predicate places. [2024-06-28 03:05:40,908 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 922 transitions, 18692 flow [2024-06-28 03:05:40,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:40,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:40,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:40,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:05:40,909 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:40,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash -757190540, now seen corresponding path program 11 times [2024-06-28 03:05:40,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:40,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151997191] [2024-06-28 03:05:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:42,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:42,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151997191] [2024-06-28 03:05:42,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151997191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:42,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:42,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:42,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234175762] [2024-06-28 03:05:42,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:42,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:42,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:42,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:42,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 922 transitions, 18692 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:42,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:42,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:42,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:45,086 INFO L124 PetriNetUnfolderBase]: 5391/8258 cut-off events. [2024-06-28 03:05:45,086 INFO L125 PetriNetUnfolderBase]: For 603367/603370 co-relation queries the response was YES. [2024-06-28 03:05:45,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83354 conditions, 8258 events. 5391/8258 cut-off events. For 603367/603370 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 49554 event pairs, 1027 based on Foata normal form. 6/8233 useless extension candidates. Maximal degree in co-relation 83222. Up to 4758 conditions per place. [2024-06-28 03:05:45,192 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 313 selfloop transitions, 677 changer transitions 0/1010 dead transitions. [2024-06-28 03:05:45,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1010 transitions, 22301 flow [2024-06-28 03:05:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 237 transitions. [2024-06-28 03:05:45,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010570824524313 [2024-06-28 03:05:45,194 INFO L175 Difference]: Start difference. First operand has 323 places, 922 transitions, 18692 flow. Second operand 11 states and 237 transitions. [2024-06-28 03:05:45,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1010 transitions, 22301 flow [2024-06-28 03:05:46,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 1010 transitions, 22000 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:05:46,273 INFO L231 Difference]: Finished difference. Result has 328 places, 944 transitions, 20584 flow [2024-06-28 03:05:46,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=18391, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=922, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=658, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20584, PETRI_PLACES=328, PETRI_TRANSITIONS=944} [2024-06-28 03:05:46,274 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 284 predicate places. [2024-06-28 03:05:46,274 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 944 transitions, 20584 flow [2024-06-28 03:05:46,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:46,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:46,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:46,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:05:46,275 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:46,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:46,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1432808888, now seen corresponding path program 12 times [2024-06-28 03:05:46,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:46,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833212948] [2024-06-28 03:05:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:46,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:47,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833212948] [2024-06-28 03:05:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833212948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:47,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:47,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:47,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373252800] [2024-06-28 03:05:47,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:47,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:47,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:48,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:48,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 944 transitions, 20584 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:48,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:48,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:48,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:50,807 INFO L124 PetriNetUnfolderBase]: 5431/8272 cut-off events. [2024-06-28 03:05:50,807 INFO L125 PetriNetUnfolderBase]: For 637725/637728 co-relation queries the response was YES. [2024-06-28 03:05:50,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87813 conditions, 8272 events. 5431/8272 cut-off events. For 637725/637728 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 48948 event pairs, 947 based on Foata normal form. 6/8252 useless extension candidates. Maximal degree in co-relation 87677. Up to 5985 conditions per place. [2024-06-28 03:05:50,914 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 530 selfloop transitions, 467 changer transitions 0/1017 dead transitions. [2024-06-28 03:05:50,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1017 transitions, 23492 flow [2024-06-28 03:05:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-28 03:05:50,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47357293868921774 [2024-06-28 03:05:50,915 INFO L175 Difference]: Start difference. First operand has 328 places, 944 transitions, 20584 flow. Second operand 11 states and 224 transitions. [2024-06-28 03:05:50,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1017 transitions, 23492 flow [2024-06-28 03:05:52,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 1017 transitions, 23330 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 03:05:52,350 INFO L231 Difference]: Finished difference. Result has 336 places, 950 transitions, 21505 flow [2024-06-28 03:05:52,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=20422, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21505, PETRI_PLACES=336, PETRI_TRANSITIONS=950} [2024-06-28 03:05:52,351 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2024-06-28 03:05:52,351 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 950 transitions, 21505 flow [2024-06-28 03:05:52,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:52,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:52,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:52,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:05:52,351 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:52,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:52,351 INFO L85 PathProgramCache]: Analyzing trace with hash -613084529, now seen corresponding path program 2 times [2024-06-28 03:05:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:52,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926795729] [2024-06-28 03:05:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926795729] [2024-06-28 03:05:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926795729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:53,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:53,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210760894] [2024-06-28 03:05:53,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:53,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:05:53,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 950 transitions, 21505 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:53,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:53,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:05:53,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:56,446 INFO L124 PetriNetUnfolderBase]: 6604/9803 cut-off events. [2024-06-28 03:05:56,446 INFO L125 PetriNetUnfolderBase]: For 755985/756013 co-relation queries the response was YES. [2024-06-28 03:05:56,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103912 conditions, 9803 events. 6604/9803 cut-off events. For 755985/756013 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 55903 event pairs, 1596 based on Foata normal form. 10/9772 useless extension candidates. Maximal degree in co-relation 103773. Up to 8837 conditions per place. [2024-06-28 03:05:56,603 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 765 selfloop transitions, 237 changer transitions 0/1014 dead transitions. [2024-06-28 03:05:56,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1014 transitions, 24292 flow [2024-06-28 03:05:56,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 03:05:56,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44651162790697674 [2024-06-28 03:05:56,605 INFO L175 Difference]: Start difference. First operand has 336 places, 950 transitions, 21505 flow. Second operand 10 states and 192 transitions. [2024-06-28 03:05:56,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1014 transitions, 24292 flow [2024-06-28 03:05:58,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1014 transitions, 23302 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:58,523 INFO L231 Difference]: Finished difference. Result has 340 places, 972 transitions, 21560 flow [2024-06-28 03:05:58,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=20527, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21560, PETRI_PLACES=340, PETRI_TRANSITIONS=972} [2024-06-28 03:05:58,524 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 296 predicate places. [2024-06-28 03:05:58,524 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 972 transitions, 21560 flow [2024-06-28 03:05:58,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:58,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:58,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:58,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:05:58,524 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:58,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:58,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1454034865, now seen corresponding path program 3 times [2024-06-28 03:05:58,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:58,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596208149] [2024-06-28 03:05:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:58,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596208149] [2024-06-28 03:05:59,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596208149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:59,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:59,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687104815] [2024-06-28 03:05:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:59,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:00,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:00,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 972 transitions, 21560 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:00,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:00,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:00,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:02,800 INFO L124 PetriNetUnfolderBase]: 6678/9914 cut-off events. [2024-06-28 03:06:02,800 INFO L125 PetriNetUnfolderBase]: For 777169/777197 co-relation queries the response was YES. [2024-06-28 03:06:02,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105390 conditions, 9914 events. 6678/9914 cut-off events. For 777169/777197 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 56634 event pairs, 1619 based on Foata normal form. 10/9883 useless extension candidates. Maximal degree in co-relation 105248. Up to 8927 conditions per place. [2024-06-28 03:06:02,962 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 785 selfloop transitions, 242 changer transitions 0/1039 dead transitions. [2024-06-28 03:06:02,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1039 transitions, 24676 flow [2024-06-28 03:06:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:06:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:06:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:06:02,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2024-06-28 03:06:02,964 INFO L175 Difference]: Start difference. First operand has 340 places, 972 transitions, 21560 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:06:02,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1039 transitions, 24676 flow [2024-06-28 03:06:05,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1039 transitions, 24261 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:05,272 INFO L231 Difference]: Finished difference. Result has 347 places, 993 transitions, 22341 flow [2024-06-28 03:06:05,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=21163, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22341, PETRI_PLACES=347, PETRI_TRANSITIONS=993} [2024-06-28 03:06:05,273 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 303 predicate places. [2024-06-28 03:06:05,273 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 993 transitions, 22341 flow [2024-06-28 03:06:05,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:05,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:05,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:05,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:06:05,274 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:05,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1128319704, now seen corresponding path program 13 times [2024-06-28 03:06:05,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:05,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82442229] [2024-06-28 03:06:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:05,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:06,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:06,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82442229] [2024-06-28 03:06:06,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82442229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:06,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:06,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:06,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737139937] [2024-06-28 03:06:06,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:06,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:06,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:06,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:06,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:06,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:06,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 993 transitions, 22341 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:06,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:06,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:06,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:09,852 INFO L124 PetriNetUnfolderBase]: 5641/8651 cut-off events. [2024-06-28 03:06:09,852 INFO L125 PetriNetUnfolderBase]: For 720183/720193 co-relation queries the response was YES. [2024-06-28 03:06:09,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93425 conditions, 8651 events. 5641/8651 cut-off events. For 720183/720193 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 52202 event pairs, 992 based on Foata normal form. 5/8633 useless extension candidates. Maximal degree in co-relation 93281. Up to 4951 conditions per place. [2024-06-28 03:06:09,986 INFO L140 encePairwiseOnDemand]: 27/43 looper letters, 341 selfloop transitions, 698 changer transitions 0/1062 dead transitions. [2024-06-28 03:06:09,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 1062 transitions, 25744 flow [2024-06-28 03:06:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2024-06-28 03:06:09,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492600422832981 [2024-06-28 03:06:09,988 INFO L175 Difference]: Start difference. First operand has 347 places, 993 transitions, 22341 flow. Second operand 11 states and 233 transitions. [2024-06-28 03:06:09,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 1062 transitions, 25744 flow [2024-06-28 03:06:11,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1062 transitions, 25203 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:11,591 INFO L231 Difference]: Finished difference. Result has 350 places, 996 transitions, 23316 flow [2024-06-28 03:06:11,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=21800, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=695, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23316, PETRI_PLACES=350, PETRI_TRANSITIONS=996} [2024-06-28 03:06:11,592 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 306 predicate places. [2024-06-28 03:06:11,592 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 996 transitions, 23316 flow [2024-06-28 03:06:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:11,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:11,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:11,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:06:11,593 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:11,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:11,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1135944495, now seen corresponding path program 4 times [2024-06-28 03:06:11,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:11,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313853214] [2024-06-28 03:06:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:11,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:12,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:12,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313853214] [2024-06-28 03:06:12,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313853214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:12,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:12,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978697710] [2024-06-28 03:06:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:12,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:12,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:12,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:12,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 996 transitions, 23316 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:12,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:12,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:12,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:15,820 INFO L124 PetriNetUnfolderBase]: 6728/9988 cut-off events. [2024-06-28 03:06:15,820 INFO L125 PetriNetUnfolderBase]: For 844941/844969 co-relation queries the response was YES. [2024-06-28 03:06:15,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109664 conditions, 9988 events. 6728/9988 cut-off events. For 844941/844969 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 57111 event pairs, 1585 based on Foata normal form. 10/9957 useless extension candidates. Maximal degree in co-relation 109520. Up to 9002 conditions per place. [2024-06-28 03:06:15,993 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 786 selfloop transitions, 250 changer transitions 0/1048 dead transitions. [2024-06-28 03:06:15,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 1048 transitions, 26079 flow [2024-06-28 03:06:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:06:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:06:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:06:15,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441860465116279 [2024-06-28 03:06:15,994 INFO L175 Difference]: Start difference. First operand has 350 places, 996 transitions, 23316 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:06:15,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 1048 transitions, 26079 flow [2024-06-28 03:06:18,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1048 transitions, 25144 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:18,536 INFO L231 Difference]: Finished difference. Result has 355 places, 1004 transitions, 23204 flow [2024-06-28 03:06:18,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22390, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=996, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=752, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23204, PETRI_PLACES=355, PETRI_TRANSITIONS=1004} [2024-06-28 03:06:18,537 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 311 predicate places. [2024-06-28 03:06:18,537 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 1004 transitions, 23204 flow [2024-06-28 03:06:18,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:18,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:18,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:18,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:06:18,537 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:18,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:18,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1135953795, now seen corresponding path program 5 times [2024-06-28 03:06:18,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:18,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355846799] [2024-06-28 03:06:18,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:18,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:19,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:19,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355846799] [2024-06-28 03:06:19,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355846799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:19,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:19,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:19,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563323181] [2024-06-28 03:06:19,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:19,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:19,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:19,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:19,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:19,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:19,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 1004 transitions, 23204 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:19,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:19,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:19,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:22,861 INFO L124 PetriNetUnfolderBase]: 6753/10024 cut-off events. [2024-06-28 03:06:22,861 INFO L125 PetriNetUnfolderBase]: For 870080/870108 co-relation queries the response was YES. [2024-06-28 03:06:22,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108764 conditions, 10024 events. 6753/10024 cut-off events. For 870080/870108 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 57453 event pairs, 1576 based on Foata normal form. 10/9983 useless extension candidates. Maximal degree in co-relation 108618. Up to 8912 conditions per place. [2024-06-28 03:06:23,030 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 778 selfloop transitions, 258 changer transitions 0/1048 dead transitions. [2024-06-28 03:06:23,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 1048 transitions, 25702 flow [2024-06-28 03:06:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:06:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:06:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:06:23,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441860465116279 [2024-06-28 03:06:23,032 INFO L175 Difference]: Start difference. First operand has 355 places, 1004 transitions, 23204 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:06:23,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 1048 transitions, 25702 flow [2024-06-28 03:06:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1048 transitions, 25238 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:25,187 INFO L231 Difference]: Finished difference. Result has 360 places, 1006 transitions, 23345 flow [2024-06-28 03:06:25,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22740, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23345, PETRI_PLACES=360, PETRI_TRANSITIONS=1006} [2024-06-28 03:06:25,188 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 316 predicate places. [2024-06-28 03:06:25,188 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 1006 transitions, 23345 flow [2024-06-28 03:06:25,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:25,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:25,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:25,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:06:25,189 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:25,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:25,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1035843272, now seen corresponding path program 2 times [2024-06-28 03:06:25,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:25,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345335944] [2024-06-28 03:06:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:25,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:26,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:26,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:26,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345335944] [2024-06-28 03:06:26,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345335944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:26,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:26,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:26,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333175201] [2024-06-28 03:06:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:26,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:26,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:26,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:26,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:26,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1006 transitions, 23345 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:26,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:26,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:26,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:29,285 INFO L124 PetriNetUnfolderBase]: 6415/9606 cut-off events. [2024-06-28 03:06:29,285 INFO L125 PetriNetUnfolderBase]: For 841022/841190 co-relation queries the response was YES. [2024-06-28 03:06:29,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104632 conditions, 9606 events. 6415/9606 cut-off events. For 841022/841190 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 55617 event pairs, 1694 based on Foata normal form. 29/9539 useless extension candidates. Maximal degree in co-relation 104485. Up to 9054 conditions per place. [2024-06-28 03:06:29,702 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 910 selfloop transitions, 54 changer transitions 0/1038 dead transitions. [2024-06-28 03:06:29,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1038 transitions, 25714 flow [2024-06-28 03:06:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:06:29,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-28 03:06:29,703 INFO L175 Difference]: Start difference. First operand has 360 places, 1006 transitions, 23345 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:06:29,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1038 transitions, 25714 flow [2024-06-28 03:06:31,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1038 transitions, 25080 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 03:06:31,794 INFO L231 Difference]: Finished difference. Result has 359 places, 1015 transitions, 22921 flow [2024-06-28 03:06:31,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22711, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22921, PETRI_PLACES=359, PETRI_TRANSITIONS=1015} [2024-06-28 03:06:31,795 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 315 predicate places. [2024-06-28 03:06:31,795 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 1015 transitions, 22921 flow [2024-06-28 03:06:31,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:31,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:31,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:31,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:06:31,796 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:31,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1656940052, now seen corresponding path program 3 times [2024-06-28 03:06:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908308367] [2024-06-28 03:06:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:32,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:32,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908308367] [2024-06-28 03:06:32,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908308367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:32,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:32,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:32,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478761178] [2024-06-28 03:06:32,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:32,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:32,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:32,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:32,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:32,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1015 transitions, 22921 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:32,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:32,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:32,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:36,050 INFO L124 PetriNetUnfolderBase]: 6412/9602 cut-off events. [2024-06-28 03:06:36,050 INFO L125 PetriNetUnfolderBase]: For 849619/849784 co-relation queries the response was YES. [2024-06-28 03:06:36,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103970 conditions, 9602 events. 6412/9602 cut-off events. For 849619/849784 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 55601 event pairs, 1646 based on Foata normal form. 29/9537 useless extension candidates. Maximal degree in co-relation 103822. Up to 9051 conditions per place. [2024-06-28 03:06:36,322 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 904 selfloop transitions, 56 changer transitions 0/1034 dead transitions. [2024-06-28 03:06:36,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1034 transitions, 25063 flow [2024-06-28 03:06:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:06:36,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2024-06-28 03:06:36,323 INFO L175 Difference]: Start difference. First operand has 359 places, 1015 transitions, 22921 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:06:36,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1034 transitions, 25063 flow [2024-06-28 03:06:38,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 1034 transitions, 24968 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:38,395 INFO L231 Difference]: Finished difference. Result has 364 places, 1015 transitions, 22944 flow [2024-06-28 03:06:38,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22826, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=959, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22944, PETRI_PLACES=364, PETRI_TRANSITIONS=1015} [2024-06-28 03:06:38,396 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 320 predicate places. [2024-06-28 03:06:38,396 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 1015 transitions, 22944 flow [2024-06-28 03:06:38,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:38,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:38,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:38,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:06:38,397 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:38,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:38,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1964267074, now seen corresponding path program 14 times [2024-06-28 03:06:38,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:38,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752610114] [2024-06-28 03:06:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:39,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:39,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:39,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752610114] [2024-06-28 03:06:39,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752610114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:39,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:39,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:39,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238370913] [2024-06-28 03:06:39,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:39,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:39,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:39,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:39,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:40,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:40,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 1015 transitions, 22944 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:40,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:40,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:40,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:43,095 INFO L124 PetriNetUnfolderBase]: 5750/8738 cut-off events. [2024-06-28 03:06:43,095 INFO L125 PetriNetUnfolderBase]: For 860682/860719 co-relation queries the response was YES. [2024-06-28 03:06:43,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96382 conditions, 8738 events. 5750/8738 cut-off events. For 860682/860719 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 52247 event pairs, 1267 based on Foata normal form. 12/8689 useless extension candidates. Maximal degree in co-relation 96233. Up to 7360 conditions per place. [2024-06-28 03:06:43,222 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 757 selfloop transitions, 279 changer transitions 0/1062 dead transitions. [2024-06-28 03:06:43,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 1062 transitions, 25385 flow [2024-06-28 03:06:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-28 03:06:43,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45665961945031713 [2024-06-28 03:06:43,224 INFO L175 Difference]: Start difference. First operand has 364 places, 1015 transitions, 22944 flow. Second operand 11 states and 216 transitions. [2024-06-28 03:06:43,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 1062 transitions, 25385 flow [2024-06-28 03:06:45,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 1062 transitions, 25184 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:06:45,200 INFO L231 Difference]: Finished difference. Result has 368 places, 1015 transitions, 23419 flow [2024-06-28 03:06:45,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22743, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23419, PETRI_PLACES=368, PETRI_TRANSITIONS=1015} [2024-06-28 03:06:45,201 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 324 predicate places. [2024-06-28 03:06:45,201 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 1015 transitions, 23419 flow [2024-06-28 03:06:45,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:45,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:45,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:45,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:06:45,201 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:45,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash -644047898, now seen corresponding path program 1 times [2024-06-28 03:06:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:45,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513999491] [2024-06-28 03:06:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:46,305 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 03:06:46,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:46,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513999491] [2024-06-28 03:06:46,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513999491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:46,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:46,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:46,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359224356] [2024-06-28 03:06:46,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:46,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:46,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:46,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:06:46,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1015 transitions, 23419 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:46,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:46,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:06:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:49,573 INFO L124 PetriNetUnfolderBase]: 6466/9677 cut-off events. [2024-06-28 03:06:49,573 INFO L125 PetriNetUnfolderBase]: For 896396/896564 co-relation queries the response was YES. [2024-06-28 03:06:49,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106362 conditions, 9677 events. 6466/9677 cut-off events. For 896396/896564 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 56110 event pairs, 1695 based on Foata normal form. 31/9612 useless extension candidates. Maximal degree in co-relation 106212. Up to 9050 conditions per place. [2024-06-28 03:06:49,707 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 924 selfloop transitions, 67 changer transitions 0/1065 dead transitions. [2024-06-28 03:06:49,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1065 transitions, 26170 flow [2024-06-28 03:06:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:49,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:06:49,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:06:49,709 INFO L175 Difference]: Start difference. First operand has 368 places, 1015 transitions, 23419 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:06:49,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 1065 transitions, 26170 flow [2024-06-28 03:06:52,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 1065 transitions, 25554 flow, removed 42 selfloop flow, removed 13 redundant places. [2024-06-28 03:06:52,141 INFO L231 Difference]: Finished difference. Result has 366 places, 1032 transitions, 23278 flow [2024-06-28 03:06:52,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=22839, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23278, PETRI_PLACES=366, PETRI_TRANSITIONS=1032} [2024-06-28 03:06:52,142 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 322 predicate places. [2024-06-28 03:06:52,142 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 1032 transitions, 23278 flow [2024-06-28 03:06:52,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:52,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:52,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:52,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:06:52,143 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:52,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:52,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1716001858, now seen corresponding path program 15 times [2024-06-28 03:06:52,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441477873] [2024-06-28 03:06:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:53,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441477873] [2024-06-28 03:06:53,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441477873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:53,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:53,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439104422] [2024-06-28 03:06:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:53,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:54,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:54,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1032 transitions, 23278 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:54,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:54,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:54,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:56,827 INFO L124 PetriNetUnfolderBase]: 5826/8851 cut-off events. [2024-06-28 03:06:56,828 INFO L125 PetriNetUnfolderBase]: For 785883/785915 co-relation queries the response was YES. [2024-06-28 03:06:56,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96988 conditions, 8851 events. 5826/8851 cut-off events. For 785883/785915 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 53079 event pairs, 1073 based on Foata normal form. 18/8816 useless extension candidates. Maximal degree in co-relation 96839. Up to 6114 conditions per place. [2024-06-28 03:06:56,951 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 427 selfloop transitions, 635 changer transitions 0/1088 dead transitions. [2024-06-28 03:06:56,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1088 transitions, 26171 flow [2024-06-28 03:06:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:06:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:06:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 03:06:56,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720930232558139 [2024-06-28 03:06:56,953 INFO L175 Difference]: Start difference. First operand has 366 places, 1032 transitions, 23278 flow. Second operand 10 states and 203 transitions. [2024-06-28 03:06:56,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1088 transitions, 26171 flow [2024-06-28 03:06:58,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 1088 transitions, 26099 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:58,754 INFO L231 Difference]: Finished difference. Result has 373 places, 1035 transitions, 24632 flow [2024-06-28 03:06:58,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=23206, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1032, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=632, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24632, PETRI_PLACES=373, PETRI_TRANSITIONS=1035} [2024-06-28 03:06:58,755 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 329 predicate places. [2024-06-28 03:06:58,755 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 1035 transitions, 24632 flow [2024-06-28 03:06:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:58,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:58,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:58,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:06:58,756 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:58,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2111966884, now seen corresponding path program 16 times [2024-06-28 03:06:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:58,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720376596] [2024-06-28 03:06:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:00,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720376596] [2024-06-28 03:07:00,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720376596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:00,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:00,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:07:00,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944969806] [2024-06-28 03:07:00,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:00,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:07:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:07:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:07:00,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:07:00,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1035 transitions, 24632 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:00,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:00,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:07:00,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:03,413 INFO L124 PetriNetUnfolderBase]: 5835/8888 cut-off events. [2024-06-28 03:07:03,413 INFO L125 PetriNetUnfolderBase]: For 802616/802639 co-relation queries the response was YES. [2024-06-28 03:07:03,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99586 conditions, 8888 events. 5835/8888 cut-off events. For 802616/802639 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 53271 event pairs, 1041 based on Foata normal form. 16/8866 useless extension candidates. Maximal degree in co-relation 99435. Up to 6000 conditions per place. [2024-06-28 03:07:03,557 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 474 selfloop transitions, 610 changer transitions 0/1110 dead transitions. [2024-06-28 03:07:03,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1110 transitions, 28220 flow [2024-06-28 03:07:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:07:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:07:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 03:07:03,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744186046511628 [2024-06-28 03:07:03,559 INFO L175 Difference]: Start difference. First operand has 373 places, 1035 transitions, 24632 flow. Second operand 10 states and 204 transitions. [2024-06-28 03:07:03,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 1110 transitions, 28220 flow [2024-06-28 03:07:05,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 1110 transitions, 26878 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-28 03:07:05,465 INFO L231 Difference]: Finished difference. Result has 374 places, 1038 transitions, 24668 flow [2024-06-28 03:07:05,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=23294, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24668, PETRI_PLACES=374, PETRI_TRANSITIONS=1038} [2024-06-28 03:07:05,466 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 330 predicate places. [2024-06-28 03:07:05,466 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 1038 transitions, 24668 flow [2024-06-28 03:07:05,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:05,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:05,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:05,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:07:05,466 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:05,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:05,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1860107869, now seen corresponding path program 6 times [2024-06-28 03:07:05,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:05,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270904506] [2024-06-28 03:07:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:07,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270904506] [2024-06-28 03:07:07,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270904506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:07,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:07,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:07:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764340592] [2024-06-28 03:07:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:07,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:07:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:07:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:07:07,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-06-28 03:07:07,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 1038 transitions, 24668 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:07,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:07,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-06-28 03:07:07,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:10,356 INFO L124 PetriNetUnfolderBase]: 6906/10245 cut-off events. [2024-06-28 03:07:10,356 INFO L125 PetriNetUnfolderBase]: For 899673/899707 co-relation queries the response was YES. [2024-06-28 03:07:10,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113249 conditions, 10245 events. 6906/10245 cut-off events. For 899673/899707 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 58946 event pairs, 1699 based on Foata normal form. 10/10198 useless extension candidates. Maximal degree in co-relation 113098. Up to 9203 conditions per place. [2024-06-28 03:07:10,701 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 795 selfloop transitions, 276 changer transitions 0/1086 dead transitions. [2024-06-28 03:07:10,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1086 transitions, 27510 flow [2024-06-28 03:07:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:07:10,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:07:10,703 INFO L175 Difference]: Start difference. First operand has 374 places, 1038 transitions, 24668 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:07:10,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 1086 transitions, 27510 flow [2024-06-28 03:07:12,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1086 transitions, 26469 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:12,884 INFO L231 Difference]: Finished difference. Result has 377 places, 1045 transitions, 24474 flow [2024-06-28 03:07:12,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=23635, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=766, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24474, PETRI_PLACES=377, PETRI_TRANSITIONS=1045} [2024-06-28 03:07:12,884 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 333 predicate places. [2024-06-28 03:07:12,885 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1045 transitions, 24474 flow [2024-06-28 03:07:12,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:12,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:12,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:12,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:07:12,885 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:12,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1546814740, now seen corresponding path program 17 times [2024-06-28 03:07:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814534011] [2024-06-28 03:07:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat