./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_tso.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/mix052_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_tso.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:40:39,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:40:39,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:40:39,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:40:39,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:40:39,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:40:39,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:40:39,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:40:39,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:40:39,757 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:40:39,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:40:39,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:40:39,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:40:39,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:40:39,759 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:40:39,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:40:39,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:40:39,760 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:40:39,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:40:39,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:40:39,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:40:39,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:40:39,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:40:39,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:40:39,762 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:40:39,762 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:40:39,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:40:39,762 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:40:39,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:40:39,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:40:39,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:40:39,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:40:39,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:40:39,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:40:39,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:40:39,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:40:39,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:40:39,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:40:39,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:40:39,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:40:39,766 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:40:39,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:40:39,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:40:39,766 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:40:40,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:40:40,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:40:40,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:40:40,056 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:40:40,057 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:40:40,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_tso.oepc.yml/witness.yml [2024-06-28 01:40:40,174 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:40:40,174 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:40:40,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i [2024-06-28 01:40:41,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:40:41,508 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:40:41,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i [2024-06-28 01:40:41,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2601355f/cd3a44ed2dab42868e7a6e1b923909b5/FLAG8a0c69eaf [2024-06-28 01:40:41,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2601355f/cd3a44ed2dab42868e7a6e1b923909b5 [2024-06-28 01:40:41,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:40:41,547 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:40:41,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:40:41,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:40:41,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:40:41,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:40" (1/2) ... [2024-06-28 01:40:41,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10728d0c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:40:41, skipping insertion in model container [2024-06-28 01:40:41,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:40" (1/2) ... [2024-06-28 01:40:41,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2447b5c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:40:41, skipping insertion in model container [2024-06-28 01:40:41,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:40:41" (2/2) ... [2024-06-28 01:40:41,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10728d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41, skipping insertion in model container [2024-06-28 01:40:41,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:40:41" (2/2) ... [2024-06-28 01:40:41,554 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:40:41,626 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:40:41,627 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:40:41,627 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:40:41,627 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] (((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:40:41,627 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:40:41,628 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-06-28 01:40:41,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:40:41,823 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i[949,962] [2024-06-28 01:40:41,970 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:40:41,977 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:40:42,015 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:40:42,126 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:40:42,190 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:40:42,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42 WrapperNode [2024-06-28 01:40:42,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:40:42,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:40:42,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:40:42,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:40:42,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,254 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-06-28 01:40:42,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:40:42,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:40:42,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:40:42,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:40:42,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,281 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,298 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:40:42,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:40:42,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:40:42,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:40:42,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:40:42,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (1/1) ... [2024-06-28 01:40:42,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:40:42,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:40:42,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:40:42,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:40:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:40:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:40:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:40:42,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:40:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:40:42,397 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:40:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:40:42,398 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:40:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:40:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:40:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:40:42,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:40:42,400 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:40:42,499 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:40:42,501 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:40:42,775 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:40:42,775 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:40:42,936 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:40:42,936 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:40:42,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:40:42 BoogieIcfgContainer [2024-06-28 01:40:42,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:40:42,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:40:42,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:40:42,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:40:42,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:40" (1/4) ... [2024-06-28 01:40:42,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616c6345 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:40:42, skipping insertion in model container [2024-06-28 01:40:42,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:40:41" (2/4) ... [2024-06-28 01:40:42,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616c6345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:40:42, skipping insertion in model container [2024-06-28 01:40:42,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:42" (3/4) ... [2024-06-28 01:40:42,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616c6345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:40:42, skipping insertion in model container [2024-06-28 01:40:42,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:40:42" (4/4) ... [2024-06-28 01:40:42,944 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_tso.oepc.i [2024-06-28 01:40:42,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:40:42,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:40:42,959 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:40:42,998 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:40:43,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:40:43,068 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:40:43,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:40:43,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:40:43,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:40:43,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:40:43,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:40:43,098 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;@cccb0c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:40:43,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:40:43,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:40:43,103 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:40:43,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:40:43,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:43,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:40:43,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:43,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash 354753175, now seen corresponding path program 1 times [2024-06-28 01:40:43,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:43,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079849138] [2024-06-28 01:40:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:43,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079849138] [2024-06-28 01:40:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079849138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:43,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:43,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:40:44,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252693889] [2024-06-28 01:40:44,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:44,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:40:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:40:44,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:40:44,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:44,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 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 01:40:44,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:44,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:44,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:44,778 INFO L124 PetriNetUnfolderBase]: 3625/5500 cut-off events. [2024-06-28 01:40:44,778 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:40:44,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10822 conditions, 5500 events. 3625/5500 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 32005 event pairs, 2115 based on Foata normal form. 181/5363 useless extension candidates. Maximal degree in co-relation 10810. Up to 5218 conditions per place. [2024-06-28 01:40:44,811 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:40:44,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 225 flow [2024-06-28 01:40:44,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:40:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:40:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-28 01:40:44,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-28 01:40:44,823 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 94 transitions. [2024-06-28 01:40:44,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 225 flow [2024-06-28 01:40:44,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:44,831 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:40:44,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 01:40:44,836 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:40:44,836 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:40:44,836 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 01:40:44,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:44,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:44,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:40:44,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:44,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1616673920, now seen corresponding path program 1 times [2024-06-28 01:40:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:44,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551760803] [2024-06-28 01:40:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:45,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551760803] [2024-06-28 01:40:45,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551760803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:45,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:40:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796199586] [2024-06-28 01:40:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:45,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:40:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:40:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:40:45,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:45,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:45,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:45,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:45,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:46,038 INFO L124 PetriNetUnfolderBase]: 4349/6412 cut-off events. [2024-06-28 01:40:46,039 INFO L125 PetriNetUnfolderBase]: For 891/891 co-relation queries the response was YES. [2024-06-28 01:40:46,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14250 conditions, 6412 events. 4349/6412 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36508 event pairs, 2339 based on Foata normal form. 3/6066 useless extension candidates. Maximal degree in co-relation 14238. Up to 6202 conditions per place. [2024-06-28 01:40:46,065 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 55 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-28 01:40:46,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 325 flow [2024-06-28 01:40:46,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:40:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:40:46,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-28 01:40:46,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467391304347826 [2024-06-28 01:40:46,067 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 119 transitions. [2024-06-28 01:40:46,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 325 flow [2024-06-28 01:40:46,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:40:46,071 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 173 flow [2024-06-28 01:40:46,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 01:40:46,072 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-28 01:40:46,072 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 173 flow [2024-06-28 01:40:46,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:46,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:46,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:46,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:40:46,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:46,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1422714426, now seen corresponding path program 1 times [2024-06-28 01:40:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:46,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651712550] [2024-06-28 01:40:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:46,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:46,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651712550] [2024-06-28 01:40:46,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651712550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:46,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:40:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538703696] [2024-06-28 01:40:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:46,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:40:46,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:46,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:40:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:40:46,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:46,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 173 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 01:40:46,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:46,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:46,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:47,113 INFO L124 PetriNetUnfolderBase]: 4333/6916 cut-off events. [2024-06-28 01:40:47,113 INFO L125 PetriNetUnfolderBase]: For 2521/2521 co-relation queries the response was YES. [2024-06-28 01:40:47,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16182 conditions, 6916 events. 4333/6916 cut-off events. For 2521/2521 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43678 event pairs, 1996 based on Foata normal form. 6/6398 useless extension candidates. Maximal degree in co-relation 16168. Up to 6151 conditions per place. [2024-06-28 01:40:47,142 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 67 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-06-28 01:40:47,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 484 flow [2024-06-28 01:40:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:40:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:40:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-28 01:40:47,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217391304347826 [2024-06-28 01:40:47,144 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 173 flow. Second operand 5 states and 143 transitions. [2024-06-28 01:40:47,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 484 flow [2024-06-28 01:40:47,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 93 transitions, 448 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:40:47,147 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 296 flow [2024-06-28 01:40:47,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2024-06-28 01:40:47,147 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-28 01:40:47,147 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 296 flow [2024-06-28 01:40:47,148 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 01:40:47,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:47,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:40:47,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:47,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1462284391, now seen corresponding path program 1 times [2024-06-28 01:40:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:47,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552043919] [2024-06-28 01:40:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:47,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:47,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552043919] [2024-06-28 01:40:47,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552043919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:47,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:47,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:40:47,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702984962] [2024-06-28 01:40:47,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:47,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:40:47,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:40:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:40:47,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-28 01:40:47,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 01:40:47,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:47,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-28 01:40:47,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:47,438 INFO L124 PetriNetUnfolderBase]: 1235/2489 cut-off events. [2024-06-28 01:40:47,438 INFO L125 PetriNetUnfolderBase]: For 1229/1367 co-relation queries the response was YES. [2024-06-28 01:40:47,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 2489 events. 1235/2489 cut-off events. For 1229/1367 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18178 event pairs, 483 based on Foata normal form. 21/2372 useless extension candidates. Maximal degree in co-relation 5440. Up to 1589 conditions per place. [2024-06-28 01:40:47,451 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 35 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-06-28 01:40:47,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 367 flow [2024-06-28 01:40:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:40:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:40:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 01:40:47,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-06-28 01:40:47,452 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 296 flow. Second operand 3 states and 104 transitions. [2024-06-28 01:40:47,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 367 flow [2024-06-28 01:40:47,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 359 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:40:47,455 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 259 flow [2024-06-28 01:40:47,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2024-06-28 01:40:47,455 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-06-28 01:40:47,456 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 259 flow [2024-06-28 01:40:47,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 01:40:47,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:47,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:47,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:40:47,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:47,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:47,457 INFO L85 PathProgramCache]: Analyzing trace with hash -168275383, now seen corresponding path program 1 times [2024-06-28 01:40:47,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:47,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177593283] [2024-06-28 01:40:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:47,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:48,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:48,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177593283] [2024-06-28 01:40:48,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177593283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:48,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:48,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:48,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760588066] [2024-06-28 01:40:48,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:48,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:48,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:48,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:48,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:48,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 259 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:48,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:48,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:48,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:48,959 INFO L124 PetriNetUnfolderBase]: 3556/5699 cut-off events. [2024-06-28 01:40:48,960 INFO L125 PetriNetUnfolderBase]: For 5427/5427 co-relation queries the response was YES. [2024-06-28 01:40:48,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14406 conditions, 5699 events. 3556/5699 cut-off events. For 5427/5427 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 34311 event pairs, 1702 based on Foata normal form. 6/5522 useless extension candidates. Maximal degree in co-relation 14387. Up to 5018 conditions per place. [2024-06-28 01:40:48,990 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 69 selfloop transitions, 16 changer transitions 1/96 dead transitions. [2024-06-28 01:40:48,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 529 flow [2024-06-28 01:40:48,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:48,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 01:40:48,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 01:40:48,992 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 259 flow. Second operand 6 states and 161 transitions. [2024-06-28 01:40:48,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 529 flow [2024-06-28 01:40:48,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:40:49,000 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 301 flow [2024-06-28 01:40:49,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-28 01:40:49,002 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-06-28 01:40:49,005 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 301 flow [2024-06-28 01:40:49,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:49,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:49,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:49,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:40:49,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:49,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:49,007 INFO L85 PathProgramCache]: Analyzing trace with hash -802234893, now seen corresponding path program 1 times [2024-06-28 01:40:49,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:49,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490874756] [2024-06-28 01:40:49,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:49,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:49,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490874756] [2024-06-28 01:40:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490874756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:49,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:49,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:40:49,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175669294] [2024-06-28 01:40:49,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:40:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:40:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:40:49,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:40:49,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:49,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:49,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:40:49,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:50,178 INFO L124 PetriNetUnfolderBase]: 2957/4932 cut-off events. [2024-06-28 01:40:50,178 INFO L125 PetriNetUnfolderBase]: For 5708/5708 co-relation queries the response was YES. [2024-06-28 01:40:50,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12982 conditions, 4932 events. 2957/4932 cut-off events. For 5708/5708 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30416 event pairs, 1512 based on Foata normal form. 2/4781 useless extension candidates. Maximal degree in co-relation 12961. Up to 4259 conditions per place. [2024-06-28 01:40:50,202 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 67 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2024-06-28 01:40:50,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 547 flow [2024-06-28 01:40:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:40:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:40:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 01:40:50,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-28 01:40:50,203 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 301 flow. Second operand 5 states and 117 transitions. [2024-06-28 01:40:50,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 547 flow [2024-06-28 01:40:50,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 499 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:50,208 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 346 flow [2024-06-28 01:40:50,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2024-06-28 01:40:50,211 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-28 01:40:50,211 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 346 flow [2024-06-28 01:40:50,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:50,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:50,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:50,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:40:50,212 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:50,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -952994840, now seen corresponding path program 1 times [2024-06-28 01:40:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:50,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710880443] [2024-06-28 01:40:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:50,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:50,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710880443] [2024-06-28 01:40:50,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710880443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:50,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:50,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:50,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328416184] [2024-06-28 01:40:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:50,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:50,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 346 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 01:40:50,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:50,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:50,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:51,591 INFO L124 PetriNetUnfolderBase]: 3604/5794 cut-off events. [2024-06-28 01:40:51,591 INFO L125 PetriNetUnfolderBase]: For 9096/9105 co-relation queries the response was YES. [2024-06-28 01:40:51,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16393 conditions, 5794 events. 3604/5794 cut-off events. For 9096/9105 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 34816 event pairs, 1849 based on Foata normal form. 8/5616 useless extension candidates. Maximal degree in co-relation 16369. Up to 5138 conditions per place. [2024-06-28 01:40:51,618 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 78 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2024-06-28 01:40:51,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 699 flow [2024-06-28 01:40:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 01:40:51,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273291925465837 [2024-06-28 01:40:51,620 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 346 flow. Second operand 7 states and 149 transitions. [2024-06-28 01:40:51,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 699 flow [2024-06-28 01:40:51,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 681 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:40:51,625 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 506 flow [2024-06-28 01:40:51,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2024-06-28 01:40:51,625 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-06-28 01:40:51,626 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 506 flow [2024-06-28 01:40:51,626 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 01:40:51,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:51,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:51,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:40:51,626 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:51,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:51,627 INFO L85 PathProgramCache]: Analyzing trace with hash -970535726, now seen corresponding path program 2 times [2024-06-28 01:40:51,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:51,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895391863] [2024-06-28 01:40:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:51,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:52,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:52,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895391863] [2024-06-28 01:40:52,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895391863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:52,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:52,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:52,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628654347] [2024-06-28 01:40:52,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:52,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:52,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:52,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:52,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 506 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 01:40:52,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:52,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:52,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:52,932 INFO L124 PetriNetUnfolderBase]: 3666/5948 cut-off events. [2024-06-28 01:40:52,932 INFO L125 PetriNetUnfolderBase]: For 13850/13850 co-relation queries the response was YES. [2024-06-28 01:40:52,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18323 conditions, 5948 events. 3666/5948 cut-off events. For 13850/13850 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 36433 event pairs, 2249 based on Foata normal form. 2/5764 useless extension candidates. Maximal degree in co-relation 18294. Up to 5207 conditions per place. [2024-06-28 01:40:52,974 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 87 selfloop transitions, 29 changer transitions 0/124 dead transitions. [2024-06-28 01:40:52,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 124 transitions, 926 flow [2024-06-28 01:40:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:52,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:40:52,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:40:52,978 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 506 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:40:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 124 transitions, 926 flow [2024-06-28 01:40:52,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 124 transitions, 896 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-28 01:40:52,995 INFO L231 Difference]: Finished difference. Result has 80 places, 94 transitions, 678 flow [2024-06-28 01:40:52,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=678, PETRI_PLACES=80, PETRI_TRANSITIONS=94} [2024-06-28 01:40:52,997 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-06-28 01:40:52,997 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 94 transitions, 678 flow [2024-06-28 01:40:52,997 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 01:40:52,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:52,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:52,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:40:52,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:52,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:52,998 INFO L85 PathProgramCache]: Analyzing trace with hash -984931970, now seen corresponding path program 3 times [2024-06-28 01:40:52,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:52,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948017532] [2024-06-28 01:40:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:52,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:53,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948017532] [2024-06-28 01:40:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948017532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:53,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:53,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:53,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954957076] [2024-06-28 01:40:53,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:53,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:53,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:53,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:53,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:53,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 94 transitions, 678 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 01:40:53,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:53,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:53,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:54,320 INFO L124 PetriNetUnfolderBase]: 3669/5958 cut-off events. [2024-06-28 01:40:54,321 INFO L125 PetriNetUnfolderBase]: For 18252/18252 co-relation queries the response was YES. [2024-06-28 01:40:54,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19648 conditions, 5958 events. 3669/5958 cut-off events. For 18252/18252 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 36546 event pairs, 2124 based on Foata normal form. 2/5769 useless extension candidates. Maximal degree in co-relation 19615. Up to 5160 conditions per place. [2024-06-28 01:40:54,360 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 82 selfloop transitions, 33 changer transitions 0/123 dead transitions. [2024-06-28 01:40:54,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 123 transitions, 1032 flow [2024-06-28 01:40:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:54,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:40:54,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:40:54,361 INFO L175 Difference]: Start difference. First operand has 80 places, 94 transitions, 678 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:40:54,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 123 transitions, 1032 flow [2024-06-28 01:40:54,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 123 transitions, 989 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:54,375 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 747 flow [2024-06-28 01:40:54,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=747, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2024-06-28 01:40:54,376 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2024-06-28 01:40:54,376 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 747 flow [2024-06-28 01:40:54,377 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 01:40:54,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:54,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:54,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:40:54,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:54,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2146407794, now seen corresponding path program 1 times [2024-06-28 01:40:54,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:54,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166307586] [2024-06-28 01:40:54,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:54,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:55,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166307586] [2024-06-28 01:40:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166307586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:55,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:55,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289418734] [2024-06-28 01:40:55,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:55,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:55,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:55,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:55,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:55,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 747 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:55,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:55,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:55,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:56,006 INFO L124 PetriNetUnfolderBase]: 3796/6221 cut-off events. [2024-06-28 01:40:56,007 INFO L125 PetriNetUnfolderBase]: For 23231/23231 co-relation queries the response was YES. [2024-06-28 01:40:56,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21398 conditions, 6221 events. 3796/6221 cut-off events. For 23231/23231 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 38435 event pairs, 2308 based on Foata normal form. 2/6023 useless extension candidates. Maximal degree in co-relation 21364. Up to 5398 conditions per place. [2024-06-28 01:40:56,047 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 113 selfloop transitions, 17 changer transitions 0/138 dead transitions. [2024-06-28 01:40:56,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 138 transitions, 1176 flow [2024-06-28 01:40:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:40:56,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:40:56,049 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 747 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:40:56,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 138 transitions, 1176 flow [2024-06-28 01:40:56,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 138 transitions, 1087 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:56,071 INFO L231 Difference]: Finished difference. Result has 87 places, 104 transitions, 764 flow [2024-06-28 01:40:56,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=764, PETRI_PLACES=87, PETRI_TRANSITIONS=104} [2024-06-28 01:40:56,072 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-06-28 01:40:56,072 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 104 transitions, 764 flow [2024-06-28 01:40:56,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:56,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:56,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:56,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:40:56,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:56,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1850678760, now seen corresponding path program 1 times [2024-06-28 01:40:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:56,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142255629] [2024-06-28 01:40:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:56,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:56,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:56,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142255629] [2024-06-28 01:40:56,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142255629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:56,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:56,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:56,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159430241] [2024-06-28 01:40:56,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:56,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:56,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:56,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 104 transitions, 764 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:56,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:56,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:56,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:57,541 INFO L124 PetriNetUnfolderBase]: 4360/7010 cut-off events. [2024-06-28 01:40:57,541 INFO L125 PetriNetUnfolderBase]: For 30545/30557 co-relation queries the response was YES. [2024-06-28 01:40:57,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25672 conditions, 7010 events. 4360/7010 cut-off events. For 30545/30557 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 43225 event pairs, 1779 based on Foata normal form. 16/6804 useless extension candidates. Maximal degree in co-relation 25636. Up to 6097 conditions per place. [2024-06-28 01:40:57,589 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 107 selfloop transitions, 44 changer transitions 0/160 dead transitions. [2024-06-28 01:40:57,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 160 transitions, 1293 flow [2024-06-28 01:40:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:40:57,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:40:57,592 INFO L175 Difference]: Start difference. First operand has 87 places, 104 transitions, 764 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:40:57,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 160 transitions, 1293 flow [2024-06-28 01:40:57,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 160 transitions, 1242 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:57,615 INFO L231 Difference]: Finished difference. Result has 93 places, 120 transitions, 951 flow [2024-06-28 01:40:57,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=951, PETRI_PLACES=93, PETRI_TRANSITIONS=120} [2024-06-28 01:40:57,615 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-06-28 01:40:57,616 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 120 transitions, 951 flow [2024-06-28 01:40:57,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:57,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:57,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:57,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:40:57,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:57,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1570871738, now seen corresponding path program 2 times [2024-06-28 01:40:57,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:57,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494361268] [2024-06-28 01:40:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:58,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:58,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494361268] [2024-06-28 01:40:58,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494361268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:58,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:58,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:58,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333635445] [2024-06-28 01:40:58,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:58,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:58,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:58,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:58,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:58,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:40:58,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 120 transitions, 951 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:58,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:58,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:40:58,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:59,160 INFO L124 PetriNetUnfolderBase]: 4546/7258 cut-off events. [2024-06-28 01:40:59,161 INFO L125 PetriNetUnfolderBase]: For 42779/42793 co-relation queries the response was YES. [2024-06-28 01:40:59,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30079 conditions, 7258 events. 4546/7258 cut-off events. For 42779/42793 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 44306 event pairs, 1870 based on Foata normal form. 18/7054 useless extension candidates. Maximal degree in co-relation 30040. Up to 6298 conditions per place. [2024-06-28 01:40:59,208 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 116 selfloop transitions, 64 changer transitions 0/189 dead transitions. [2024-06-28 01:40:59,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 189 transitions, 1760 flow [2024-06-28 01:40:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:40:59,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 01:40:59,210 INFO L175 Difference]: Start difference. First operand has 93 places, 120 transitions, 951 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:40:59,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 189 transitions, 1760 flow [2024-06-28 01:40:59,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 189 transitions, 1605 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:59,354 INFO L231 Difference]: Finished difference. Result has 101 places, 150 transitions, 1322 flow [2024-06-28 01:40:59,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1322, PETRI_PLACES=101, PETRI_TRANSITIONS=150} [2024-06-28 01:40:59,356 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-06-28 01:40:59,356 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 150 transitions, 1322 flow [2024-06-28 01:40:59,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:59,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:59,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:59,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:40:59,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:59,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:59,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1570992638, now seen corresponding path program 3 times [2024-06-28 01:40:59,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:59,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459287315] [2024-06-28 01:40:59,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:59,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459287315] [2024-06-28 01:40:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459287315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192977454] [2024-06-28 01:40:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:00,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:00,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 150 transitions, 1322 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:00,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:00,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:00,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:00,929 INFO L124 PetriNetUnfolderBase]: 4711/7507 cut-off events. [2024-06-28 01:41:00,929 INFO L125 PetriNetUnfolderBase]: For 52826/52830 co-relation queries the response was YES. [2024-06-28 01:41:00,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33255 conditions, 7507 events. 4711/7507 cut-off events. For 52826/52830 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 45789 event pairs, 1684 based on Foata normal form. 12/7295 useless extension candidates. Maximal degree in co-relation 33212. Up to 6257 conditions per place. [2024-06-28 01:41:00,972 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 129 selfloop transitions, 72 changer transitions 0/210 dead transitions. [2024-06-28 01:41:00,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 210 transitions, 2151 flow [2024-06-28 01:41:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:41:00,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-28 01:41:00,974 INFO L175 Difference]: Start difference. First operand has 101 places, 150 transitions, 1322 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:41:00,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 210 transitions, 2151 flow [2024-06-28 01:41:01,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 210 transitions, 2064 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:01,006 INFO L231 Difference]: Finished difference. Result has 107 places, 164 transitions, 1587 flow [2024-06-28 01:41:01,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1587, PETRI_PLACES=107, PETRI_TRANSITIONS=164} [2024-06-28 01:41:01,007 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2024-06-28 01:41:01,007 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 164 transitions, 1587 flow [2024-06-28 01:41:01,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:01,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:01,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:01,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:41:01,007 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:01,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1935681042, now seen corresponding path program 4 times [2024-06-28 01:41:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590808734] [2024-06-28 01:41:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:01,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:01,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590808734] [2024-06-28 01:41:01,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590808734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:01,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:01,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:01,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676670111] [2024-06-28 01:41:01,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:01,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:01,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:01,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:01,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:01,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:01,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 164 transitions, 1587 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:01,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:01,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:01,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:02,627 INFO L124 PetriNetUnfolderBase]: 4772/7605 cut-off events. [2024-06-28 01:41:02,627 INFO L125 PetriNetUnfolderBase]: For 66281/66293 co-relation queries the response was YES. [2024-06-28 01:41:02,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36274 conditions, 7605 events. 4772/7605 cut-off events. For 66281/66293 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 46602 event pairs, 1641 based on Foata normal form. 16/7398 useless extension candidates. Maximal degree in co-relation 36229. Up to 6553 conditions per place. [2024-06-28 01:41:02,683 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 123 selfloop transitions, 70 changer transitions 0/202 dead transitions. [2024-06-28 01:41:02,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 202 transitions, 2197 flow [2024-06-28 01:41:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:41:02,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-28 01:41:02,685 INFO L175 Difference]: Start difference. First operand has 107 places, 164 transitions, 1587 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:41:02,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 202 transitions, 2197 flow [2024-06-28 01:41:02,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 202 transitions, 2041 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:02,735 INFO L231 Difference]: Finished difference. Result has 109 places, 168 transitions, 1669 flow [2024-06-28 01:41:02,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1669, PETRI_PLACES=109, PETRI_TRANSITIONS=168} [2024-06-28 01:41:02,736 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-28 01:41:02,736 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 168 transitions, 1669 flow [2024-06-28 01:41:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:02,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:02,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:02,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:41:02,736 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:02,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1935801942, now seen corresponding path program 5 times [2024-06-28 01:41:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645432553] [2024-06-28 01:41:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:03,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:03,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645432553] [2024-06-28 01:41:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645432553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:03,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:03,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11926904] [2024-06-28 01:41:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:03,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:03,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:03,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:03,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 168 transitions, 1669 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:03,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:03,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:03,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:04,363 INFO L124 PetriNetUnfolderBase]: 4983/7897 cut-off events. [2024-06-28 01:41:04,363 INFO L125 PetriNetUnfolderBase]: For 78822/78826 co-relation queries the response was YES. [2024-06-28 01:41:04,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39669 conditions, 7897 events. 4983/7897 cut-off events. For 78822/78826 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 48165 event pairs, 1573 based on Foata normal form. 12/7686 useless extension candidates. Maximal degree in co-relation 39623. Up to 6427 conditions per place. [2024-06-28 01:41:04,428 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 133 selfloop transitions, 78 changer transitions 0/220 dead transitions. [2024-06-28 01:41:04,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 220 transitions, 2521 flow [2024-06-28 01:41:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:41:04,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-28 01:41:04,430 INFO L175 Difference]: Start difference. First operand has 109 places, 168 transitions, 1669 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:41:04,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 220 transitions, 2521 flow [2024-06-28 01:41:04,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 220 transitions, 2367 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:04,503 INFO L231 Difference]: Finished difference. Result has 112 places, 180 transitions, 1913 flow [2024-06-28 01:41:04,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1913, PETRI_PLACES=112, PETRI_TRANSITIONS=180} [2024-06-28 01:41:04,504 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-06-28 01:41:04,504 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 180 transitions, 1913 flow [2024-06-28 01:41:04,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:04,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:04,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:04,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:41:04,505 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:04,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2113856022, now seen corresponding path program 6 times [2024-06-28 01:41:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:04,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853666672] [2024-06-28 01:41:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:04,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:05,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:05,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853666672] [2024-06-28 01:41:05,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853666672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:05,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:05,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456400191] [2024-06-28 01:41:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:05,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:05,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:05,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 180 transitions, 1913 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:05,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:05,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:05,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:06,266 INFO L124 PetriNetUnfolderBase]: 5013/7935 cut-off events. [2024-06-28 01:41:06,266 INFO L125 PetriNetUnfolderBase]: For 95138/95228 co-relation queries the response was YES. [2024-06-28 01:41:06,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42448 conditions, 7935 events. 5013/7935 cut-off events. For 95138/95228 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 48522 event pairs, 1345 based on Foata normal form. 30/7729 useless extension candidates. Maximal degree in co-relation 42400. Up to 6235 conditions per place. [2024-06-28 01:41:06,324 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 147 selfloop transitions, 92 changer transitions 0/248 dead transitions. [2024-06-28 01:41:06,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 248 transitions, 3043 flow [2024-06-28 01:41:06,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:41:06,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-28 01:41:06,327 INFO L175 Difference]: Start difference. First operand has 112 places, 180 transitions, 1913 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:41:06,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 248 transitions, 3043 flow [2024-06-28 01:41:06,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 248 transitions, 2891 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:06,412 INFO L231 Difference]: Finished difference. Result has 118 places, 203 transitions, 2348 flow [2024-06-28 01:41:06,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2348, PETRI_PLACES=118, PETRI_TRANSITIONS=203} [2024-06-28 01:41:06,412 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-06-28 01:41:06,413 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 203 transitions, 2348 flow [2024-06-28 01:41:06,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:06,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:06,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:06,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:41:06,413 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:06,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:06,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2114133069, now seen corresponding path program 1 times [2024-06-28 01:41:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:06,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007362003] [2024-06-28 01:41:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:06,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:07,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007362003] [2024-06-28 01:41:07,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007362003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:07,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:07,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581787294] [2024-06-28 01:41:07,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:07,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:07,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:07,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:07,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:07,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 203 transitions, 2348 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:07,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:07,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:07,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:08,696 INFO L124 PetriNetUnfolderBase]: 4783/7577 cut-off events. [2024-06-28 01:41:08,696 INFO L125 PetriNetUnfolderBase]: For 87408/87408 co-relation queries the response was YES. [2024-06-28 01:41:08,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41338 conditions, 7577 events. 4783/7577 cut-off events. For 87408/87408 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 45456 event pairs, 2026 based on Foata normal form. 4/7378 useless extension candidates. Maximal degree in co-relation 41286. Up to 6729 conditions per place. [2024-06-28 01:41:08,767 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 214 selfloop transitions, 27 changer transitions 0/249 dead transitions. [2024-06-28 01:41:08,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 249 transitions, 3114 flow [2024-06-28 01:41:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:41:08,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-28 01:41:08,769 INFO L175 Difference]: Start difference. First operand has 118 places, 203 transitions, 2348 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:41:08,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 249 transitions, 3114 flow [2024-06-28 01:41:08,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 249 transitions, 2984 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:08,874 INFO L231 Difference]: Finished difference. Result has 124 places, 206 transitions, 2343 flow [2024-06-28 01:41:08,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2343, PETRI_PLACES=124, PETRI_TRANSITIONS=206} [2024-06-28 01:41:08,875 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 72 predicate places. [2024-06-28 01:41:08,875 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 206 transitions, 2343 flow [2024-06-28 01:41:08,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:08,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:08,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:08,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:41:08,876 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:08,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:08,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1783606809, now seen corresponding path program 1 times [2024-06-28 01:41:08,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:08,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468826232] [2024-06-28 01:41:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:08,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:09,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:09,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468826232] [2024-06-28 01:41:09,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468826232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:09,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:09,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:41:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100492368] [2024-06-28 01:41:09,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:09,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:41:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:09,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:41:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:41:09,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:09,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 206 transitions, 2343 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:09,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:09,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:09,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:10,465 INFO L124 PetriNetUnfolderBase]: 4777/7576 cut-off events. [2024-06-28 01:41:10,466 INFO L125 PetriNetUnfolderBase]: For 84787/84787 co-relation queries the response was YES. [2024-06-28 01:41:10,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40560 conditions, 7576 events. 4777/7576 cut-off events. For 84787/84787 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 45447 event pairs, 2135 based on Foata normal form. 2/7369 useless extension candidates. Maximal degree in co-relation 40506. Up to 6781 conditions per place. [2024-06-28 01:41:10,515 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 202 selfloop transitions, 15 changer transitions 0/225 dead transitions. [2024-06-28 01:41:10,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 225 transitions, 2879 flow [2024-06-28 01:41:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:41:10,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:41:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-28 01:41:10,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48695652173913045 [2024-06-28 01:41:10,517 INFO L175 Difference]: Start difference. First operand has 124 places, 206 transitions, 2343 flow. Second operand 5 states and 112 transitions. [2024-06-28 01:41:10,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 225 transitions, 2879 flow [2024-06-28 01:41:10,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 225 transitions, 2784 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:10,574 INFO L231 Difference]: Finished difference. Result has 123 places, 209 transitions, 2316 flow [2024-06-28 01:41:10,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2316, PETRI_PLACES=123, PETRI_TRANSITIONS=209} [2024-06-28 01:41:10,575 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 71 predicate places. [2024-06-28 01:41:10,575 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 209 transitions, 2316 flow [2024-06-28 01:41:10,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:10,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:10,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:10,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:41:10,576 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:10,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1630115345, now seen corresponding path program 1 times [2024-06-28 01:41:10,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:10,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809784594] [2024-06-28 01:41:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:10,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:11,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809784594] [2024-06-28 01:41:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809784594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:11,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:11,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:11,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282358918] [2024-06-28 01:41:11,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:11,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:11,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:11,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 209 transitions, 2316 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:11,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:11,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:11,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:12,702 INFO L124 PetriNetUnfolderBase]: 5021/7987 cut-off events. [2024-06-28 01:41:12,703 INFO L125 PetriNetUnfolderBase]: For 100849/100927 co-relation queries the response was YES. [2024-06-28 01:41:12,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44049 conditions, 7987 events. 5021/7987 cut-off events. For 100849/100927 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 49194 event pairs, 1889 based on Foata normal form. 24/7787 useless extension candidates. Maximal degree in co-relation 43994. Up to 6937 conditions per place. [2024-06-28 01:41:12,757 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 179 selfloop transitions, 72 changer transitions 0/260 dead transitions. [2024-06-28 01:41:12,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 260 transitions, 3158 flow [2024-06-28 01:41:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:41:12,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 01:41:12,760 INFO L175 Difference]: Start difference. First operand has 123 places, 209 transitions, 2316 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:41:12,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 260 transitions, 3158 flow [2024-06-28 01:41:12,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 260 transitions, 3122 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:12,831 INFO L231 Difference]: Finished difference. Result has 129 places, 219 transitions, 2635 flow [2024-06-28 01:41:12,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2635, PETRI_PLACES=129, PETRI_TRANSITIONS=219} [2024-06-28 01:41:12,831 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 77 predicate places. [2024-06-28 01:41:12,831 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 219 transitions, 2635 flow [2024-06-28 01:41:12,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:12,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:12,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:12,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:41:12,832 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:12,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1452293129, now seen corresponding path program 2 times [2024-06-28 01:41:12,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:12,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662418205] [2024-06-28 01:41:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:12,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:13,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:13,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662418205] [2024-06-28 01:41:13,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662418205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:13,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:13,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:13,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285570753] [2024-06-28 01:41:13,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:13,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:13,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:13,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:13,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:13,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:13,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 219 transitions, 2635 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:13,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:13,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:13,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:14,884 INFO L124 PetriNetUnfolderBase]: 5056/8002 cut-off events. [2024-06-28 01:41:14,884 INFO L125 PetriNetUnfolderBase]: For 109105/109177 co-relation queries the response was YES. [2024-06-28 01:41:14,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45862 conditions, 8002 events. 5056/8002 cut-off events. For 109105/109177 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 48888 event pairs, 1671 based on Foata normal form. 26/7806 useless extension candidates. Maximal degree in co-relation 45805. Up to 6964 conditions per place. [2024-06-28 01:41:15,055 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 187 selfloop transitions, 76 changer transitions 0/272 dead transitions. [2024-06-28 01:41:15,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 272 transitions, 3625 flow [2024-06-28 01:41:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:41:15,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:41:15,058 INFO L175 Difference]: Start difference. First operand has 129 places, 219 transitions, 2635 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:41:15,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 272 transitions, 3625 flow [2024-06-28 01:41:15,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 272 transitions, 3423 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:15,158 INFO L231 Difference]: Finished difference. Result has 132 places, 231 transitions, 2877 flow [2024-06-28 01:41:15,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2877, PETRI_PLACES=132, PETRI_TRANSITIONS=231} [2024-06-28 01:41:15,159 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 80 predicate places. [2024-06-28 01:41:15,159 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 231 transitions, 2877 flow [2024-06-28 01:41:15,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:15,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:15,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:15,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:41:15,159 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:15,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1456139113, now seen corresponding path program 1 times [2024-06-28 01:41:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:15,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3553233] [2024-06-28 01:41:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:15,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:15,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3553233] [2024-06-28 01:41:15,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3553233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:15,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:15,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691252815] [2024-06-28 01:41:15,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:15,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:15,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:15,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:41:15,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 231 transitions, 2877 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 01:41:15,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:15,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:41:15,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:17,251 INFO L124 PetriNetUnfolderBase]: 5608/8674 cut-off events. [2024-06-28 01:41:17,251 INFO L125 PetriNetUnfolderBase]: For 114711/114715 co-relation queries the response was YES. [2024-06-28 01:41:17,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48884 conditions, 8674 events. 5608/8674 cut-off events. For 114711/114715 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 50810 event pairs, 1752 based on Foata normal form. 10/8455 useless extension candidates. Maximal degree in co-relation 48826. Up to 7255 conditions per place. [2024-06-28 01:41:17,330 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 188 selfloop transitions, 123 changer transitions 0/318 dead transitions. [2024-06-28 01:41:17,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 318 transitions, 4476 flow [2024-06-28 01:41:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-28 01:41:17,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:41:17,341 INFO L175 Difference]: Start difference. First operand has 132 places, 231 transitions, 2877 flow. Second operand 9 states and 207 transitions. [2024-06-28 01:41:17,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 318 transitions, 4476 flow [2024-06-28 01:41:17,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 318 transitions, 4253 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:17,600 INFO L231 Difference]: Finished difference. Result has 139 places, 266 transitions, 3672 flow [2024-06-28 01:41:17,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3672, PETRI_PLACES=139, PETRI_TRANSITIONS=266} [2024-06-28 01:41:17,601 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-06-28 01:41:17,601 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 266 transitions, 3672 flow [2024-06-28 01:41:17,601 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 01:41:17,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:17,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:17,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:41:17,602 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:17,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -90242631, now seen corresponding path program 3 times [2024-06-28 01:41:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:17,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56242027] [2024-06-28 01:41:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:17,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:18,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:18,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56242027] [2024-06-28 01:41:18,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56242027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:18,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:18,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:18,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742652691] [2024-06-28 01:41:18,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:18,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:18,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:18,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 266 transitions, 3672 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:18,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:18,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:18,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:19,986 INFO L124 PetriNetUnfolderBase]: 5098/8118 cut-off events. [2024-06-28 01:41:19,987 INFO L125 PetriNetUnfolderBase]: For 128672/128762 co-relation queries the response was YES. [2024-06-28 01:41:20,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48086 conditions, 8118 events. 5098/8118 cut-off events. For 128672/128762 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 49946 event pairs, 1862 based on Foata normal form. 30/7920 useless extension candidates. Maximal degree in co-relation 48025. Up to 6912 conditions per place. [2024-06-28 01:41:20,078 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 190 selfloop transitions, 104 changer transitions 0/304 dead transitions. [2024-06-28 01:41:20,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 304 transitions, 4532 flow [2024-06-28 01:41:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:41:20,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-28 01:41:20,079 INFO L175 Difference]: Start difference. First operand has 139 places, 266 transitions, 3672 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:41:20,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 304 transitions, 4532 flow [2024-06-28 01:41:20,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 304 transitions, 4410 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:20,232 INFO L231 Difference]: Finished difference. Result has 142 places, 270 transitions, 3926 flow [2024-06-28 01:41:20,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3926, PETRI_PLACES=142, PETRI_TRANSITIONS=270} [2024-06-28 01:41:20,233 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-06-28 01:41:20,233 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 270 transitions, 3926 flow [2024-06-28 01:41:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:20,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:20,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:20,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:41:20,234 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:20,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:20,234 INFO L85 PathProgramCache]: Analyzing trace with hash -119674351, now seen corresponding path program 2 times [2024-06-28 01:41:20,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:20,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256350463] [2024-06-28 01:41:20,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:20,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:21,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:21,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256350463] [2024-06-28 01:41:21,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256350463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:21,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:21,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:21,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297141665] [2024-06-28 01:41:21,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:21,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:21,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:21,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:21,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:21,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:41:21,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 270 transitions, 3926 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 01:41:21,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:21,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:41:21,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:22,497 INFO L124 PetriNetUnfolderBase]: 5598/8702 cut-off events. [2024-06-28 01:41:22,497 INFO L125 PetriNetUnfolderBase]: For 133685/133693 co-relation queries the response was YES. [2024-06-28 01:41:22,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51387 conditions, 8702 events. 5598/8702 cut-off events. For 133685/133693 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 51333 event pairs, 2326 based on Foata normal form. 10/8484 useless extension candidates. Maximal degree in co-relation 51324. Up to 7777 conditions per place. [2024-06-28 01:41:22,578 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 268 selfloop transitions, 62 changer transitions 0/337 dead transitions. [2024-06-28 01:41:22,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 337 transitions, 5192 flow [2024-06-28 01:41:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:22,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:22,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:41:22,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 01:41:22,580 INFO L175 Difference]: Start difference. First operand has 142 places, 270 transitions, 3926 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:41:22,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 337 transitions, 5192 flow [2024-06-28 01:41:22,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 337 transitions, 5006 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:22,855 INFO L231 Difference]: Finished difference. Result has 146 places, 293 transitions, 4241 flow [2024-06-28 01:41:22,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3740, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4241, PETRI_PLACES=146, PETRI_TRANSITIONS=293} [2024-06-28 01:41:22,856 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-06-28 01:41:22,856 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 293 transitions, 4241 flow [2024-06-28 01:41:22,856 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 01:41:22,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:22,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:22,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:41:22,857 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:22,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:22,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1105034833, now seen corresponding path program 3 times [2024-06-28 01:41:22,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:22,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970818019] [2024-06-28 01:41:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:22,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:23,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:23,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970818019] [2024-06-28 01:41:23,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970818019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:23,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:23,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:23,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012273864] [2024-06-28 01:41:23,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:23,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:23,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:23,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:23,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:41:23,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 293 transitions, 4241 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 01:41:23,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:23,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:41:23,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:25,115 INFO L124 PetriNetUnfolderBase]: 5727/8791 cut-off events. [2024-06-28 01:41:25,116 INFO L125 PetriNetUnfolderBase]: For 142131/142137 co-relation queries the response was YES. [2024-06-28 01:41:25,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53457 conditions, 8791 events. 5727/8791 cut-off events. For 142131/142137 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 51070 event pairs, 1476 based on Foata normal form. 10/8573 useless extension candidates. Maximal degree in co-relation 53392. Up to 7093 conditions per place. [2024-06-28 01:41:25,195 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 213 selfloop transitions, 155 changer transitions 0/375 dead transitions. [2024-06-28 01:41:25,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 375 transitions, 5778 flow [2024-06-28 01:41:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:41:25,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-28 01:41:25,197 INFO L175 Difference]: Start difference. First operand has 146 places, 293 transitions, 4241 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:41:25,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 375 transitions, 5778 flow [2024-06-28 01:41:25,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 375 transitions, 5616 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:25,410 INFO L231 Difference]: Finished difference. Result has 152 places, 326 transitions, 5038 flow [2024-06-28 01:41:25,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5038, PETRI_PLACES=152, PETRI_TRANSITIONS=326} [2024-06-28 01:41:25,411 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-28 01:41:25,411 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 326 transitions, 5038 flow [2024-06-28 01:41:25,411 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 01:41:25,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:25,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:25,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:41:25,412 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:25,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1618517153, now seen corresponding path program 4 times [2024-06-28 01:41:25,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:25,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52986924] [2024-06-28 01:41:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:26,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52986924] [2024-06-28 01:41:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52986924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:26,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:26,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378916986] [2024-06-28 01:41:26,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:26,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:26,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:26,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:41:26,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 326 transitions, 5038 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 01:41:26,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:26,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:41:26,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:27,567 INFO L124 PetriNetUnfolderBase]: 5758/8912 cut-off events. [2024-06-28 01:41:27,567 INFO L125 PetriNetUnfolderBase]: For 158716/158740 co-relation queries the response was YES. [2024-06-28 01:41:27,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56231 conditions, 8912 events. 5758/8912 cut-off events. For 158716/158740 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 52535 event pairs, 2046 based on Foata normal form. 18/8702 useless extension candidates. Maximal degree in co-relation 56163. Up to 7931 conditions per place. [2024-06-28 01:41:27,649 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 301 selfloop transitions, 84 changer transitions 0/392 dead transitions. [2024-06-28 01:41:27,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 392 transitions, 6431 flow [2024-06-28 01:41:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 01:41:27,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2024-06-28 01:41:27,650 INFO L175 Difference]: Start difference. First operand has 152 places, 326 transitions, 5038 flow. Second operand 8 states and 178 transitions. [2024-06-28 01:41:27,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 392 transitions, 6431 flow [2024-06-28 01:41:27,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 392 transitions, 6143 flow, removed 121 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:27,969 INFO L231 Difference]: Finished difference. Result has 159 places, 343 transitions, 5236 flow [2024-06-28 01:41:27,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4804, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5236, PETRI_PLACES=159, PETRI_TRANSITIONS=343} [2024-06-28 01:41:27,970 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 107 predicate places. [2024-06-28 01:41:27,970 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 343 transitions, 5236 flow [2024-06-28 01:41:27,970 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 01:41:27,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:27,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:27,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:41:27,971 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:27,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:27,971 INFO L85 PathProgramCache]: Analyzing trace with hash 25348919, now seen corresponding path program 5 times [2024-06-28 01:41:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:27,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88001359] [2024-06-28 01:41:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:27,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:28,802 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 01:41:28,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:28,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88001359] [2024-06-28 01:41:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88001359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471376983] [2024-06-28 01:41:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:28,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:41:28,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 343 transitions, 5236 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 01:41:28,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:28,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:41:28,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:30,189 INFO L124 PetriNetUnfolderBase]: 5763/8917 cut-off events. [2024-06-28 01:41:30,189 INFO L125 PetriNetUnfolderBase]: For 168070/168094 co-relation queries the response was YES. [2024-06-28 01:41:30,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57648 conditions, 8917 events. 5763/8917 cut-off events. For 168070/168094 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 52509 event pairs, 2061 based on Foata normal form. 18/8707 useless extension candidates. Maximal degree in co-relation 57577. Up to 7839 conditions per place. [2024-06-28 01:41:30,285 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 285 selfloop transitions, 114 changer transitions 0/406 dead transitions. [2024-06-28 01:41:30,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 406 transitions, 6639 flow [2024-06-28 01:41:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:41:30,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-28 01:41:30,286 INFO L175 Difference]: Start difference. First operand has 159 places, 343 transitions, 5236 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:41:30,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 406 transitions, 6639 flow [2024-06-28 01:41:30,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 406 transitions, 6436 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:30,605 INFO L231 Difference]: Finished difference. Result has 165 places, 357 transitions, 5582 flow [2024-06-28 01:41:30,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5033, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5582, PETRI_PLACES=165, PETRI_TRANSITIONS=357} [2024-06-28 01:41:30,606 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-28 01:41:30,606 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 357 transitions, 5582 flow [2024-06-28 01:41:30,606 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 01:41:30,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:30,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:30,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:41:30,607 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:30,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1322131937, now seen corresponding path program 1 times [2024-06-28 01:41:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:30,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087970973] [2024-06-28 01:41:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:31,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:31,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087970973] [2024-06-28 01:41:31,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087970973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:31,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:31,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:31,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284816648] [2024-06-28 01:41:31,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:31,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:31,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:31,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:31,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 357 transitions, 5582 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:31,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:31,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:31,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:32,905 INFO L124 PetriNetUnfolderBase]: 5438/8545 cut-off events. [2024-06-28 01:41:32,905 INFO L125 PetriNetUnfolderBase]: For 187909/187923 co-relation queries the response was YES. [2024-06-28 01:41:32,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57407 conditions, 8545 events. 5438/8545 cut-off events. For 187909/187923 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 51854 event pairs, 1523 based on Foata normal form. 18/8333 useless extension candidates. Maximal degree in co-relation 57334. Up to 7410 conditions per place. [2024-06-28 01:41:33,002 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 334 selfloop transitions, 67 changer transitions 0/416 dead transitions. [2024-06-28 01:41:33,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 416 transitions, 6748 flow [2024-06-28 01:41:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:41:33,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-06-28 01:41:33,004 INFO L175 Difference]: Start difference. First operand has 165 places, 357 transitions, 5582 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:41:33,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 416 transitions, 6748 flow [2024-06-28 01:41:33,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 416 transitions, 6519 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:33,326 INFO L231 Difference]: Finished difference. Result has 172 places, 369 transitions, 5678 flow [2024-06-28 01:41:33,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5678, PETRI_PLACES=172, PETRI_TRANSITIONS=369} [2024-06-28 01:41:33,326 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 120 predicate places. [2024-06-28 01:41:33,327 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 369 transitions, 5678 flow [2024-06-28 01:41:33,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:33,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:33,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:33,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:41:33,327 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:33,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1004166955, now seen corresponding path program 2 times [2024-06-28 01:41:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:33,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890131487] [2024-06-28 01:41:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:33,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:34,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:34,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890131487] [2024-06-28 01:41:34,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890131487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:34,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:34,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:34,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144007877] [2024-06-28 01:41:34,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:34,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:34,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:34,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:34,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:34,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 369 transitions, 5678 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:34,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:34,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:34,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:35,894 INFO L124 PetriNetUnfolderBase]: 5520/8677 cut-off events. [2024-06-28 01:41:35,894 INFO L125 PetriNetUnfolderBase]: For 212130/212144 co-relation queries the response was YES. [2024-06-28 01:41:35,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60372 conditions, 8677 events. 5520/8677 cut-off events. For 212130/212144 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 52872 event pairs, 1833 based on Foata normal form. 18/8467 useless extension candidates. Maximal degree in co-relation 60295. Up to 7546 conditions per place. [2024-06-28 01:41:35,988 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 340 selfloop transitions, 77 changer transitions 0/432 dead transitions. [2024-06-28 01:41:35,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 432 transitions, 7043 flow [2024-06-28 01:41:35,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:35,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 01:41:35,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2024-06-28 01:41:35,989 INFO L175 Difference]: Start difference. First operand has 172 places, 369 transitions, 5678 flow. Second operand 9 states and 211 transitions. [2024-06-28 01:41:35,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 432 transitions, 7043 flow [2024-06-28 01:41:36,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 432 transitions, 6749 flow, removed 113 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:36,288 INFO L231 Difference]: Finished difference. Result has 177 places, 382 transitions, 5846 flow [2024-06-28 01:41:36,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5494, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5846, PETRI_PLACES=177, PETRI_TRANSITIONS=382} [2024-06-28 01:41:36,293 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-06-28 01:41:36,293 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 382 transitions, 5846 flow [2024-06-28 01:41:36,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:36,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:36,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:36,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:41:36,294 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:36,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1006032535, now seen corresponding path program 3 times [2024-06-28 01:41:36,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:36,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365452588] [2024-06-28 01:41:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:36,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:37,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:37,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365452588] [2024-06-28 01:41:37,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365452588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:37,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:37,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:37,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098605706] [2024-06-28 01:41:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:37,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:37,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:37,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 382 transitions, 5846 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:37,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:37,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:37,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:38,745 INFO L124 PetriNetUnfolderBase]: 5575/8762 cut-off events. [2024-06-28 01:41:38,746 INFO L125 PetriNetUnfolderBase]: For 223391/223401 co-relation queries the response was YES. [2024-06-28 01:41:38,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61904 conditions, 8762 events. 5575/8762 cut-off events. For 223391/223401 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 53494 event pairs, 1794 based on Foata normal form. 18/8557 useless extension candidates. Maximal degree in co-relation 61825. Up to 7556 conditions per place. [2024-06-28 01:41:38,992 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 331 selfloop transitions, 115 changer transitions 0/461 dead transitions. [2024-06-28 01:41:38,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 461 transitions, 7754 flow [2024-06-28 01:41:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:41:38,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-28 01:41:38,995 INFO L175 Difference]: Start difference. First operand has 177 places, 382 transitions, 5846 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:41:38,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 461 transitions, 7754 flow [2024-06-28 01:41:39,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 461 transitions, 7536 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:39,346 INFO L231 Difference]: Finished difference. Result has 184 places, 415 transitions, 6767 flow [2024-06-28 01:41:39,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5654, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6767, PETRI_PLACES=184, PETRI_TRANSITIONS=415} [2024-06-28 01:41:39,348 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-06-28 01:41:39,348 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 415 transitions, 6767 flow [2024-06-28 01:41:39,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:39,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:39,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:39,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:41:39,349 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:39,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash 856266607, now seen corresponding path program 4 times [2024-06-28 01:41:39,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:39,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290215758] [2024-06-28 01:41:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:39,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:40,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:40,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290215758] [2024-06-28 01:41:40,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290215758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:40,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:40,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:40,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500455555] [2024-06-28 01:41:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:40,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:40,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:40,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:40,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:40,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:40,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 415 transitions, 6767 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:40,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:40,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:40,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:41,992 INFO L124 PetriNetUnfolderBase]: 5809/9149 cut-off events. [2024-06-28 01:41:41,992 INFO L125 PetriNetUnfolderBase]: For 245225/245245 co-relation queries the response was YES. [2024-06-28 01:41:42,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65894 conditions, 9149 events. 5809/9149 cut-off events. For 245225/245245 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 56303 event pairs, 1600 based on Foata normal form. 24/8928 useless extension candidates. Maximal degree in co-relation 65811. Up to 7893 conditions per place. [2024-06-28 01:41:42,104 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 375 selfloop transitions, 100 changer transitions 0/490 dead transitions. [2024-06-28 01:41:42,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 490 transitions, 8277 flow [2024-06-28 01:41:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:42,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:41:42,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-28 01:41:42,113 INFO L175 Difference]: Start difference. First operand has 184 places, 415 transitions, 6767 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:41:42,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 490 transitions, 8277 flow [2024-06-28 01:41:42,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 490 transitions, 8061 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:42,634 INFO L231 Difference]: Finished difference. Result has 191 places, 441 transitions, 7149 flow [2024-06-28 01:41:42,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6571, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7149, PETRI_PLACES=191, PETRI_TRANSITIONS=441} [2024-06-28 01:41:42,635 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 139 predicate places. [2024-06-28 01:41:42,635 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 441 transitions, 7149 flow [2024-06-28 01:41:42,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:42,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:42,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:41:42,636 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:42,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2071414717, now seen corresponding path program 5 times [2024-06-28 01:41:42,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:42,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976953630] [2024-06-28 01:41:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:43,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:43,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976953630] [2024-06-28 01:41:43,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976953630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:43,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:43,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:43,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405960320] [2024-06-28 01:41:43,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:43,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:43,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:43,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:43,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:43,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:43,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 441 transitions, 7149 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:43,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:43,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:43,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:45,632 INFO L124 PetriNetUnfolderBase]: 5919/9320 cut-off events. [2024-06-28 01:41:45,632 INFO L125 PetriNetUnfolderBase]: For 268065/268085 co-relation queries the response was YES. [2024-06-28 01:41:45,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67902 conditions, 9320 events. 5919/9320 cut-off events. For 268065/268085 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 57513 event pairs, 1641 based on Foata normal form. 28/9106 useless extension candidates. Maximal degree in co-relation 67817. Up to 8002 conditions per place. [2024-06-28 01:41:45,774 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 365 selfloop transitions, 115 changer transitions 0/495 dead transitions. [2024-06-28 01:41:45,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 495 transitions, 8499 flow [2024-06-28 01:41:45,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:41:45,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-28 01:41:45,775 INFO L175 Difference]: Start difference. First operand has 191 places, 441 transitions, 7149 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:41:45,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 495 transitions, 8499 flow [2024-06-28 01:41:46,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 495 transitions, 8274 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:46,485 INFO L231 Difference]: Finished difference. Result has 195 places, 447 transitions, 7304 flow [2024-06-28 01:41:46,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7304, PETRI_PLACES=195, PETRI_TRANSITIONS=447} [2024-06-28 01:41:46,486 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 143 predicate places. [2024-06-28 01:41:46,486 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 447 transitions, 7304 flow [2024-06-28 01:41:46,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:46,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:46,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:46,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:41:46,487 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:46,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2104542339, now seen corresponding path program 6 times [2024-06-28 01:41:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:46,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827314137] [2024-06-28 01:41:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:46,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:47,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:47,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827314137] [2024-06-28 01:41:47,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827314137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:47,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:47,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:47,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416277828] [2024-06-28 01:41:47,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:47,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:47,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:47,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:47,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:47,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:47,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 447 transitions, 7304 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:47,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:47,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:47,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:49,136 INFO L124 PetriNetUnfolderBase]: 6090/9601 cut-off events. [2024-06-28 01:41:49,136 INFO L125 PetriNetUnfolderBase]: For 308356/308370 co-relation queries the response was YES. [2024-06-28 01:41:49,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71271 conditions, 9601 events. 6090/9601 cut-off events. For 308356/308370 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 59613 event pairs, 1627 based on Foata normal form. 42/9414 useless extension candidates. Maximal degree in co-relation 71185. Up to 7859 conditions per place. [2024-06-28 01:41:49,264 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 332 selfloop transitions, 155 changer transitions 0/502 dead transitions. [2024-06-28 01:41:49,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 502 transitions, 8711 flow [2024-06-28 01:41:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 01:41:49,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265700483091788 [2024-06-28 01:41:49,266 INFO L175 Difference]: Start difference. First operand has 195 places, 447 transitions, 7304 flow. Second operand 9 states and 218 transitions. [2024-06-28 01:41:49,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 502 transitions, 8711 flow [2024-06-28 01:41:49,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 502 transitions, 8403 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:49,985 INFO L231 Difference]: Finished difference. Result has 197 places, 450 transitions, 7435 flow [2024-06-28 01:41:49,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6996, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7435, PETRI_PLACES=197, PETRI_TRANSITIONS=450} [2024-06-28 01:41:49,986 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 145 predicate places. [2024-06-28 01:41:49,986 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 450 transitions, 7435 flow [2024-06-28 01:41:49,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:49,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:49,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:49,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:41:49,987 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:49,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2104326858, now seen corresponding path program 1 times [2024-06-28 01:41:49,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:49,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328827450] [2024-06-28 01:41:49,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:49,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:50,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328827450] [2024-06-28 01:41:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328827450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:50,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:50,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:50,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904663661] [2024-06-28 01:41:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:50,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:50,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:50,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:50,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:41:50,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 450 transitions, 7435 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 01:41:50,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:50,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:41:50,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:52,993 INFO L124 PetriNetUnfolderBase]: 6833/10450 cut-off events. [2024-06-28 01:41:52,994 INFO L125 PetriNetUnfolderBase]: For 316254/316264 co-relation queries the response was YES. [2024-06-28 01:41:53,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76421 conditions, 10450 events. 6833/10450 cut-off events. For 316254/316264 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 62116 event pairs, 2352 based on Foata normal form. 14/10255 useless extension candidates. Maximal degree in co-relation 76334. Up to 9587 conditions per place. [2024-06-28 01:41:53,110 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 451 selfloop transitions, 55 changer transitions 0/513 dead transitions. [2024-06-28 01:41:53,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 513 transitions, 8958 flow [2024-06-28 01:41:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:41:53,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:41:53,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 219 transitions. [2024-06-28 01:41:53,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47608695652173916 [2024-06-28 01:41:53,111 INFO L175 Difference]: Start difference. First operand has 197 places, 450 transitions, 7435 flow. Second operand 10 states and 219 transitions. [2024-06-28 01:41:53,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 513 transitions, 8958 flow [2024-06-28 01:41:53,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 513 transitions, 8579 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:53,748 INFO L231 Difference]: Finished difference. Result has 202 places, 457 transitions, 7353 flow [2024-06-28 01:41:53,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7060, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7353, PETRI_PLACES=202, PETRI_TRANSITIONS=457} [2024-06-28 01:41:53,749 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 150 predicate places. [2024-06-28 01:41:53,749 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 457 transitions, 7353 flow [2024-06-28 01:41:53,749 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 01:41:53,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:53,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:53,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:41:53,750 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:53,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1859278108, now seen corresponding path program 1 times [2024-06-28 01:41:53,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:53,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124025277] [2024-06-28 01:41:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:53,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:54,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124025277] [2024-06-28 01:41:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124025277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:54,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:54,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016332985] [2024-06-28 01:41:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:54,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:54,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:54,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:41:54,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 457 transitions, 7353 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 01:41:54,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:54,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:41:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:56,079 INFO L124 PetriNetUnfolderBase]: 6872/10561 cut-off events. [2024-06-28 01:41:56,079 INFO L125 PetriNetUnfolderBase]: For 309163/309173 co-relation queries the response was YES. [2024-06-28 01:41:56,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76086 conditions, 10561 events. 6872/10561 cut-off events. For 309163/309173 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 63234 event pairs, 2385 based on Foata normal form. 11/10341 useless extension candidates. Maximal degree in co-relation 75996. Up to 9696 conditions per place. [2024-06-28 01:41:56,202 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 459 selfloop transitions, 44 changer transitions 0/510 dead transitions. [2024-06-28 01:41:56,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 510 transitions, 8901 flow [2024-06-28 01:41:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:41:56,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:41:56,203 INFO L175 Difference]: Start difference. First operand has 202 places, 457 transitions, 7353 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:41:56,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 510 transitions, 8901 flow [2024-06-28 01:41:56,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 510 transitions, 8719 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:56,904 INFO L231 Difference]: Finished difference. Result has 206 places, 473 transitions, 7491 flow [2024-06-28 01:41:56,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7171, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7491, PETRI_PLACES=206, PETRI_TRANSITIONS=473} [2024-06-28 01:41:56,904 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 154 predicate places. [2024-06-28 01:41:56,904 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 473 transitions, 7491 flow [2024-06-28 01:41:56,905 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 01:41:56,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:56,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:56,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:41:56,905 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:56,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:56,906 INFO L85 PathProgramCache]: Analyzing trace with hash 465776209, now seen corresponding path program 7 times [2024-06-28 01:41:56,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:56,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393561179] [2024-06-28 01:41:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:56,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:57,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:57,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393561179] [2024-06-28 01:41:57,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393561179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:57,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:57,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:57,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063990856] [2024-06-28 01:41:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:57,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:57,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:57,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:57,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:41:57,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 473 transitions, 7491 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:57,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:57,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:41:57,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:59,756 INFO L124 PetriNetUnfolderBase]: 6250/9840 cut-off events. [2024-06-28 01:41:59,757 INFO L125 PetriNetUnfolderBase]: For 338143/338163 co-relation queries the response was YES. [2024-06-28 01:41:59,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74796 conditions, 9840 events. 6250/9840 cut-off events. For 338143/338163 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 61333 event pairs, 1622 based on Foata normal form. 24/9625 useless extension candidates. Maximal degree in co-relation 74702. Up to 8299 conditions per place. [2024-06-28 01:41:59,887 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 380 selfloop transitions, 120 changer transitions 0/516 dead transitions. [2024-06-28 01:41:59,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 516 transitions, 8841 flow [2024-06-28 01:41:59,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:41:59,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-28 01:41:59,889 INFO L175 Difference]: Start difference. First operand has 206 places, 473 transitions, 7491 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:41:59,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 516 transitions, 8841 flow [2024-06-28 01:42:00,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 516 transitions, 8779 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-28 01:42:00,687 INFO L231 Difference]: Finished difference. Result has 213 places, 476 transitions, 7833 flow [2024-06-28 01:42:00,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7429, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7833, PETRI_PLACES=213, PETRI_TRANSITIONS=476} [2024-06-28 01:42:00,688 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 161 predicate places. [2024-06-28 01:42:00,688 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 476 transitions, 7833 flow [2024-06-28 01:42:00,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:00,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:00,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:00,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:42:00,689 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:00,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:00,689 INFO L85 PathProgramCache]: Analyzing trace with hash 468518779, now seen corresponding path program 8 times [2024-06-28 01:42:00,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686656085] [2024-06-28 01:42:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:01,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:01,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686656085] [2024-06-28 01:42:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686656085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536613400] [2024-06-28 01:42:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:01,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:01,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:01,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 476 transitions, 7833 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:01,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:01,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:01,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:03,539 INFO L124 PetriNetUnfolderBase]: 6293/9774 cut-off events. [2024-06-28 01:42:03,539 INFO L125 PetriNetUnfolderBase]: For 366949/366963 co-relation queries the response was YES. [2024-06-28 01:42:03,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77108 conditions, 9774 events. 6293/9774 cut-off events. For 366949/366963 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 60139 event pairs, 1894 based on Foata normal form. 18/9595 useless extension candidates. Maximal degree in co-relation 77011. Up to 8346 conditions per place. [2024-06-28 01:42:03,697 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 360 selfloop transitions, 144 changer transitions 0/520 dead transitions. [2024-06-28 01:42:03,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 520 transitions, 9221 flow [2024-06-28 01:42:03,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:42:03,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081521739130435 [2024-06-28 01:42:03,699 INFO L175 Difference]: Start difference. First operand has 213 places, 476 transitions, 7833 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:42:03,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 520 transitions, 9221 flow [2024-06-28 01:42:04,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 520 transitions, 8820 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:04,824 INFO L231 Difference]: Finished difference. Result has 214 places, 479 transitions, 7888 flow [2024-06-28 01:42:04,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7450, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7888, PETRI_PLACES=214, PETRI_TRANSITIONS=479} [2024-06-28 01:42:04,825 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-28 01:42:04,825 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 479 transitions, 7888 flow [2024-06-28 01:42:04,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:04,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:04,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:04,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:42:04,825 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:04,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash 427830273, now seen corresponding path program 1 times [2024-06-28 01:42:04,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:04,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841062008] [2024-06-28 01:42:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:04,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:05,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:05,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841062008] [2024-06-28 01:42:05,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841062008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:05,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:05,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:05,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140438320] [2024-06-28 01:42:05,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:05,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:05,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:05,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:05,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 479 transitions, 7888 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 01:42:05,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:05,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:05,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:07,681 INFO L124 PetriNetUnfolderBase]: 7092/10861 cut-off events. [2024-06-28 01:42:07,681 INFO L125 PetriNetUnfolderBase]: For 317713/317737 co-relation queries the response was YES. [2024-06-28 01:42:07,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79843 conditions, 10861 events. 7092/10861 cut-off events. For 317713/317737 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 64968 event pairs, 1836 based on Foata normal form. 28/10658 useless extension candidates. Maximal degree in co-relation 79746. Up to 9595 conditions per place. [2024-06-28 01:42:07,835 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 420 selfloop transitions, 114 changer transitions 0/541 dead transitions. [2024-06-28 01:42:07,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 541 transitions, 9524 flow [2024-06-28 01:42:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-28 01:42:07,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-28 01:42:07,837 INFO L175 Difference]: Start difference. First operand has 214 places, 479 transitions, 7888 flow. Second operand 9 states and 204 transitions. [2024-06-28 01:42:07,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 541 transitions, 9524 flow [2024-06-28 01:42:08,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 541 transitions, 9149 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:08,763 INFO L231 Difference]: Finished difference. Result has 218 places, 492 transitions, 8045 flow [2024-06-28 01:42:08,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7518, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8045, PETRI_PLACES=218, PETRI_TRANSITIONS=492} [2024-06-28 01:42:08,764 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 166 predicate places. [2024-06-28 01:42:08,764 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 492 transitions, 8045 flow [2024-06-28 01:42:08,764 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 01:42:08,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:08,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:42:08,764 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:08,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash 544009221, now seen corresponding path program 9 times [2024-06-28 01:42:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:08,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399763500] [2024-06-28 01:42:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399763500] [2024-06-28 01:42:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399763500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:09,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:09,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:09,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719263396] [2024-06-28 01:42:09,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:09,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:09,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:09,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:09,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 492 transitions, 8045 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:09,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:09,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:09,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:11,870 INFO L124 PetriNetUnfolderBase]: 6595/10352 cut-off events. [2024-06-28 01:42:11,871 INFO L125 PetriNetUnfolderBase]: For 316625/316673 co-relation queries the response was YES. [2024-06-28 01:42:11,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77027 conditions, 10352 events. 6595/10352 cut-off events. For 316625/316673 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 64762 event pairs, 1494 based on Foata normal form. 38/10094 useless extension candidates. Maximal degree in co-relation 76928. Up to 8088 conditions per place. [2024-06-28 01:42:11,998 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 336 selfloop transitions, 189 changer transitions 0/543 dead transitions. [2024-06-28 01:42:11,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 543 transitions, 9652 flow [2024-06-28 01:42:11,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:42:12,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-28 01:42:12,000 INFO L175 Difference]: Start difference. First operand has 218 places, 492 transitions, 8045 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:42:12,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 543 transitions, 9652 flow [2024-06-28 01:42:12,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 543 transitions, 9366 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:12,770 INFO L231 Difference]: Finished difference. Result has 220 places, 495 transitions, 8264 flow [2024-06-28 01:42:12,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7759, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8264, PETRI_PLACES=220, PETRI_TRANSITIONS=495} [2024-06-28 01:42:12,771 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 168 predicate places. [2024-06-28 01:42:12,771 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 495 transitions, 8264 flow [2024-06-28 01:42:12,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:12,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:12,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:12,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:42:12,772 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:12,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:12,772 INFO L85 PathProgramCache]: Analyzing trace with hash 544015173, now seen corresponding path program 2 times [2024-06-28 01:42:12,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:12,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159345982] [2024-06-28 01:42:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:12,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:13,635 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 01:42:13,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:13,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159345982] [2024-06-28 01:42:13,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159345982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:13,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:13,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830920199] [2024-06-28 01:42:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:13,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:13,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:13,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 495 transitions, 8264 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 01:42:13,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:13,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:13,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:16,111 INFO L124 PetriNetUnfolderBase]: 7482/11419 cut-off events. [2024-06-28 01:42:16,111 INFO L125 PetriNetUnfolderBase]: For 329258/329270 co-relation queries the response was YES. [2024-06-28 01:42:16,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85168 conditions, 11419 events. 7482/11419 cut-off events. For 329258/329270 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 68471 event pairs, 1742 based on Foata normal form. 16/11202 useless extension candidates. Maximal degree in co-relation 85068. Up to 9440 conditions per place. [2024-06-28 01:42:16,254 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 359 selfloop transitions, 201 changer transitions 0/567 dead transitions. [2024-06-28 01:42:16,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 567 transitions, 10253 flow [2024-06-28 01:42:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:42:16,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-28 01:42:16,256 INFO L175 Difference]: Start difference. First operand has 220 places, 495 transitions, 8264 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:42:16,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 567 transitions, 10253 flow [2024-06-28 01:42:17,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 567 transitions, 9786 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:17,278 INFO L231 Difference]: Finished difference. Result has 224 places, 513 transitions, 8607 flow [2024-06-28 01:42:17,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7831, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8607, PETRI_PLACES=224, PETRI_TRANSITIONS=513} [2024-06-28 01:42:17,279 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-28 01:42:17,279 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 513 transitions, 8607 flow [2024-06-28 01:42:17,280 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 01:42:17,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:17,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:17,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:42:17,280 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:17,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:17,280 INFO L85 PathProgramCache]: Analyzing trace with hash 544224702, now seen corresponding path program 2 times [2024-06-28 01:42:17,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:17,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465282447] [2024-06-28 01:42:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:17,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:18,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:18,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465282447] [2024-06-28 01:42:18,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465282447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:18,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:18,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:18,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986004430] [2024-06-28 01:42:18,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:18,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:18,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:18,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:18,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 513 transitions, 8607 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 01:42:18,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:18,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:18,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:20,545 INFO L124 PetriNetUnfolderBase]: 7582/11529 cut-off events. [2024-06-28 01:42:20,545 INFO L125 PetriNetUnfolderBase]: For 316302/316320 co-relation queries the response was YES. [2024-06-28 01:42:20,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85408 conditions, 11529 events. 7582/11529 cut-off events. For 316302/316320 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 68911 event pairs, 2429 based on Foata normal form. 16/11332 useless extension candidates. Maximal degree in co-relation 85306. Up to 10632 conditions per place. [2024-06-28 01:42:20,690 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 508 selfloop transitions, 64 changer transitions 0/579 dead transitions. [2024-06-28 01:42:20,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 579 transitions, 10424 flow [2024-06-28 01:42:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 01:42:20,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543478260869565 [2024-06-28 01:42:20,692 INFO L175 Difference]: Start difference. First operand has 224 places, 513 transitions, 8607 flow. Second operand 10 states and 209 transitions. [2024-06-28 01:42:20,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 579 transitions, 10424 flow [2024-06-28 01:42:21,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 579 transitions, 9916 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:21,683 INFO L231 Difference]: Finished difference. Result has 230 places, 528 transitions, 8575 flow [2024-06-28 01:42:21,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8115, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8575, PETRI_PLACES=230, PETRI_TRANSITIONS=528} [2024-06-28 01:42:21,684 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 178 predicate places. [2024-06-28 01:42:21,684 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 528 transitions, 8575 flow [2024-06-28 01:42:21,684 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 01:42:21,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:21,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:21,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:42:21,685 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:21,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:21,685 INFO L85 PathProgramCache]: Analyzing trace with hash 544216983, now seen corresponding path program 3 times [2024-06-28 01:42:21,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:21,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872680416] [2024-06-28 01:42:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:22,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:22,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:22,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872680416] [2024-06-28 01:42:22,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872680416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:22,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:22,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:22,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116738092] [2024-06-28 01:42:22,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:22,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:22,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:22,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:22,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 528 transitions, 8575 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 01:42:22,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:22,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:22,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:25,015 INFO L124 PetriNetUnfolderBase]: 7625/11623 cut-off events. [2024-06-28 01:42:25,016 INFO L125 PetriNetUnfolderBase]: For 319868/319880 co-relation queries the response was YES. [2024-06-28 01:42:25,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85866 conditions, 11623 events. 7625/11623 cut-off events. For 319868/319880 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 69745 event pairs, 1718 based on Foata normal form. 16/11406 useless extension candidates. Maximal degree in co-relation 85761. Up to 9620 conditions per place. [2024-06-28 01:42:25,163 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 370 selfloop transitions, 223 changer transitions 0/600 dead transitions. [2024-06-28 01:42:25,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 600 transitions, 10666 flow [2024-06-28 01:42:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:42:25,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-06-28 01:42:25,179 INFO L175 Difference]: Start difference. First operand has 230 places, 528 transitions, 8575 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:42:25,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 600 transitions, 10666 flow [2024-06-28 01:42:26,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 600 transitions, 10418 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:26,264 INFO L231 Difference]: Finished difference. Result has 232 places, 548 transitions, 9368 flow [2024-06-28 01:42:26,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8329, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9368, PETRI_PLACES=232, PETRI_TRANSITIONS=548} [2024-06-28 01:42:26,266 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-28 01:42:26,266 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 548 transitions, 9368 flow [2024-06-28 01:42:26,266 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 01:42:26,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:26,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:26,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:42:26,267 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:26,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:26,267 INFO L85 PathProgramCache]: Analyzing trace with hash -461620846, now seen corresponding path program 2 times [2024-06-28 01:42:26,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:26,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184447796] [2024-06-28 01:42:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:26,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:26,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184447796] [2024-06-28 01:42:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184447796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:26,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:26,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:42:26,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449823167] [2024-06-28 01:42:26,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:26,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:42:26,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:42:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:42:26,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:26,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 548 transitions, 9368 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 01:42:26,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:26,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:26,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:29,177 INFO L124 PetriNetUnfolderBase]: 7659/11691 cut-off events. [2024-06-28 01:42:29,178 INFO L125 PetriNetUnfolderBase]: For 335854/335866 co-relation queries the response was YES. [2024-06-28 01:42:29,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88298 conditions, 11691 events. 7659/11691 cut-off events. For 335854/335866 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 70454 event pairs, 2434 based on Foata normal form. 13/11472 useless extension candidates. Maximal degree in co-relation 88190. Up to 10817 conditions per place. [2024-06-28 01:42:29,309 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 528 selfloop transitions, 49 changer transitions 0/584 dead transitions. [2024-06-28 01:42:29,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 584 transitions, 10916 flow [2024-06-28 01:42:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:42:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:42:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:42:29,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:42:29,314 INFO L175 Difference]: Start difference. First operand has 232 places, 548 transitions, 9368 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:42:29,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 584 transitions, 10916 flow [2024-06-28 01:42:30,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 584 transitions, 10580 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:30,196 INFO L231 Difference]: Finished difference. Result has 234 places, 554 transitions, 9214 flow [2024-06-28 01:42:30,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9032, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9214, PETRI_PLACES=234, PETRI_TRANSITIONS=554} [2024-06-28 01:42:30,197 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 182 predicate places. [2024-06-28 01:42:30,197 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 554 transitions, 9214 flow [2024-06-28 01:42:30,198 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 01:42:30,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:30,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:30,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:42:30,198 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:30,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash 152835141, now seen corresponding path program 4 times [2024-06-28 01:42:30,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:30,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389478657] [2024-06-28 01:42:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:30,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:30,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:30,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389478657] [2024-06-28 01:42:30,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389478657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:30,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:30,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:30,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502902120] [2024-06-28 01:42:30,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:30,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:30,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:30,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:30,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:31,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:31,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 554 transitions, 9214 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 01:42:31,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:31,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:31,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:33,478 INFO L124 PetriNetUnfolderBase]: 7691/11707 cut-off events. [2024-06-28 01:42:33,479 INFO L125 PetriNetUnfolderBase]: For 329383/329407 co-relation queries the response was YES. [2024-06-28 01:42:33,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86971 conditions, 11707 events. 7691/11707 cut-off events. For 329383/329407 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 70471 event pairs, 1573 based on Foata normal form. 20/11483 useless extension candidates. Maximal degree in co-relation 86862. Up to 9312 conditions per place. [2024-06-28 01:42:33,611 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 336 selfloop transitions, 280 changer transitions 0/623 dead transitions. [2024-06-28 01:42:33,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 623 transitions, 11191 flow [2024-06-28 01:42:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:42:33,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-28 01:42:33,613 INFO L175 Difference]: Start difference. First operand has 234 places, 554 transitions, 9214 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:42:33,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 623 transitions, 11191 flow [2024-06-28 01:42:34,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 623 transitions, 11023 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:34,529 INFO L231 Difference]: Finished difference. Result has 242 places, 572 transitions, 10111 flow [2024-06-28 01:42:34,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9084, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10111, PETRI_PLACES=242, PETRI_TRANSITIONS=572} [2024-06-28 01:42:34,530 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 190 predicate places. [2024-06-28 01:42:34,530 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 572 transitions, 10111 flow [2024-06-28 01:42:34,530 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 01:42:34,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:34,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:34,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:42:34,531 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:34,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash 152842860, now seen corresponding path program 3 times [2024-06-28 01:42:34,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:34,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926851821] [2024-06-28 01:42:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:34,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:35,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:35,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926851821] [2024-06-28 01:42:35,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926851821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:35,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:35,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:35,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650996741] [2024-06-28 01:42:35,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:35,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:35,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:35,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:35,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 572 transitions, 10111 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 01:42:35,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:35,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:35,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:38,129 INFO L124 PetriNetUnfolderBase]: 7733/11747 cut-off events. [2024-06-28 01:42:38,129 INFO L125 PetriNetUnfolderBase]: For 350294/350327 co-relation queries the response was YES. [2024-06-28 01:42:38,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90683 conditions, 11747 events. 7733/11747 cut-off events. For 350294/350327 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 70631 event pairs, 2311 based on Foata normal form. 26/11555 useless extension candidates. Maximal degree in co-relation 90571. Up to 10758 conditions per place. [2024-06-28 01:42:38,289 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 534 selfloop transitions, 92 changer transitions 0/633 dead transitions. [2024-06-28 01:42:38,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 633 transitions, 11983 flow [2024-06-28 01:42:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-28 01:42:38,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830917874396135 [2024-06-28 01:42:38,290 INFO L175 Difference]: Start difference. First operand has 242 places, 572 transitions, 10111 flow. Second operand 9 states and 200 transitions. [2024-06-28 01:42:38,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 633 transitions, 11983 flow [2024-06-28 01:42:39,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 633 transitions, 11646 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:39,331 INFO L231 Difference]: Finished difference. Result has 248 places, 575 transitions, 10082 flow [2024-06-28 01:42:39,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9783, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10082, PETRI_PLACES=248, PETRI_TRANSITIONS=575} [2024-06-28 01:42:39,332 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 196 predicate places. [2024-06-28 01:42:39,332 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 575 transitions, 10082 flow [2024-06-28 01:42:39,332 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 01:42:39,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:39,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:39,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:42:39,333 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:39,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash 744978776, now seen corresponding path program 4 times [2024-06-28 01:42:39,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:39,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783800290] [2024-06-28 01:42:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:39,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:40,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:40,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783800290] [2024-06-28 01:42:40,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783800290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:40,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:40,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:40,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029010248] [2024-06-28 01:42:40,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:40,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:40,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:40,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:40,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:40,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 575 transitions, 10082 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 01:42:40,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:40,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:40,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:42,870 INFO L124 PetriNetUnfolderBase]: 7770/11823 cut-off events. [2024-06-28 01:42:42,870 INFO L125 PetriNetUnfolderBase]: For 363494/363518 co-relation queries the response was YES. [2024-06-28 01:42:42,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91262 conditions, 11823 events. 7770/11823 cut-off events. For 363494/363518 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 71154 event pairs, 1591 based on Foata normal form. 20/11599 useless extension candidates. Maximal degree in co-relation 91149. Up to 9535 conditions per place. [2024-06-28 01:42:43,040 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 325 selfloop transitions, 305 changer transitions 0/637 dead transitions. [2024-06-28 01:42:43,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 637 transitions, 12085 flow [2024-06-28 01:42:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-06-28 01:42:43,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48043478260869565 [2024-06-28 01:42:43,043 INFO L175 Difference]: Start difference. First operand has 248 places, 575 transitions, 10082 flow. Second operand 10 states and 221 transitions. [2024-06-28 01:42:43,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 637 transitions, 12085 flow [2024-06-28 01:42:44,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 637 transitions, 11812 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:44,092 INFO L231 Difference]: Finished difference. Result has 252 places, 585 transitions, 10767 flow [2024-06-28 01:42:44,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9809, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10767, PETRI_PLACES=252, PETRI_TRANSITIONS=585} [2024-06-28 01:42:44,094 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-28 01:42:44,094 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 585 transitions, 10767 flow [2024-06-28 01:42:44,094 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 01:42:44,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:44,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:44,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:42:44,095 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:44,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash 162366060, now seen corresponding path program 5 times [2024-06-28 01:42:44,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:44,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303500490] [2024-06-28 01:42:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:44,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:44,927 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 01:42:44,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303500490] [2024-06-28 01:42:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303500490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:44,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:44,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:44,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986921923] [2024-06-28 01:42:44,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:44,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:44,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:44,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:44,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:45,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:45,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 585 transitions, 10767 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 01:42:45,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:45,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:45,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:47,691 INFO L124 PetriNetUnfolderBase]: 7994/12160 cut-off events. [2024-06-28 01:42:47,692 INFO L125 PetriNetUnfolderBase]: For 412710/412734 co-relation queries the response was YES. [2024-06-28 01:42:47,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97343 conditions, 12160 events. 7994/12160 cut-off events. For 412710/412734 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 73635 event pairs, 1447 based on Foata normal form. 20/11937 useless extension candidates. Maximal degree in co-relation 97228. Up to 9201 conditions per place. [2024-06-28 01:42:47,841 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 332 selfloop transitions, 321 changer transitions 0/660 dead transitions. [2024-06-28 01:42:47,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 660 transitions, 13053 flow [2024-06-28 01:42:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:47,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:42:47,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2024-06-28 01:42:47,843 INFO L175 Difference]: Start difference. First operand has 252 places, 585 transitions, 10767 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:42:47,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 660 transitions, 13053 flow [2024-06-28 01:42:49,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 660 transitions, 12595 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:49,416 INFO L231 Difference]: Finished difference. Result has 259 places, 602 transitions, 11330 flow [2024-06-28 01:42:49,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10309, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11330, PETRI_PLACES=259, PETRI_TRANSITIONS=602} [2024-06-28 01:42:49,416 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 207 predicate places. [2024-06-28 01:42:49,417 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 602 transitions, 11330 flow [2024-06-28 01:42:49,417 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 01:42:49,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:49,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:49,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:42:49,417 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:49,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:49,418 INFO L85 PathProgramCache]: Analyzing trace with hash -103657650, now seen corresponding path program 6 times [2024-06-28 01:42:49,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:49,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967720711] [2024-06-28 01:42:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:49,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:50,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967720711] [2024-06-28 01:42:50,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967720711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:50,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:50,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:50,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78196204] [2024-06-28 01:42:50,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:50,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:50,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:50,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:50,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:42:50,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 602 transitions, 11330 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 01:42:50,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:50,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:42:50,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:53,213 INFO L124 PetriNetUnfolderBase]: 7999/12088 cut-off events. [2024-06-28 01:42:53,213 INFO L125 PetriNetUnfolderBase]: For 443836/443869 co-relation queries the response was YES. [2024-06-28 01:42:53,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98896 conditions, 12088 events. 7999/12088 cut-off events. For 443836/443869 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 72629 event pairs, 2413 based on Foata normal form. 26/11916 useless extension candidates. Maximal degree in co-relation 98778. Up to 11159 conditions per place. [2024-06-28 01:42:53,370 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 570 selfloop transitions, 88 changer transitions 0/665 dead transitions. [2024-06-28 01:42:53,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 665 transitions, 13387 flow [2024-06-28 01:42:53,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 01:42:53,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-28 01:42:53,373 INFO L175 Difference]: Start difference. First operand has 259 places, 602 transitions, 11330 flow. Second operand 9 states and 201 transitions. [2024-06-28 01:42:53,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 665 transitions, 13387 flow [2024-06-28 01:42:55,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 665 transitions, 12899 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:55,380 INFO L231 Difference]: Finished difference. Result has 263 places, 607 transitions, 11255 flow [2024-06-28 01:42:55,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10859, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11255, PETRI_PLACES=263, PETRI_TRANSITIONS=607} [2024-06-28 01:42:55,381 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 211 predicate places. [2024-06-28 01:42:55,381 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 607 transitions, 11255 flow [2024-06-28 01:42:55,381 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 01:42:55,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:55,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:55,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:42:55,382 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:55,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:55,382 INFO L85 PathProgramCache]: Analyzing trace with hash -103873131, now seen corresponding path program 10 times [2024-06-28 01:42:55,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:55,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528780557] [2024-06-28 01:42:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:55,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:56,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:56,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528780557] [2024-06-28 01:42:56,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528780557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:56,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:56,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:56,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949579004] [2024-06-28 01:42:56,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:56,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:56,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:56,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:56,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:56,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:42:56,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 607 transitions, 11255 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:56,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:56,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:42:56,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:59,107 INFO L124 PetriNetUnfolderBase]: 7467/11529 cut-off events. [2024-06-28 01:42:59,108 INFO L125 PetriNetUnfolderBase]: For 476295/476369 co-relation queries the response was YES. [2024-06-28 01:42:59,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96203 conditions, 11529 events. 7467/11529 cut-off events. For 476295/476369 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 72111 event pairs, 1495 based on Foata normal form. 46/11271 useless extension candidates. Maximal degree in co-relation 96083. Up to 9040 conditions per place. [2024-06-28 01:42:59,262 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 347 selfloop transitions, 284 changer transitions 0/657 dead transitions. [2024-06-28 01:42:59,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 657 transitions, 13115 flow [2024-06-28 01:42:59,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:42:59,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-28 01:42:59,263 INFO L175 Difference]: Start difference. First operand has 263 places, 607 transitions, 11255 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:42:59,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 657 transitions, 13115 flow [2024-06-28 01:43:00,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 657 transitions, 12656 flow, removed 101 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:00,874 INFO L231 Difference]: Finished difference. Result has 263 places, 610 transitions, 11506 flow [2024-06-28 01:43:00,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10796, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11506, PETRI_PLACES=263, PETRI_TRANSITIONS=610} [2024-06-28 01:43:00,875 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 211 predicate places. [2024-06-28 01:43:00,875 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 610 transitions, 11506 flow [2024-06-28 01:43:00,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:00,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:00,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:00,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:43:00,876 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:00,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:00,876 INFO L85 PathProgramCache]: Analyzing trace with hash -449240686, now seen corresponding path program 3 times [2024-06-28 01:43:00,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:00,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553611393] [2024-06-28 01:43:00,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:00,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:01,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553611393] [2024-06-28 01:43:01,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553611393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:01,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:01,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275195729] [2024-06-28 01:43:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:01,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:43:01,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 610 transitions, 11506 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 01:43:01,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:01,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:43:01,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:03,991 INFO L124 PetriNetUnfolderBase]: 8144/12415 cut-off events. [2024-06-28 01:43:03,991 INFO L125 PetriNetUnfolderBase]: For 482946/482979 co-relation queries the response was YES. [2024-06-28 01:43:04,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102350 conditions, 12415 events. 8144/12415 cut-off events. For 482946/482979 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 75333 event pairs, 2625 based on Foata normal form. 23/12203 useless extension candidates. Maximal degree in co-relation 102230. Up to 11545 conditions per place. [2024-06-28 01:43:04,236 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 576 selfloop transitions, 48 changer transitions 0/631 dead transitions. [2024-06-28 01:43:04,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 631 transitions, 12946 flow [2024-06-28 01:43:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 01:43:04,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-28 01:43:04,238 INFO L175 Difference]: Start difference. First operand has 263 places, 610 transitions, 11506 flow. Second operand 6 states and 128 transitions. [2024-06-28 01:43:04,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 631 transitions, 12946 flow [2024-06-28 01:43:06,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 631 transitions, 12468 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:06,274 INFO L231 Difference]: Finished difference. Result has 264 places, 610 transitions, 11133 flow [2024-06-28 01:43:06,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11028, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11133, PETRI_PLACES=264, PETRI_TRANSITIONS=610} [2024-06-28 01:43:06,275 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 212 predicate places. [2024-06-28 01:43:06,275 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 610 transitions, 11133 flow [2024-06-28 01:43:06,275 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 01:43:06,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:06,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:06,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:43:06,276 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:06,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:06,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2111926111, now seen corresponding path program 1 times [2024-06-28 01:43:06,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:06,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114149564] [2024-06-28 01:43:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:06,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:06,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:06,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114149564] [2024-06-28 01:43:06,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114149564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:06,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:06,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:06,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311176285] [2024-06-28 01:43:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:06,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:06,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:06,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 610 transitions, 11133 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:06,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:06,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:06,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:09,580 INFO L124 PetriNetUnfolderBase]: 7950/12229 cut-off events. [2024-06-28 01:43:09,580 INFO L125 PetriNetUnfolderBase]: For 451762/451763 co-relation queries the response was YES. [2024-06-28 01:43:09,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98235 conditions, 12229 events. 7950/12229 cut-off events. For 451762/451763 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 76107 event pairs, 2736 based on Foata normal form. 2/11951 useless extension candidates. Maximal degree in co-relation 98114. Up to 11242 conditions per place. [2024-06-28 01:43:09,758 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 611 selfloop transitions, 24 changer transitions 0/649 dead transitions. [2024-06-28 01:43:09,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 649 transitions, 12856 flow [2024-06-28 01:43:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:09,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:43:09,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-06-28 01:43:09,759 INFO L175 Difference]: Start difference. First operand has 264 places, 610 transitions, 11133 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:43:09,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 649 transitions, 12856 flow [2024-06-28 01:43:11,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 649 transitions, 12742 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:11,782 INFO L231 Difference]: Finished difference. Result has 267 places, 622 transitions, 11242 flow [2024-06-28 01:43:11,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11021, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11242, PETRI_PLACES=267, PETRI_TRANSITIONS=622} [2024-06-28 01:43:11,783 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 215 predicate places. [2024-06-28 01:43:11,783 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 622 transitions, 11242 flow [2024-06-28 01:43:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:11,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:11,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:11,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:43:11,783 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:11,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1916887385, now seen corresponding path program 1 times [2024-06-28 01:43:11,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:11,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705449926] [2024-06-28 01:43:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:11,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:12,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:12,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705449926] [2024-06-28 01:43:12,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705449926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:12,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:12,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:12,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173876741] [2024-06-28 01:43:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:12,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:12,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:12,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:43:12,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 622 transitions, 11242 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 01:43:12,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:12,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:43:12,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:15,820 INFO L124 PetriNetUnfolderBase]: 8283/12615 cut-off events. [2024-06-28 01:43:15,820 INFO L125 PetriNetUnfolderBase]: For 484892/484904 co-relation queries the response was YES. [2024-06-28 01:43:15,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103175 conditions, 12615 events. 8283/12615 cut-off events. For 484892/484904 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 76619 event pairs, 2618 based on Foata normal form. 14/12394 useless extension candidates. Maximal degree in co-relation 103052. Up to 11621 conditions per place. [2024-06-28 01:43:16,053 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 601 selfloop transitions, 59 changer transitions 0/667 dead transitions. [2024-06-28 01:43:16,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 667 transitions, 13136 flow [2024-06-28 01:43:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:43:16,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:43:16,061 INFO L175 Difference]: Start difference. First operand has 267 places, 622 transitions, 11242 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:43:16,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 667 transitions, 13136 flow [2024-06-28 01:43:17,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 667 transitions, 13074 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-28 01:43:17,517 INFO L231 Difference]: Finished difference. Result has 273 places, 628 transitions, 11424 flow [2024-06-28 01:43:17,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11180, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11424, PETRI_PLACES=273, PETRI_TRANSITIONS=628} [2024-06-28 01:43:17,518 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 221 predicate places. [2024-06-28 01:43:17,518 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 628 transitions, 11424 flow [2024-06-28 01:43:17,518 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 01:43:17,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:17,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:17,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:43:17,519 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:17,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash 381040467, now seen corresponding path program 2 times [2024-06-28 01:43:17,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:17,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551414524] [2024-06-28 01:43:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:17,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:17,985 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 01:43:17,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:17,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551414524] [2024-06-28 01:43:17,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551414524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:17,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:17,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:17,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586094825] [2024-06-28 01:43:17,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:17,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:17,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:18,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:43:18,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 628 transitions, 11424 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:18,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:18,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:43:18,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:20,999 INFO L124 PetriNetUnfolderBase]: 7964/12254 cut-off events. [2024-06-28 01:43:21,000 INFO L125 PetriNetUnfolderBase]: For 475645/475645 co-relation queries the response was YES. [2024-06-28 01:43:21,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101235 conditions, 12254 events. 7964/12254 cut-off events. For 475645/475645 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 76296 event pairs, 2796 based on Foata normal form. 3/11980 useless extension candidates. Maximal degree in co-relation 101109. Up to 11308 conditions per place. [2024-06-28 01:43:21,275 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 616 selfloop transitions, 16 changer transitions 0/646 dead transitions. [2024-06-28 01:43:21,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 646 transitions, 12828 flow [2024-06-28 01:43:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:21,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 01:43:21,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-28 01:43:21,281 INFO L175 Difference]: Start difference. First operand has 273 places, 628 transitions, 11424 flow. Second operand 6 states and 128 transitions. [2024-06-28 01:43:21,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 646 transitions, 12828 flow [2024-06-28 01:43:22,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 646 transitions, 12741 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:22,994 INFO L231 Difference]: Finished difference. Result has 276 places, 628 transitions, 11376 flow [2024-06-28 01:43:22,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11337, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11376, PETRI_PLACES=276, PETRI_TRANSITIONS=628} [2024-06-28 01:43:22,995 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 224 predicate places. [2024-06-28 01:43:22,995 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 628 transitions, 11376 flow [2024-06-28 01:43:22,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:22,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:22,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:22,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:43:22,995 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:22,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash 63605634, now seen corresponding path program 1 times [2024-06-28 01:43:22,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:22,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443146637] [2024-06-28 01:43:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:22,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:23,708 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 01:43:23,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443146637] [2024-06-28 01:43:23,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443146637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:23,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:23,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:23,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241955813] [2024-06-28 01:43:23,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:23,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:23,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:23,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:43:23,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 628 transitions, 11376 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 01:43:23,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:23,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:43:23,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:27,166 INFO L124 PetriNetUnfolderBase]: 8433/12751 cut-off events. [2024-06-28 01:43:27,167 INFO L125 PetriNetUnfolderBase]: For 527199/527211 co-relation queries the response was YES. [2024-06-28 01:43:27,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106199 conditions, 12751 events. 8433/12751 cut-off events. For 527199/527211 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 77016 event pairs, 2093 based on Foata normal form. 32/12571 useless extension candidates. Maximal degree in co-relation 106071. Up to 10944 conditions per place. [2024-06-28 01:43:27,354 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 495 selfloop transitions, 189 changer transitions 0/691 dead transitions. [2024-06-28 01:43:27,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 691 transitions, 13264 flow [2024-06-28 01:43:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-06-28 01:43:27,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043478260869565 [2024-06-28 01:43:27,355 INFO L175 Difference]: Start difference. First operand has 276 places, 628 transitions, 11376 flow. Second operand 10 states and 232 transitions. [2024-06-28 01:43:27,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 691 transitions, 13264 flow [2024-06-28 01:43:29,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 691 transitions, 13215 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:29,417 INFO L231 Difference]: Finished difference. Result has 282 places, 631 transitions, 11853 flow [2024-06-28 01:43:29,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11327, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11853, PETRI_PLACES=282, PETRI_TRANSITIONS=631} [2024-06-28 01:43:29,420 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 230 predicate places. [2024-06-28 01:43:29,420 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 631 transitions, 11853 flow [2024-06-28 01:43:29,420 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 01:43:29,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:29,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:29,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:43:29,420 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:29,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 108153954, now seen corresponding path program 1 times [2024-06-28 01:43:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062933311] [2024-06-28 01:43:29,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:29,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:29,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:29,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062933311] [2024-06-28 01:43:29,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062933311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:29,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:29,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:29,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738989325] [2024-06-28 01:43:29,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:29,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:29,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:29,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:30,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:43:30,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 631 transitions, 11853 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 01:43:30,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:30,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:43:30,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:33,238 INFO L124 PetriNetUnfolderBase]: 8523/12979 cut-off events. [2024-06-28 01:43:33,238 INFO L125 PetriNetUnfolderBase]: For 539420/539444 co-relation queries the response was YES. [2024-06-28 01:43:33,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108702 conditions, 12979 events. 8523/12979 cut-off events. For 539420/539444 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 79104 event pairs, 2186 based on Foata normal form. 26/12763 useless extension candidates. Maximal degree in co-relation 108573. Up to 11863 conditions per place. [2024-06-28 01:43:33,420 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 603 selfloop transitions, 114 changer transitions 0/724 dead transitions. [2024-06-28 01:43:33,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 724 transitions, 14594 flow [2024-06-28 01:43:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:43:33,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-28 01:43:33,421 INFO L175 Difference]: Start difference. First operand has 282 places, 631 transitions, 11853 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:43:33,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 724 transitions, 14594 flow [2024-06-28 01:43:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 724 transitions, 14201 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:35,569 INFO L231 Difference]: Finished difference. Result has 287 places, 682 transitions, 12760 flow [2024-06-28 01:43:35,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11488, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12760, PETRI_PLACES=287, PETRI_TRANSITIONS=682} [2024-06-28 01:43:35,570 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 235 predicate places. [2024-06-28 01:43:35,570 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 682 transitions, 12760 flow [2024-06-28 01:43:35,570 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 01:43:35,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:35,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:35,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:43:35,571 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:35,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -809622542, now seen corresponding path program 2 times [2024-06-28 01:43:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980330802] [2024-06-28 01:43:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:36,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:36,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980330802] [2024-06-28 01:43:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980330802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:36,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:36,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:36,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177844047] [2024-06-28 01:43:36,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:36,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:36,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:36,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:36,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:43:36,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 682 transitions, 12760 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 01:43:36,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:36,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:43:36,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:40,157 INFO L124 PetriNetUnfolderBase]: 8884/13515 cut-off events. [2024-06-28 01:43:40,157 INFO L125 PetriNetUnfolderBase]: For 592722/592734 co-relation queries the response was YES. [2024-06-28 01:43:40,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115640 conditions, 13515 events. 8884/13515 cut-off events. For 592722/592734 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 82789 event pairs, 2134 based on Foata normal form. 28/13298 useless extension candidates. Maximal degree in co-relation 115506. Up to 10854 conditions per place. [2024-06-28 01:43:40,543 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 554 selfloop transitions, 205 changer transitions 0/766 dead transitions. [2024-06-28 01:43:40,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 766 transitions, 15233 flow [2024-06-28 01:43:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:40,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:40,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-28 01:43:40,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-06-28 01:43:40,545 INFO L175 Difference]: Start difference. First operand has 287 places, 682 transitions, 12760 flow. Second operand 10 states and 236 transitions. [2024-06-28 01:43:40,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 766 transitions, 15233 flow [2024-06-28 01:43:43,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 766 transitions, 15061 flow, removed 85 selfloop flow, removed 1 redundant places. [2024-06-28 01:43:43,107 INFO L231 Difference]: Finished difference. Result has 297 places, 696 transitions, 13362 flow [2024-06-28 01:43:43,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12588, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13362, PETRI_PLACES=297, PETRI_TRANSITIONS=696} [2024-06-28 01:43:43,117 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 245 predicate places. [2024-06-28 01:43:43,117 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 696 transitions, 13362 flow [2024-06-28 01:43:43,118 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 01:43:43,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:43,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:43,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:43:43,118 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:43,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:43,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1265529826, now seen corresponding path program 2 times [2024-06-28 01:43:43,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:43,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28451888] [2024-06-28 01:43:43,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:43,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:43,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28451888] [2024-06-28 01:43:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28451888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:43,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:43,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:43,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584781974] [2024-06-28 01:43:43,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:43,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:43,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:43,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:43:43,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 696 transitions, 13362 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 01:43:43,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:43,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:43:43,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:47,481 INFO L124 PetriNetUnfolderBase]: 9040/13729 cut-off events. [2024-06-28 01:43:47,481 INFO L125 PetriNetUnfolderBase]: For 621537/621555 co-relation queries the response was YES. [2024-06-28 01:43:47,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119081 conditions, 13729 events. 9040/13729 cut-off events. For 621537/621555 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 83973 event pairs, 2464 based on Foata normal form. 20/13507 useless extension candidates. Maximal degree in co-relation 118943. Up to 12555 conditions per place. [2024-06-28 01:43:47,681 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 629 selfloop transitions, 141 changer transitions 0/777 dead transitions. [2024-06-28 01:43:47,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 777 transitions, 15995 flow [2024-06-28 01:43:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:43:47,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-28 01:43:47,692 INFO L175 Difference]: Start difference. First operand has 297 places, 696 transitions, 13362 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:43:47,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 777 transitions, 15995 flow [2024-06-28 01:43:50,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 777 transitions, 15770 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:50,423 INFO L231 Difference]: Finished difference. Result has 301 places, 728 transitions, 13944 flow [2024-06-28 01:43:50,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13137, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13944, PETRI_PLACES=301, PETRI_TRANSITIONS=728} [2024-06-28 01:43:50,424 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 249 predicate places. [2024-06-28 01:43:50,424 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 728 transitions, 13944 flow [2024-06-28 01:43:50,424 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 01:43:50,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:50,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:50,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:43:50,425 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:50,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1829830576, now seen corresponding path program 3 times [2024-06-28 01:43:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310906367] [2024-06-28 01:43:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310906367] [2024-06-28 01:43:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310906367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:50,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:50,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:50,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50985824] [2024-06-28 01:43:50,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:50,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:50,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:50,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:50,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:43:50,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 728 transitions, 13944 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 01:43:50,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:50,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:43:50,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand