./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix050.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix050.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/mix050.i ./goblint.2024-06-19_11-23-25.files/protection/mix050.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 [2024-06-27 18:36:32,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:36:32,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:36:32,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:36:32,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:36:32,564 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:36:32,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:36:32,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:36:32,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:36:32,570 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:36:32,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:36:32,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:36:32,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:36:32,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:36:32,580 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:36:32,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:36:32,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:36:32,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:36:32,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:36:32,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:36:32,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:36:32,583 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:36:32,583 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:36:32,583 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:36:32,583 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:36:32,584 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:36:32,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:36:32,584 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:36:32,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:36:32,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:36:32,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:36:32,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:36:32,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:36:32,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:36:32,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:36:32,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:36:32,587 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:36:32,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:36:32,587 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:36:32,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:36:32,587 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:36:32,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:36:32,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:36:32,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:36:32,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:36:33,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:36:33,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:36:33,009 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:36:33,010 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:36:33,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix050.yml/witness.yml [2024-06-27 18:36:33,394 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:36:33,408 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:36:33,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix050.i [2024-06-27 18:36:34,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:36:34,706 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:36:34,707 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix050.i [2024-06-27 18:36:34,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5237b5dd1/bb69683e62f843ebb758611ef862d71b/FLAG9ed7b3e37 [2024-06-27 18:36:34,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5237b5dd1/bb69683e62f843ebb758611ef862d71b [2024-06-27 18:36:34,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:36:34,730 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:36:34,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:36:34,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:36:34,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:36:34,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:36:33" (1/2) ... [2024-06-27 18:36:34,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29056f48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:36:34, skipping insertion in model container [2024-06-27 18:36:34,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:36:33" (1/2) ... [2024-06-27 18:36:34,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@780d649b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:36:34, skipping insertion in model container [2024-06-27 18:36:34,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:36:34" (2/2) ... [2024-06-27 18:36:34,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29056f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:34, skipping insertion in model container [2024-06-27 18:36:34,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:36:34" (2/2) ... [2024-06-27 18:36:34,739 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:36:34,839 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:36:34,840 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] ((((((((((((((((((((((! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 18:36:34,840 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((((! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 18:36:34,840 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 18:36:34,840 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] ((((((((((((((((((((((! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-27 18:36:34,841 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:36:34,841 INFO L106 edCorrectnessWitness]: ghost_update [L864-L864] multithreaded = 1; [2024-06-27 18:36:34,878 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:36:35,036 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/mix050.i[940,953] [2024-06-27 18:36:35,173 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:36:35,183 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:36:35,226 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/mix050.i[940,953] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:36:35,312 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:36:35,346 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:36:35,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35 WrapperNode [2024-06-27 18:36:35,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:36:35,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:36:35,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:36:35,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:36:35,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,401 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-27 18:36:35,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:36:35,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:36:35,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:36:35,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:36:35,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,432 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:36:35,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:36:35,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:36:35,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:36:35,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:36:35,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (1/1) ... [2024-06-27 18:36:35,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:36:35,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:36:35,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:36:35,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:36:35,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:36:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:36:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:36:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:36:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:36:35,560 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:36:35,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:36:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:36:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:36:35,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:36:35,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:36:35,565 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:36:35,666 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:36:35,668 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:36:35,997 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:36:35,998 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:36:36,156 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:36:36,156 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:36:36,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:36:36 BoogieIcfgContainer [2024-06-27 18:36:36,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:36:36,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:36:36,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:36:36,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:36:36,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:36:33" (1/4) ... [2024-06-27 18:36:36,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24674fc2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:36:36, skipping insertion in model container [2024-06-27 18:36:36,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:36:34" (2/4) ... [2024-06-27 18:36:36,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24674fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:36:36, skipping insertion in model container [2024-06-27 18:36:36,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:36:35" (3/4) ... [2024-06-27 18:36:36,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24674fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:36:36, skipping insertion in model container [2024-06-27 18:36:36,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:36:36" (4/4) ... [2024-06-27 18:36:36,165 INFO L112 eAbstractionObserver]: Analyzing ICFG mix050.i [2024-06-27 18:36:36,177 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:36:36,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:36:36,178 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:36:36,220 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:36:36,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 18:36:36,264 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-27 18:36:36,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:36:36,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-06-27 18:36:36,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 18:36:36,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 53 transitions, 118 flow [2024-06-27 18:36:36,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:36:36,303 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;@6d644102, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:36:36,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:36:36,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:36:36,306 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:36:36,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:36:36,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:36,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:36:36,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:36:36,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash 384187038, now seen corresponding path program 1 times [2024-06-27 18:36:36,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:36,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681404427] [2024-06-27 18:36:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:36,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:37,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:37,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:37,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681404427] [2024-06-27 18:36:37,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681404427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:37,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:37,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:36:37,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726711370] [2024-06-27 18:36:37,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:37,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:36:37,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:36:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:36:37,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-06-27 18:36:37,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:37,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:37,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-06-27 18:36:37,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:40,470 INFO L124 PetriNetUnfolderBase]: 21343/32173 cut-off events. [2024-06-27 18:36:40,471 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-27 18:36:40,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60937 conditions, 32173 events. 21343/32173 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 230017 event pairs, 17311 based on Foata normal form. 901/30814 useless extension candidates. Maximal degree in co-relation 60924. Up to 28369 conditions per place. [2024-06-27 18:36:40,651 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 51 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-06-27 18:36:40,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 277 flow [2024-06-27 18:36:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:36:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:36:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-06-27 18:36:40,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-06-27 18:36:40,662 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 118 flow. Second operand 3 states and 117 transitions. [2024-06-27 18:36:40,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 277 flow [2024-06-27 18:36:40,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:36:40,670 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 158 flow [2024-06-27 18:36:40,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-27 18:36:40,674 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-06-27 18:36:40,674 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 158 flow [2024-06-27 18:36:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:40,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:40,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:36:40,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:36:40,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:36:40,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash 384187799, now seen corresponding path program 1 times [2024-06-27 18:36:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:40,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882634520] [2024-06-27 18:36:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:40,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:40,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:40,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882634520] [2024-06-27 18:36:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882634520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:40,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:40,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:36:40,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385924915] [2024-06-27 18:36:40,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:40,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:36:40,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:36:40,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:36:40,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 57 [2024-06-27 18:36:40,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:40,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:40,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 57 [2024-06-27 18:36:40,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:41,808 INFO L124 PetriNetUnfolderBase]: 5154/8531 cut-off events. [2024-06-27 18:36:41,808 INFO L125 PetriNetUnfolderBase]: For 682/682 co-relation queries the response was YES. [2024-06-27 18:36:41,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16736 conditions, 8531 events. 5154/8531 cut-off events. For 682/682 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 63680 event pairs, 2829 based on Foata normal form. 0/7948 useless extension candidates. Maximal degree in co-relation 16724. Up to 5965 conditions per place. [2024-06-27 18:36:41,847 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 45 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-06-27 18:36:41,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 293 flow [2024-06-27 18:36:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:36:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:36:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-06-27 18:36:41,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2024-06-27 18:36:41,849 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 158 flow. Second operand 3 states and 135 transitions. [2024-06-27 18:36:41,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 293 flow [2024-06-27 18:36:41,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:36:41,851 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 150 flow [2024-06-27 18:36:41,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-06-27 18:36:41,852 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-06-27 18:36:41,852 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 150 flow [2024-06-27 18:36:41,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:41,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:41,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:41,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:36:41,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:36:41,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:41,854 INFO L85 PathProgramCache]: Analyzing trace with hash -163386084, now seen corresponding path program 1 times [2024-06-27 18:36:41,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:41,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691484481] [2024-06-27 18:36:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:41,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:42,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691484481] [2024-06-27 18:36:42,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691484481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:42,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:42,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:36:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024886691] [2024-06-27 18:36:42,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:42,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:36:42,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:36:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:36:42,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-06-27 18:36:42,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:42,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:42,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-06-27 18:36:42,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:45,149 INFO L124 PetriNetUnfolderBase]: 17593/26624 cut-off events. [2024-06-27 18:36:45,149 INFO L125 PetriNetUnfolderBase]: For 6591/6591 co-relation queries the response was YES. [2024-06-27 18:36:45,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56830 conditions, 26624 events. 17593/26624 cut-off events. For 6591/6591 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 185729 event pairs, 13529 based on Foata normal form. 4/25873 useless extension candidates. Maximal degree in co-relation 56817. Up to 23421 conditions per place. [2024-06-27 18:36:45,276 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 63 selfloop transitions, 10 changer transitions 2/89 dead transitions. [2024-06-27 18:36:45,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 396 flow [2024-06-27 18:36:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:36:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:36:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-06-27 18:36:45,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2024-06-27 18:36:45,278 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 150 flow. Second operand 4 states and 147 transitions. [2024-06-27 18:36:45,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 396 flow [2024-06-27 18:36:45,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 388 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:36:45,281 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 231 flow [2024-06-27 18:36:45,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 18:36:45,282 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2024-06-27 18:36:45,282 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 231 flow [2024-06-27 18:36:45,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:45,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:45,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:45,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:36:45,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:36:45,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:45,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1899824027, now seen corresponding path program 1 times [2024-06-27 18:36:45,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:45,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669445461] [2024-06-27 18:36:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:45,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:46,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669445461] [2024-06-27 18:36:46,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669445461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:46,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:46,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:36:46,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437586431] [2024-06-27 18:36:46,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:46,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:36:46,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:46,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:36:46,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:36:46,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-27 18:36:46,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:46,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:46,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-27 18:36:46,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:48,820 INFO L124 PetriNetUnfolderBase]: 18398/28307 cut-off events. [2024-06-27 18:36:48,820 INFO L125 PetriNetUnfolderBase]: For 13013/13013 co-relation queries the response was YES. [2024-06-27 18:36:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65047 conditions, 28307 events. 18398/28307 cut-off events. For 13013/13013 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 203148 event pairs, 11992 based on Foata normal form. 4/27408 useless extension candidates. Maximal degree in co-relation 65032. Up to 24442 conditions per place. [2024-06-27 18:36:49,004 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 90 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-27 18:36:49,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 121 transitions, 620 flow [2024-06-27 18:36:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:36:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:36:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-06-27 18:36:49,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-06-27 18:36:49,008 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 231 flow. Second operand 6 states and 210 transitions. [2024-06-27 18:36:49,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 121 transitions, 620 flow [2024-06-27 18:36:49,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 121 transitions, 596 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 18:36:49,049 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 314 flow [2024-06-27 18:36:49,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-06-27 18:36:49,050 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2024-06-27 18:36:49,051 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 314 flow [2024-06-27 18:36:49,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:49,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:49,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:49,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:36:49,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:36:49,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1234995346, now seen corresponding path program 1 times [2024-06-27 18:36:49,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:49,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577946985] [2024-06-27 18:36:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577946985] [2024-06-27 18:36:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577946985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:50,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:50,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650065161] [2024-06-27 18:36:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:50,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-27 18:36:50,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:50,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:50,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-27 18:36:50,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:52,686 INFO L124 PetriNetUnfolderBase]: 18382/25384 cut-off events. [2024-06-27 18:36:52,686 INFO L125 PetriNetUnfolderBase]: For 24770/24770 co-relation queries the response was YES. [2024-06-27 18:36:52,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68443 conditions, 25384 events. 18382/25384 cut-off events. For 24770/24770 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 153350 event pairs, 8328 based on Foata normal form. 8/25236 useless extension candidates. Maximal degree in co-relation 68425. Up to 24351 conditions per place. [2024-06-27 18:36:52,859 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 98 selfloop transitions, 36 changer transitions 0/147 dead transitions. [2024-06-27 18:36:52,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 147 transitions, 842 flow [2024-06-27 18:36:52,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:52,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-06-27 18:36:52,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6040100250626567 [2024-06-27 18:36:52,861 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 314 flow. Second operand 7 states and 241 transitions. [2024-06-27 18:36:52,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 147 transitions, 842 flow [2024-06-27 18:36:52,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 147 transitions, 801 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:52,877 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 498 flow [2024-06-27 18:36:52,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=498, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-06-27 18:36:52,879 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2024-06-27 18:36:52,879 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 498 flow [2024-06-27 18:36:52,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:52,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:52,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:52,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:36:52,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:36:52,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:52,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1769309661, now seen corresponding path program 1 times [2024-06-27 18:36:52,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:52,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492316228] [2024-06-27 18:36:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:52,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:53,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:53,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492316228] [2024-06-27 18:36:53,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492316228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:53,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:53,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:36:53,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964573180] [2024-06-27 18:36:53,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:53,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:36:53,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:53,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:36:53,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:36:53,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-27 18:36:53,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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) [2024-06-27 18:36:53,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:53,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-27 18:36:53,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:57,386 INFO L124 PetriNetUnfolderBase]: 21304/32231 cut-off events. [2024-06-27 18:36:57,387 INFO L125 PetriNetUnfolderBase]: For 50590/50590 co-relation queries the response was YES. [2024-06-27 18:36:57,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89621 conditions, 32231 events. 21304/32231 cut-off events. For 50590/50590 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 228359 event pairs, 11387 based on Foata normal form. 6/31334 useless extension candidates. Maximal degree in co-relation 89598. Up to 28264 conditions per place. [2024-06-27 18:36:57,582 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 89 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2024-06-27 18:36:57,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 792 flow [2024-06-27 18:36:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:36:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:36:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-27 18:36:57,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:36:57,584 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 498 flow. Second operand 5 states and 150 transitions. [2024-06-27 18:36:57,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 792 flow [2024-06-27 18:36:57,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 727 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-06-27 18:36:57,598 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 507 flow [2024-06-27 18:36:57,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-06-27 18:36:57,601 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2024-06-27 18:36:57,601 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 507 flow [2024-06-27 18:36:57,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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) [2024-06-27 18:36:57,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:57,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:36:57,602 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:36:57,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash -507061861, now seen corresponding path program 1 times [2024-06-27 18:36:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:57,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710576999] [2024-06-27 18:36:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:57,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:58,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710576999] [2024-06-27 18:36:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710576999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074782273] [2024-06-27 18:36:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:58,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:58,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:58,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:58,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:58,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-27 18:36:58,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:58,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:58,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-27 18:36:58,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:01,705 INFO L124 PetriNetUnfolderBase]: 21434/31684 cut-off events. [2024-06-27 18:37:01,705 INFO L125 PetriNetUnfolderBase]: For 64114/64114 co-relation queries the response was YES. [2024-06-27 18:37:01,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94283 conditions, 31684 events. 21434/31684 cut-off events. For 64114/64114 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 214286 event pairs, 10132 based on Foata normal form. 6/30784 useless extension candidates. Maximal degree in co-relation 94257. Up to 28338 conditions per place. [2024-06-27 18:37:01,922 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 110 selfloop transitions, 23 changer transitions 0/144 dead transitions. [2024-06-27 18:37:01,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 144 transitions, 1010 flow [2024-06-27 18:37:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:37:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:37:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 18:37:01,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497076023391813 [2024-06-27 18:37:01,925 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 507 flow. Second operand 6 states and 188 transitions. [2024-06-27 18:37:01,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 144 transitions, 1010 flow [2024-06-27 18:37:01,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 144 transitions, 949 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:01,942 INFO L231 Difference]: Finished difference. Result has 86 places, 102 transitions, 634 flow [2024-06-27 18:37:01,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=86, PETRI_TRANSITIONS=102} [2024-06-27 18:37:01,942 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2024-06-27 18:37:01,942 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 102 transitions, 634 flow [2024-06-27 18:37:01,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:01,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:01,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:01,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:37:01,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:37:01,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash 987635069, now seen corresponding path program 2 times [2024-06-27 18:37:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:01,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902774303] [2024-06-27 18:37:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:02,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902774303] [2024-06-27 18:37:02,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902774303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:02,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:02,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:37:02,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629573152] [2024-06-27 18:37:02,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:02,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:37:02,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:02,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:37:02,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:37:02,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-27 18:37:02,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 102 transitions, 634 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:02,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:02,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-27 18:37:02,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:06,184 INFO L124 PetriNetUnfolderBase]: 21416/32388 cut-off events. [2024-06-27 18:37:06,186 INFO L125 PetriNetUnfolderBase]: For 89386/89386 co-relation queries the response was YES. [2024-06-27 18:37:06,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103202 conditions, 32388 events. 21416/32388 cut-off events. For 89386/89386 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 229360 event pairs, 11098 based on Foata normal form. 6/31488 useless extension candidates. Maximal degree in co-relation 103174. Up to 28396 conditions per place. [2024-06-27 18:37:06,557 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 108 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2024-06-27 18:37:06,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 968 flow [2024-06-27 18:37:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:37:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:37:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-27 18:37:06,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2024-06-27 18:37:06,561 INFO L175 Difference]: Start difference. First operand has 86 places, 102 transitions, 634 flow. Second operand 6 states and 178 transitions. [2024-06-27 18:37:06,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 968 flow [2024-06-27 18:37:06,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 928 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 18:37:06,590 INFO L231 Difference]: Finished difference. Result has 91 places, 102 transitions, 637 flow [2024-06-27 18:37:06,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=91, PETRI_TRANSITIONS=102} [2024-06-27 18:37:06,591 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 26 predicate places. [2024-06-27 18:37:06,591 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 102 transitions, 637 flow [2024-06-27 18:37:06,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:06,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:06,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:06,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:37:06,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:37:06,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1460832852, now seen corresponding path program 1 times [2024-06-27 18:37:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:06,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610856877] [2024-06-27 18:37:06,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:06,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:07,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610856877] [2024-06-27 18:37:07,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610856877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:07,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899968931] [2024-06-27 18:37:07,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:07,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:07,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-27 18:37:07,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 102 transitions, 637 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:07,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:07,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-27 18:37:07,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:11,712 INFO L124 PetriNetUnfolderBase]: 21492/31731 cut-off events. [2024-06-27 18:37:11,712 INFO L125 PetriNetUnfolderBase]: For 95554/95554 co-relation queries the response was YES. [2024-06-27 18:37:11,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103888 conditions, 31731 events. 21492/31731 cut-off events. For 95554/95554 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 214594 event pairs, 10137 based on Foata normal form. 6/30832 useless extension candidates. Maximal degree in co-relation 103857. Up to 28457 conditions per place. [2024-06-27 18:37:11,942 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 128 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2024-06-27 18:37:11,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 158 transitions, 1111 flow [2024-06-27 18:37:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-06-27 18:37:11,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388471177944862 [2024-06-27 18:37:11,944 INFO L175 Difference]: Start difference. First operand has 91 places, 102 transitions, 637 flow. Second operand 7 states and 215 transitions. [2024-06-27 18:37:11,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 158 transitions, 1111 flow [2024-06-27 18:37:11,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 158 transitions, 1058 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:37:11,978 INFO L231 Difference]: Finished difference. Result has 93 places, 106 transitions, 681 flow [2024-06-27 18:37:11,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=681, PETRI_PLACES=93, PETRI_TRANSITIONS=106} [2024-06-27 18:37:11,980 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 28 predicate places. [2024-06-27 18:37:11,998 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 106 transitions, 681 flow [2024-06-27 18:37:11,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:11,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:11,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:11,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:37:11,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:37:12,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1850895234, now seen corresponding path program 2 times [2024-06-27 18:37:12,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:12,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882592513] [2024-06-27 18:37:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:12,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:13,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:13,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882592513] [2024-06-27 18:37:13,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882592513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:13,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:13,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:13,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662531465] [2024-06-27 18:37:13,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:13,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:13,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:13,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-06-27 18:37:13,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 106 transitions, 681 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:13,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:13,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-06-27 18:37:13,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:16,670 INFO L124 PetriNetUnfolderBase]: 21622/31909 cut-off events. [2024-06-27 18:37:16,670 INFO L125 PetriNetUnfolderBase]: For 122087/122087 co-relation queries the response was YES. [2024-06-27 18:37:16,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110760 conditions, 31909 events. 21622/31909 cut-off events. For 122087/122087 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 215397 event pairs, 9725 based on Foata normal form. 6/31008 useless extension candidates. Maximal degree in co-relation 110729. Up to 28394 conditions per place. [2024-06-27 18:37:16,946 INFO L140 encePairwiseOnDemand]: 43/57 looper letters, 120 selfloop transitions, 37 changer transitions 0/168 dead transitions. [2024-06-27 18:37:16,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 168 transitions, 1285 flow [2024-06-27 18:37:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-27 18:37:16,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538847117794486 [2024-06-27 18:37:16,948 INFO L175 Difference]: Start difference. First operand has 93 places, 106 transitions, 681 flow. Second operand 7 states and 221 transitions. [2024-06-27 18:37:16,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 168 transitions, 1285 flow [2024-06-27 18:37:16,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 1220 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:37:16,999 INFO L231 Difference]: Finished difference. Result has 95 places, 114 transitions, 805 flow [2024-06-27 18:37:16,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=805, PETRI_PLACES=95, PETRI_TRANSITIONS=114} [2024-06-27 18:37:17,000 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 30 predicate places. [2024-06-27 18:37:17,000 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 114 transitions, 805 flow [2024-06-27 18:37:17,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:17,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:17,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:17,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:37:17,001 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:37:17,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:17,001 INFO L85 PathProgramCache]: Analyzing trace with hash 592135246, now seen corresponding path program 3 times [2024-06-27 18:37:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:17,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547863307] [2024-06-27 18:37:17,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat