./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix045_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix045_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:35:03,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:35:03,274 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:35:03,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:35:03,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:35:03,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:35:03,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:35:03,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:35:03,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:35:03,296 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:35:03,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:35:03,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:35:03,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:35:03,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:35:03,297 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:35:03,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:35:03,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:35:03,298 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:35:03,298 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:35:03,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:35:03,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:35:03,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:35:03,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:35:03,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:35:03,304 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:35:03,304 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:35:03,304 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:35:03,304 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:35:03,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:35:03,305 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:35:03,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:35:03,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:35:03,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:35:03,306 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:35:03,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:35:03,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:35:03,307 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:35:03,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:35:03,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:35:03,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:35:03,307 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:35:03,308 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:35:03,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:35:03,308 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:35:03,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:35:03,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:35:03,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:35:03,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:35:03,526 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:35:03,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:35:04,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:35:04,760 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:35:04,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:35:04,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb0def26/811d994a604545daa4ffa945988bb566/FLAG84374d0c0 [2024-06-27 18:35:04,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb0def26/811d994a604545daa4ffa945988bb566 [2024-06-27 18:35:04,791 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:35:04,792 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:35:04,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix045_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 18:35:04,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:35:04,923 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:35:04,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:35:04,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:35:04,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:35:04,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:35:04" (1/2) ... [2024-06-27 18:35:04,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44401e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:04, skipping insertion in model container [2024-06-27 18:35:04,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:35:04" (1/2) ... [2024-06-27 18:35:04,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10df80ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:35:04, skipping insertion in model container [2024-06-27 18:35:04,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:35:04" (2/2) ... [2024-06-27 18:35:04,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44401e29 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:04, skipping insertion in model container [2024-06-27 18:35:04,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:35:04" (2/2) ... [2024-06-27 18:35:04,934 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:35:05,004 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:35:05,005 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((! multithreaded || a$r_buff1_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:35:05,006 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((! multithreaded || a$r_buff1_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:35:05,006 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((! multithreaded || a$r_buff1_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-27 18:35:05,006 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:35:05,006 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-06-27 18:35:05,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:35:05,179 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/mix045_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 18:35:05,339 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:35:05,346 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:35:05,369 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/mix045_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:35:05,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:35:05,444 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:35:05,445 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05 WrapperNode [2024-06-27 18:35:05,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:35:05,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:35:05,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:35:05,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:35:05,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,511 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2024-06-27 18:35:05,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:35:05,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:35:05,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:35:05,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:35:05,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,553 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 18:35:05,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:35:05,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:35:05,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:35:05,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:35:05,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (1/1) ... [2024-06-27 18:35:05,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:35:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:35:05,614 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 18:35:05,630 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 18:35:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:35:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:35:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:35:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:35:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:35:05,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:35:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:35:05,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:35:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:35:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:35:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:35:05,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:35:05,646 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 18:35:05,759 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:35:05,761 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:35:06,045 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:35:06,045 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:35:06,188 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:35:06,188 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:35:06,189 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:35:06 BoogieIcfgContainer [2024-06-27 18:35:06,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:35:06,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:35:06,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:35:06,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:35:06,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:35:04" (1/4) ... [2024-06-27 18:35:06,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7a1b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:35:06, skipping insertion in model container [2024-06-27 18:35:06,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:35:04" (2/4) ... [2024-06-27 18:35:06,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7a1b77 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:35:06, skipping insertion in model container [2024-06-27 18:35:06,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:35:05" (3/4) ... [2024-06-27 18:35:06,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7a1b77 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:35:06, skipping insertion in model container [2024-06-27 18:35:06,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:35:06" (4/4) ... [2024-06-27 18:35:06,197 INFO L112 eAbstractionObserver]: Analyzing ICFG mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:35:06,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:35:06,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:35:06,211 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:35:06,254 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:35:06,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:35:06,325 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 18:35:06,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:35:06,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 18:35:06,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 18:35:06,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 18:35:06,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:35:06,399 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;@34f42a65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:35:06,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:35:06,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:35:06,404 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:35:06,404 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:35:06,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:06,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:35:06,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:06,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash 358219913, now seen corresponding path program 1 times [2024-06-27 18:35:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:06,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160985342] [2024-06-27 18:35:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:07,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:07,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160985342] [2024-06-27 18:35:07,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160985342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:07,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:07,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:35:07,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596763208] [2024-06-27 18:35:07,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:07,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:35:07,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:35:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:35:07,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:35:07,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:07,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:07,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:35:07,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:08,133 INFO L124 PetriNetUnfolderBase]: 5249/8452 cut-off events. [2024-06-27 18:35:08,133 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-27 18:35:08,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16058 conditions, 8452 events. 5249/8452 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 55480 event pairs, 4143 based on Foata normal form. 253/8025 useless extension candidates. Maximal degree in co-relation 16046. Up to 7489 conditions per place. [2024-06-27 18:35:08,181 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 43 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 18:35:08,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 229 flow [2024-06-27 18:35:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:35:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:35:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-27 18:35:08,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-06-27 18:35:08,192 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 95 transitions. [2024-06-27 18:35:08,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 229 flow [2024-06-27 18:35:08,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:08,200 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-27 18:35:08,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 18:35:08,205 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:35:08,205 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-27 18:35:08,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:08,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:08,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:35:08,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:35:08,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:08,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash 358220107, now seen corresponding path program 1 times [2024-06-27 18:35:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:08,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278485593] [2024-06-27 18:35:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:08,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:08,279 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 18:35:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:08,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278485593] [2024-06-27 18:35:08,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278485593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:08,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:08,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:35:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059919257] [2024-06-27 18:35:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:08,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:35:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:35:08,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:35:08,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-27 18:35:08,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:08,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:08,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-27 18:35:08,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:08,519 INFO L124 PetriNetUnfolderBase]: 950/1823 cut-off events. [2024-06-27 18:35:08,520 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:35:08,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 1823 events. 950/1823 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12157 event pairs, 463 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 3513. Up to 1207 conditions per place. [2024-06-27 18:35:08,549 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 35 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-27 18:35:08,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 234 flow [2024-06-27 18:35:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:35:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:35:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-27 18:35:08,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-27 18:35:08,553 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 113 transitions. [2024-06-27 18:35:08,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 234 flow [2024-06-27 18:35:08,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:35:08,555 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2024-06-27 18:35:08,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 18:35:08,556 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 18:35:08,556 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2024-06-27 18:35:08,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:08,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:08,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:08,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:35:08,559 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:08,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:08,564 INFO L85 PathProgramCache]: Analyzing trace with hash 652000455, now seen corresponding path program 1 times [2024-06-27 18:35:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:08,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819582275] [2024-06-27 18:35:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:08,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:09,060 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 18:35:09,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819582275] [2024-06-27 18:35:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819582275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:09,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:09,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:35:09,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482536549] [2024-06-27 18:35:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:09,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:35:09,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:35:09,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:35:09,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:35:09,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:09,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:09,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:35:09,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:09,734 INFO L124 PetriNetUnfolderBase]: 4457/7079 cut-off events. [2024-06-27 18:35:09,734 INFO L125 PetriNetUnfolderBase]: For 1560/1560 co-relation queries the response was YES. [2024-06-27 18:35:09,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15054 conditions, 7079 events. 4457/7079 cut-off events. For 1560/1560 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 43963 event pairs, 2907 based on Foata normal form. 3/6809 useless extension candidates. Maximal degree in co-relation 15041. Up to 6358 conditions per place. [2024-06-27 18:35:09,770 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 51 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-27 18:35:09,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 318 flow [2024-06-27 18:35:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:35:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:35:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-27 18:35:09,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-27 18:35:09,774 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 4 states and 117 transitions. [2024-06-27 18:35:09,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 318 flow [2024-06-27 18:35:09,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:35:09,777 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 185 flow [2024-06-27 18:35:09,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 18:35:09,778 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 18:35:09,778 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 185 flow [2024-06-27 18:35:09,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:09,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:09,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:09,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:35:09,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:09,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1262820792, now seen corresponding path program 1 times [2024-06-27 18:35:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:09,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777177929] [2024-06-27 18:35:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:10,359 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 18:35:10,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:10,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777177929] [2024-06-27 18:35:10,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777177929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:10,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:10,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:35:10,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290468865] [2024-06-27 18:35:10,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:10,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:35:10,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:10,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:35:10,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:35:10,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:35:10,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:10,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:10,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:35:10,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:11,051 INFO L124 PetriNetUnfolderBase]: 3850/6265 cut-off events. [2024-06-27 18:35:11,052 INFO L125 PetriNetUnfolderBase]: For 2609/2609 co-relation queries the response was YES. [2024-06-27 18:35:11,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14338 conditions, 6265 events. 3850/6265 cut-off events. For 2609/2609 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39351 event pairs, 1910 based on Foata normal form. 5/6053 useless extension candidates. Maximal degree in co-relation 14323. Up to 5419 conditions per place. [2024-06-27 18:35:11,098 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 67 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-06-27 18:35:11,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 497 flow [2024-06-27 18:35:11,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:35:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:35:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-27 18:35:11,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 18:35:11,101 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 185 flow. Second operand 5 states and 150 transitions. [2024-06-27 18:35:11,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 497 flow [2024-06-27 18:35:11,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 486 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 18:35:11,105 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 299 flow [2024-06-27 18:35:11,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-27 18:35:11,105 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 18:35:11,106 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 299 flow [2024-06-27 18:35:11,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:11,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:11,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:11,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:35:11,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:11,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash -492737274, now seen corresponding path program 1 times [2024-06-27 18:35:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921100757] [2024-06-27 18:35:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:11,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:11,911 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 18:35:11,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:11,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921100757] [2024-06-27 18:35:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921100757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:11,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:11,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:35:11,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053837932] [2024-06-27 18:35:11,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:11,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:35:11,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:11,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:35:11,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:35:11,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:35:11,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:11,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:11,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:35:11,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:12,622 INFO L124 PetriNetUnfolderBase]: 3872/6293 cut-off events. [2024-06-27 18:35:12,622 INFO L125 PetriNetUnfolderBase]: For 6420/6423 co-relation queries the response was YES. [2024-06-27 18:35:12,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16690 conditions, 6293 events. 3872/6293 cut-off events. For 6420/6423 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39439 event pairs, 1600 based on Foata normal form. 7/6084 useless extension candidates. Maximal degree in co-relation 16671. Up to 5412 conditions per place. [2024-06-27 18:35:12,651 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 77 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-27 18:35:12,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 655 flow [2024-06-27 18:35:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:12,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-27 18:35:12,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-06-27 18:35:12,653 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 299 flow. Second operand 6 states and 178 transitions. [2024-06-27 18:35:12,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 655 flow [2024-06-27 18:35:12,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 110 transitions, 647 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:35:12,658 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 376 flow [2024-06-27 18:35:12,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-27 18:35:12,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 18:35:12,659 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 376 flow [2024-06-27 18:35:12,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:12,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:12,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:12,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:35:12,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:12,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:12,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1905015335, now seen corresponding path program 1 times [2024-06-27 18:35:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:12,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873556457] [2024-06-27 18:35:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:12,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:13,612 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 18:35:13,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:13,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873556457] [2024-06-27 18:35:13,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873556457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:13,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:13,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:13,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803038022] [2024-06-27 18:35:13,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:13,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:13,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:13,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:13,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:13,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 18:35:13,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:35:13,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:13,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 18:35:13,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:14,343 INFO L124 PetriNetUnfolderBase]: 3907/6337 cut-off events. [2024-06-27 18:35:14,344 INFO L125 PetriNetUnfolderBase]: For 9687/9690 co-relation queries the response was YES. [2024-06-27 18:35:14,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18314 conditions, 6337 events. 3907/6337 cut-off events. For 9687/9690 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39689 event pairs, 1251 based on Foata normal form. 12/6136 useless extension candidates. Maximal degree in co-relation 18292. Up to 5389 conditions per place. [2024-06-27 18:35:14,379 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 84 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-27 18:35:14,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 120 transitions, 776 flow [2024-06-27 18:35:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-27 18:35:14,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2024-06-27 18:35:14,381 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 376 flow. Second operand 7 states and 202 transitions. [2024-06-27 18:35:14,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 120 transitions, 776 flow [2024-06-27 18:35:14,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 120 transitions, 723 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:14,390 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 403 flow [2024-06-27 18:35:14,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-27 18:35:14,393 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-27 18:35:14,393 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 403 flow [2024-06-27 18:35:14,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:35:14,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:14,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:14,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:35:14,394 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:14,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 864329945, now seen corresponding path program 1 times [2024-06-27 18:35:14,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:14,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196529430] [2024-06-27 18:35:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:14,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:14,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:14,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196529430] [2024-06-27 18:35:14,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196529430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:14,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:14,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:35:14,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999309824] [2024-06-27 18:35:14,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:14,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:35:14,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:14,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:35:14,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:35:14,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:14,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:14,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:14,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:14,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:15,567 INFO L124 PetriNetUnfolderBase]: 4549/7413 cut-off events. [2024-06-27 18:35:15,568 INFO L125 PetriNetUnfolderBase]: For 14749/14749 co-relation queries the response was YES. [2024-06-27 18:35:15,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22067 conditions, 7413 events. 4549/7413 cut-off events. For 14749/14749 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 47230 event pairs, 1945 based on Foata normal form. 2/7192 useless extension candidates. Maximal degree in co-relation 22043. Up to 6491 conditions per place. [2024-06-27 18:35:15,605 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 67 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-27 18:35:15,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 631 flow [2024-06-27 18:35:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:35:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:35:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 18:35:15,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-27 18:35:15,606 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 403 flow. Second operand 5 states and 119 transitions. [2024-06-27 18:35:15,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 631 flow [2024-06-27 18:35:15,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 563 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:15,614 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 407 flow [2024-06-27 18:35:15,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-06-27 18:35:15,615 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-27 18:35:15,615 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 407 flow [2024-06-27 18:35:15,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:15,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:15,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:35:15,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:15,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1015171348, now seen corresponding path program 1 times [2024-06-27 18:35:15,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:15,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268051967] [2024-06-27 18:35:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:16,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:16,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268051967] [2024-06-27 18:35:16,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268051967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:16,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:16,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:16,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830164285] [2024-06-27 18:35:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:16,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:16,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:16,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:16,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:16,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:16,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:16,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:17,186 INFO L124 PetriNetUnfolderBase]: 4577/7482 cut-off events. [2024-06-27 18:35:17,186 INFO L125 PetriNetUnfolderBase]: For 18456/18456 co-relation queries the response was YES. [2024-06-27 18:35:17,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22822 conditions, 7482 events. 4577/7482 cut-off events. For 18456/18456 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 47752 event pairs, 1838 based on Foata normal form. 6/7297 useless extension candidates. Maximal degree in co-relation 22796. Up to 6409 conditions per place. [2024-06-27 18:35:17,234 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 85 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-27 18:35:17,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 115 transitions, 795 flow [2024-06-27 18:35:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:17,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:17,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:35:17,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:35:17,236 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 407 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:35:17,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 115 transitions, 795 flow [2024-06-27 18:35:17,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 757 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:17,245 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 524 flow [2024-06-27 18:35:17,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=524, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2024-06-27 18:35:17,246 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 18:35:17,246 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 524 flow [2024-06-27 18:35:17,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:17,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:17,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:17,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:35:17,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:17,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1398896629, now seen corresponding path program 1 times [2024-06-27 18:35:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:17,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772046042] [2024-06-27 18:35:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:17,832 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 18:35:17,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:17,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772046042] [2024-06-27 18:35:17,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772046042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:17,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:17,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465238894] [2024-06-27 18:35:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:17,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:17,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:17,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:17,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:17,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:17,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:17,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:18,638 INFO L124 PetriNetUnfolderBase]: 4595/7390 cut-off events. [2024-06-27 18:35:18,638 INFO L125 PetriNetUnfolderBase]: For 25293/25302 co-relation queries the response was YES. [2024-06-27 18:35:18,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24884 conditions, 7390 events. 4595/7390 cut-off events. For 25293/25302 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 45875 event pairs, 1686 based on Foata normal form. 10/7210 useless extension candidates. Maximal degree in co-relation 24855. Up to 6437 conditions per place. [2024-06-27 18:35:18,680 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 87 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-06-27 18:35:18,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 868 flow [2024-06-27 18:35:18,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:35:18,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:35:18,681 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 524 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:35:18,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 868 flow [2024-06-27 18:35:18,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 850 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:35:18,696 INFO L231 Difference]: Finished difference. Result has 80 places, 87 transitions, 582 flow [2024-06-27 18:35:18,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=582, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2024-06-27 18:35:18,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-27 18:35:18,697 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 582 flow [2024-06-27 18:35:18,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:18,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:18,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:18,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:35:18,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:18,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:18,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1692420439, now seen corresponding path program 2 times [2024-06-27 18:35:18,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:18,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348245197] [2024-06-27 18:35:18,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:18,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:19,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348245197] [2024-06-27 18:35:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348245197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:19,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701636868] [2024-06-27 18:35:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:19,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:19,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:19,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 582 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:19,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:19,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:19,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:20,017 INFO L124 PetriNetUnfolderBase]: 4580/7490 cut-off events. [2024-06-27 18:35:20,018 INFO L125 PetriNetUnfolderBase]: For 27202/27202 co-relation queries the response was YES. [2024-06-27 18:35:20,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25259 conditions, 7490 events. 4580/7490 cut-off events. For 27202/27202 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 47771 event pairs, 1901 based on Foata normal form. 2/7301 useless extension candidates. Maximal degree in co-relation 25227. Up to 6520 conditions per place. [2024-06-27 18:35:20,061 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 88 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2024-06-27 18:35:20,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 842 flow [2024-06-27 18:35:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-27 18:35:20,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:35:20,063 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 582 flow. Second operand 6 states and 140 transitions. [2024-06-27 18:35:20,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 842 flow [2024-06-27 18:35:20,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 110 transitions, 809 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:20,079 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 583 flow [2024-06-27 18:35:20,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-06-27 18:35:20,079 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-27 18:35:20,079 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 583 flow [2024-06-27 18:35:20,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:20,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:20,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:20,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:35:20,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:20,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1690138264, now seen corresponding path program 1 times [2024-06-27 18:35:20,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:20,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994780514] [2024-06-27 18:35:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:20,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:20,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994780514] [2024-06-27 18:35:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994780514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:20,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:20,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885231763] [2024-06-27 18:35:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:20,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:20,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:20,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 583 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 18:35:20,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:20,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:20,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:21,625 INFO L124 PetriNetUnfolderBase]: 5004/7995 cut-off events. [2024-06-27 18:35:21,625 INFO L125 PetriNetUnfolderBase]: For 31442/31451 co-relation queries the response was YES. [2024-06-27 18:35:21,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27523 conditions, 7995 events. 5004/7995 cut-off events. For 31442/31451 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 49805 event pairs, 1486 based on Foata normal form. 14/7810 useless extension candidates. Maximal degree in co-relation 27490. Up to 6394 conditions per place. [2024-06-27 18:35:21,665 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 115 selfloop transitions, 34 changer transitions 0/158 dead transitions. [2024-06-27 18:35:21,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 158 transitions, 1275 flow [2024-06-27 18:35:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 18:35:21,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-27 18:35:21,679 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 583 flow. Second operand 7 states and 186 transitions. [2024-06-27 18:35:21,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 158 transitions, 1275 flow [2024-06-27 18:35:21,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 158 transitions, 1219 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:21,702 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 820 flow [2024-06-27 18:35:21,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=820, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2024-06-27 18:35:21,702 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2024-06-27 18:35:21,703 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 820 flow [2024-06-27 18:35:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 18:35:21,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:21,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:21,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:35:21,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:21,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash 925693296, now seen corresponding path program 2 times [2024-06-27 18:35:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409294338] [2024-06-27 18:35:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:22,258 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 18:35:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:22,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409294338] [2024-06-27 18:35:22,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409294338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:22,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:22,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162581654] [2024-06-27 18:35:22,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:22,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:22,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:22,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:22,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:22,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 820 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 18:35:22,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:22,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:22,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:23,340 INFO L124 PetriNetUnfolderBase]: 5088/8264 cut-off events. [2024-06-27 18:35:23,340 INFO L125 PetriNetUnfolderBase]: For 44447/44447 co-relation queries the response was YES. [2024-06-27 18:35:23,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32410 conditions, 8264 events. 5088/8264 cut-off events. For 44447/44447 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 53033 event pairs, 1818 based on Foata normal form. 6/8061 useless extension candidates. Maximal degree in co-relation 32374. Up to 7129 conditions per place. [2024-06-27 18:35:23,398 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 116 selfloop transitions, 26 changer transitions 0/151 dead transitions. [2024-06-27 18:35:23,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 151 transitions, 1327 flow [2024-06-27 18:35:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:35:23,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-27 18:35:23,400 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 820 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:35:23,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 151 transitions, 1327 flow [2024-06-27 18:35:23,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 1285 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-27 18:35:23,441 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 980 flow [2024-06-27 18:35:23,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=980, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2024-06-27 18:35:23,443 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 18:35:23,443 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 980 flow [2024-06-27 18:35:23,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 18:35:23,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:23,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:23,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:35:23,444 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:23,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 621854678, now seen corresponding path program 3 times [2024-06-27 18:35:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:23,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636113960] [2024-06-27 18:35:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:24,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:24,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636113960] [2024-06-27 18:35:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636113960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:24,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808610781] [2024-06-27 18:35:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:24,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:24,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:24,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 980 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 18:35:24,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:24,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:24,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:25,140 INFO L124 PetriNetUnfolderBase]: 5116/8294 cut-off events. [2024-06-27 18:35:25,140 INFO L125 PetriNetUnfolderBase]: For 49197/49197 co-relation queries the response was YES. [2024-06-27 18:35:25,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33305 conditions, 8294 events. 5116/8294 cut-off events. For 49197/49197 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53150 event pairs, 1820 based on Foata normal form. 6/8093 useless extension candidates. Maximal degree in co-relation 33263. Up to 7029 conditions per place. [2024-06-27 18:35:25,184 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 122 selfloop transitions, 32 changer transitions 0/163 dead transitions. [2024-06-27 18:35:25,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 1538 flow [2024-06-27 18:35:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:35:25,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:35:25,186 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 980 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:35:25,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 1538 flow [2024-06-27 18:35:25,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 163 transitions, 1469 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:25,227 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1094 flow [2024-06-27 18:35:25,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1094, PETRI_PLACES=101, PETRI_TRANSITIONS=127} [2024-06-27 18:35:25,228 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-27 18:35:25,228 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1094 flow [2024-06-27 18:35:25,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 18:35:25,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:25,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:25,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:35:25,229 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:25,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash 622130547, now seen corresponding path program 1 times [2024-06-27 18:35:25,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:25,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849796874] [2024-06-27 18:35:25,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:25,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:25,965 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 18:35:25,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:25,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849796874] [2024-06-27 18:35:25,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849796874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:25,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:25,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:25,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938784336] [2024-06-27 18:35:25,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:25,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:25,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:26,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:26,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 1094 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:26,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:26,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:27,041 INFO L124 PetriNetUnfolderBase]: 5139/8359 cut-off events. [2024-06-27 18:35:27,042 INFO L125 PetriNetUnfolderBase]: For 57488/57488 co-relation queries the response was YES. [2024-06-27 18:35:27,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34621 conditions, 8359 events. 5139/8359 cut-off events. For 57488/57488 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 53883 event pairs, 1757 based on Foata normal form. 6/8147 useless extension candidates. Maximal degree in co-relation 34577. Up to 7120 conditions per place. [2024-06-27 18:35:27,100 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 127 selfloop transitions, 33 changer transitions 0/169 dead transitions. [2024-06-27 18:35:27,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 169 transitions, 1610 flow [2024-06-27 18:35:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:27,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:35:27,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:35:27,102 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1094 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:35:27,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 169 transitions, 1610 flow [2024-06-27 18:35:27,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 169 transitions, 1550 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:27,234 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1152 flow [2024-06-27 18:35:27,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1152, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-27 18:35:27,235 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-27 18:35:27,235 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1152 flow [2024-06-27 18:35:27,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:27,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:27,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:27,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:35:27,236 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:27,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash -134111373, now seen corresponding path program 1 times [2024-06-27 18:35:27,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:27,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939222657] [2024-06-27 18:35:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:27,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:27,636 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 18:35:27,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:27,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939222657] [2024-06-27 18:35:27,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939222657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:27,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:27,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:35:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926049217] [2024-06-27 18:35:27,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:27,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:35:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:27,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:35:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:35:27,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:27,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:27,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:27,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:27,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:28,555 INFO L124 PetriNetUnfolderBase]: 5136/8343 cut-off events. [2024-06-27 18:35:28,555 INFO L125 PetriNetUnfolderBase]: For 61381/61381 co-relation queries the response was YES. [2024-06-27 18:35:28,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35391 conditions, 8343 events. 5136/8343 cut-off events. For 61381/61381 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 53636 event pairs, 1825 based on Foata normal form. 1/8131 useless extension candidates. Maximal degree in co-relation 35345. Up to 7300 conditions per place. [2024-06-27 18:35:28,612 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 121 selfloop transitions, 14 changer transitions 0/144 dead transitions. [2024-06-27 18:35:28,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 144 transitions, 1454 flow [2024-06-27 18:35:28,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:35:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:35:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 18:35:28,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:35:28,613 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1152 flow. Second operand 5 states and 115 transitions. [2024-06-27 18:35:28,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 144 transitions, 1454 flow [2024-06-27 18:35:28,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 144 transitions, 1342 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:28,667 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1078 flow [2024-06-27 18:35:28,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1078, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-27 18:35:28,668 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-27 18:35:28,668 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1078 flow [2024-06-27 18:35:28,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:28,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:28,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:28,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:35:28,669 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:28,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash -858492574, now seen corresponding path program 1 times [2024-06-27 18:35:28,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:28,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640073897] [2024-06-27 18:35:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:28,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:29,395 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 18:35:29,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640073897] [2024-06-27 18:35:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640073897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:29,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:29,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:29,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297661023] [2024-06-27 18:35:29,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:29,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:29,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:29,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:29,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1078 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:29,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:29,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:29,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:30,383 INFO L124 PetriNetUnfolderBase]: 5159/7813 cut-off events. [2024-06-27 18:35:30,383 INFO L125 PetriNetUnfolderBase]: For 62597/62609 co-relation queries the response was YES. [2024-06-27 18:35:30,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34843 conditions, 7813 events. 5159/7813 cut-off events. For 62597/62609 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 45273 event pairs, 1335 based on Foata normal form. 10/7765 useless extension candidates. Maximal degree in co-relation 34796. Up to 7108 conditions per place. [2024-06-27 18:35:30,439 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 140 selfloop transitions, 35 changer transitions 0/184 dead transitions. [2024-06-27 18:35:30,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 184 transitions, 1778 flow [2024-06-27 18:35:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:35:30,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-27 18:35:30,441 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1078 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:35:30,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 184 transitions, 1778 flow [2024-06-27 18:35:30,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 184 transitions, 1739 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:30,503 INFO L231 Difference]: Finished difference. Result has 110 places, 140 transitions, 1305 flow [2024-06-27 18:35:30,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1305, PETRI_PLACES=110, PETRI_TRANSITIONS=140} [2024-06-27 18:35:30,504 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-27 18:35:30,504 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 140 transitions, 1305 flow [2024-06-27 18:35:30,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:30,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:30,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:35:30,505 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:30,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash -858402364, now seen corresponding path program 2 times [2024-06-27 18:35:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:30,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850451309] [2024-06-27 18:35:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:30,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:31,276 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 18:35:31,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:31,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850451309] [2024-06-27 18:35:31,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850451309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:31,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:31,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883076580] [2024-06-27 18:35:31,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:31,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:31,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:31,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:31,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 140 transitions, 1305 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:31,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:31,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:31,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:32,356 INFO L124 PetriNetUnfolderBase]: 5169/7819 cut-off events. [2024-06-27 18:35:32,357 INFO L125 PetriNetUnfolderBase]: For 72940/72952 co-relation queries the response was YES. [2024-06-27 18:35:32,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36910 conditions, 7819 events. 5169/7819 cut-off events. For 72940/72952 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 45218 event pairs, 1331 based on Foata normal form. 10/7772 useless extension candidates. Maximal degree in co-relation 36861. Up to 7182 conditions per place. [2024-06-27 18:35:32,413 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 140 selfloop transitions, 37 changer transitions 0/186 dead transitions. [2024-06-27 18:35:32,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 186 transitions, 1918 flow [2024-06-27 18:35:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 18:35:32,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:35:32,414 INFO L175 Difference]: Start difference. First operand has 110 places, 140 transitions, 1305 flow. Second operand 8 states and 188 transitions. [2024-06-27 18:35:32,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 186 transitions, 1918 flow [2024-06-27 18:35:32,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 186 transitions, 1767 flow, removed 69 selfloop flow, removed 2 redundant places. [2024-06-27 18:35:32,533 INFO L231 Difference]: Finished difference. Result has 118 places, 148 transitions, 1417 flow [2024-06-27 18:35:32,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1417, PETRI_PLACES=118, PETRI_TRANSITIONS=148} [2024-06-27 18:35:32,534 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-27 18:35:32,534 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 148 transitions, 1417 flow [2024-06-27 18:35:32,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:32,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:32,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:32,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:35:32,535 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:32,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash 14931343, now seen corresponding path program 1 times [2024-06-27 18:35:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:32,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731899364] [2024-06-27 18:35:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:33,112 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 18:35:33,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731899364] [2024-06-27 18:35:33,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731899364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:33,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:33,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:33,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408852264] [2024-06-27 18:35:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:33,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:33,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:33,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:33,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 148 transitions, 1417 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:33,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:33,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:33,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:34,332 INFO L124 PetriNetUnfolderBase]: 5253/8396 cut-off events. [2024-06-27 18:35:34,332 INFO L125 PetriNetUnfolderBase]: For 82717/82726 co-relation queries the response was YES. [2024-06-27 18:35:34,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38832 conditions, 8396 events. 5253/8396 cut-off events. For 82717/82726 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 52780 event pairs, 1495 based on Foata normal form. 8/8190 useless extension candidates. Maximal degree in co-relation 38779. Up to 6583 conditions per place. [2024-06-27 18:35:34,407 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 142 selfloop transitions, 52 changer transitions 0/203 dead transitions. [2024-06-27 18:35:34,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 203 transitions, 2197 flow [2024-06-27 18:35:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-27 18:35:34,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-27 18:35:34,409 INFO L175 Difference]: Start difference. First operand has 118 places, 148 transitions, 1417 flow. Second operand 7 states and 188 transitions. [2024-06-27 18:35:34,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 203 transitions, 2197 flow [2024-06-27 18:35:34,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 203 transitions, 2087 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:34,502 INFO L231 Difference]: Finished difference. Result has 123 places, 156 transitions, 1587 flow [2024-06-27 18:35:34,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1587, PETRI_PLACES=123, PETRI_TRANSITIONS=156} [2024-06-27 18:35:34,503 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-27 18:35:34,503 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 156 transitions, 1587 flow [2024-06-27 18:35:34,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:34,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:34,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:35:34,504 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:34,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash 14936923, now seen corresponding path program 2 times [2024-06-27 18:35:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675832157] [2024-06-27 18:35:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:34,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:35,168 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 18:35:35,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:35,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675832157] [2024-06-27 18:35:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675832157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:35,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:35,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793689603] [2024-06-27 18:35:35,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:35,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:35,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:35,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 156 transitions, 1587 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:35,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:35,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:35,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:36,319 INFO L124 PetriNetUnfolderBase]: 5337/8504 cut-off events. [2024-06-27 18:35:36,319 INFO L125 PetriNetUnfolderBase]: For 96239/96248 co-relation queries the response was YES. [2024-06-27 18:35:36,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41675 conditions, 8504 events. 5337/8504 cut-off events. For 96239/96248 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 53394 event pairs, 1486 based on Foata normal form. 8/8300 useless extension candidates. Maximal degree in co-relation 41619. Up to 6645 conditions per place. [2024-06-27 18:35:36,383 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 141 selfloop transitions, 53 changer transitions 0/203 dead transitions. [2024-06-27 18:35:36,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 203 transitions, 2285 flow [2024-06-27 18:35:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:35:36,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 18:35:36,384 INFO L175 Difference]: Start difference. First operand has 123 places, 156 transitions, 1587 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:35:36,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 203 transitions, 2285 flow [2024-06-27 18:35:36,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 203 transitions, 2184 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:36,478 INFO L231 Difference]: Finished difference. Result has 127 places, 160 transitions, 1666 flow [2024-06-27 18:35:36,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1666, PETRI_PLACES=127, PETRI_TRANSITIONS=160} [2024-06-27 18:35:36,479 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 18:35:36,479 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 160 transitions, 1666 flow [2024-06-27 18:35:36,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:36,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:36,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:36,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:35:36,479 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:36,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1367981866, now seen corresponding path program 1 times [2024-06-27 18:35:36,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:36,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704974166] [2024-06-27 18:35:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:36,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:37,163 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 18:35:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:37,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704974166] [2024-06-27 18:35:37,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704974166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:37,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:37,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:37,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139456790] [2024-06-27 18:35:37,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:37,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:37,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:37,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 160 transitions, 1666 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 18:35:37,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:37,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:37,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:38,509 INFO L124 PetriNetUnfolderBase]: 5356/8428 cut-off events. [2024-06-27 18:35:38,509 INFO L125 PetriNetUnfolderBase]: For 103248/103248 co-relation queries the response was YES. [2024-06-27 18:35:38,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42100 conditions, 8428 events. 5356/8428 cut-off events. For 103248/103248 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52473 event pairs, 1786 based on Foata normal form. 3/8282 useless extension candidates. Maximal degree in co-relation 42043. Up to 7443 conditions per place. [2024-06-27 18:35:38,587 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 158 selfloop transitions, 37 changer transitions 0/204 dead transitions. [2024-06-27 18:35:38,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 204 transitions, 2306 flow [2024-06-27 18:35:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:35:38,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-27 18:35:38,588 INFO L175 Difference]: Start difference. First operand has 127 places, 160 transitions, 1666 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:35:38,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 204 transitions, 2306 flow [2024-06-27 18:35:38,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 204 transitions, 2202 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:38,697 INFO L231 Difference]: Finished difference. Result has 132 places, 173 transitions, 1836 flow [2024-06-27 18:35:38,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1836, PETRI_PLACES=132, PETRI_TRANSITIONS=173} [2024-06-27 18:35:38,698 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-27 18:35:38,698 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 173 transitions, 1836 flow [2024-06-27 18:35:38,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 18:35:38,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:38,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:38,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:35:38,699 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:38,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:38,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2105872287, now seen corresponding path program 3 times [2024-06-27 18:35:38,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:38,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761106737] [2024-06-27 18:35:38,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:39,241 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 18:35:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761106737] [2024-06-27 18:35:39,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761106737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:39,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:39,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:35:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022237488] [2024-06-27 18:35:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:39,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:35:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:35:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:35:39,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:39,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 173 transitions, 1836 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:39,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:39,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:39,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:40,449 INFO L124 PetriNetUnfolderBase]: 5384/8471 cut-off events. [2024-06-27 18:35:40,449 INFO L125 PetriNetUnfolderBase]: For 113460/113472 co-relation queries the response was YES. [2024-06-27 18:35:40,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43651 conditions, 8471 events. 5384/8471 cut-off events. For 113460/113472 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 52788 event pairs, 1799 based on Foata normal form. 14/8334 useless extension candidates. Maximal degree in co-relation 43591. Up to 7466 conditions per place. [2024-06-27 18:35:40,638 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 174 selfloop transitions, 28 changer transitions 0/211 dead transitions. [2024-06-27 18:35:40,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 211 transitions, 2442 flow [2024-06-27 18:35:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:35:40,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:35:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:35:40,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 18:35:40,639 INFO L175 Difference]: Start difference. First operand has 132 places, 173 transitions, 1836 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:35:40,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 211 transitions, 2442 flow [2024-06-27 18:35:40,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 211 transitions, 2352 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:40,757 INFO L231 Difference]: Finished difference. Result has 136 places, 177 transitions, 1881 flow [2024-06-27 18:35:40,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1881, PETRI_PLACES=136, PETRI_TRANSITIONS=177} [2024-06-27 18:35:40,758 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-27 18:35:40,758 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 177 transitions, 1881 flow [2024-06-27 18:35:40,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 18:35:40,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:40,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:40,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:35:40,758 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:40,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash 137516778, now seen corresponding path program 1 times [2024-06-27 18:35:40,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:40,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641440504] [2024-06-27 18:35:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:41,287 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 18:35:41,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:41,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641440504] [2024-06-27 18:35:41,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641440504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:41,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:41,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:35:41,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070358507] [2024-06-27 18:35:41,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:35:41,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:41,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:35:41,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:35:41,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:35:41,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 177 transitions, 1881 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 18:35:41,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:41,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:35:41,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:42,527 INFO L124 PetriNetUnfolderBase]: 6017/9220 cut-off events. [2024-06-27 18:35:42,528 INFO L125 PetriNetUnfolderBase]: For 133574/133574 co-relation queries the response was YES. [2024-06-27 18:35:42,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48244 conditions, 9220 events. 6017/9220 cut-off events. For 133574/133574 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 55874 event pairs, 2069 based on Foata normal form. 1/9051 useless extension candidates. Maximal degree in co-relation 48183. Up to 8515 conditions per place. [2024-06-27 18:35:42,612 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 174 selfloop transitions, 17 changer transitions 0/199 dead transitions. [2024-06-27 18:35:42,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 199 transitions, 2349 flow [2024-06-27 18:35:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:35:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:35:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 18:35:42,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-27 18:35:42,613 INFO L175 Difference]: Start difference. First operand has 136 places, 177 transitions, 1881 flow. Second operand 6 states and 130 transitions. [2024-06-27 18:35:42,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 199 transitions, 2349 flow [2024-06-27 18:35:42,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 2260 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:42,751 INFO L231 Difference]: Finished difference. Result has 137 places, 180 transitions, 1873 flow [2024-06-27 18:35:42,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1873, PETRI_PLACES=137, PETRI_TRANSITIONS=180} [2024-06-27 18:35:42,752 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-27 18:35:42,752 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 180 transitions, 1873 flow [2024-06-27 18:35:42,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 18:35:42,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:42,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:42,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:35:42,752 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:42,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash 344719833, now seen corresponding path program 1 times [2024-06-27 18:35:42,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:42,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933146329] [2024-06-27 18:35:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:43,673 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 18:35:43,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:43,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933146329] [2024-06-27 18:35:43,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933146329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:43,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:43,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:43,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513895287] [2024-06-27 18:35:43,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:43,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:43,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:43,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:43,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 180 transitions, 1873 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:43,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:43,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:43,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:44,947 INFO L124 PetriNetUnfolderBase]: 5605/8694 cut-off events. [2024-06-27 18:35:44,947 INFO L125 PetriNetUnfolderBase]: For 140295/140307 co-relation queries the response was YES. [2024-06-27 18:35:44,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47171 conditions, 8694 events. 5605/8694 cut-off events. For 140295/140307 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 53380 event pairs, 1214 based on Foata normal form. 12/8532 useless extension candidates. Maximal degree in co-relation 47109. Up to 7548 conditions per place. [2024-06-27 18:35:45,031 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 197 selfloop transitions, 34 changer transitions 0/241 dead transitions. [2024-06-27 18:35:45,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 241 transitions, 2717 flow [2024-06-27 18:35:45,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 18:35:45,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 18:35:45,033 INFO L175 Difference]: Start difference. First operand has 137 places, 180 transitions, 1873 flow. Second operand 8 states and 200 transitions. [2024-06-27 18:35:45,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 241 transitions, 2717 flow [2024-06-27 18:35:45,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 241 transitions, 2662 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 18:35:45,180 INFO L231 Difference]: Finished difference. Result has 142 places, 190 transitions, 2064 flow [2024-06-27 18:35:45,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2064, PETRI_PLACES=142, PETRI_TRANSITIONS=190} [2024-06-27 18:35:45,180 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-27 18:35:45,180 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 190 transitions, 2064 flow [2024-06-27 18:35:45,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:45,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:45,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:45,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:35:45,181 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:45,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash -843464759, now seen corresponding path program 1 times [2024-06-27 18:35:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724806993] [2024-06-27 18:35:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:45,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724806993] [2024-06-27 18:35:45,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724806993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:45,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:45,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:45,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004203763] [2024-06-27 18:35:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:45,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:45,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:45,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:46,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:46,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 190 transitions, 2064 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:46,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:46,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:46,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:47,198 INFO L124 PetriNetUnfolderBase]: 5730/8698 cut-off events. [2024-06-27 18:35:47,198 INFO L125 PetriNetUnfolderBase]: For 153837/153849 co-relation queries the response was YES. [2024-06-27 18:35:47,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48960 conditions, 8698 events. 5730/8698 cut-off events. For 153837/153849 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 51887 event pairs, 1161 based on Foata normal form. 9/8606 useless extension candidates. Maximal degree in co-relation 48896. Up to 6344 conditions per place. [2024-06-27 18:35:47,280 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 178 selfloop transitions, 82 changer transitions 0/270 dead transitions. [2024-06-27 18:35:47,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 270 transitions, 3360 flow [2024-06-27 18:35:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 18:35:47,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677083333333334 [2024-06-27 18:35:47,282 INFO L175 Difference]: Start difference. First operand has 142 places, 190 transitions, 2064 flow. Second operand 8 states and 218 transitions. [2024-06-27 18:35:47,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 270 transitions, 3360 flow [2024-06-27 18:35:47,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 270 transitions, 3273 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 18:35:47,471 INFO L231 Difference]: Finished difference. Result has 150 places, 205 transitions, 2423 flow [2024-06-27 18:35:47,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2423, PETRI_PLACES=150, PETRI_TRANSITIONS=205} [2024-06-27 18:35:47,471 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-27 18:35:47,472 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 205 transitions, 2423 flow [2024-06-27 18:35:47,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:47,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:47,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:47,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:35:47,472 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:47,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash -843464883, now seen corresponding path program 2 times [2024-06-27 18:35:47,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:47,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776322083] [2024-06-27 18:35:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:47,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:48,311 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 18:35:48,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:48,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776322083] [2024-06-27 18:35:48,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776322083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:48,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:48,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186021377] [2024-06-27 18:35:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:48,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:48,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:48,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:48,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 205 transitions, 2423 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:48,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:48,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:48,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:49,802 INFO L124 PetriNetUnfolderBase]: 5733/8839 cut-off events. [2024-06-27 18:35:49,802 INFO L125 PetriNetUnfolderBase]: For 172543/172555 co-relation queries the response was YES. [2024-06-27 18:35:49,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52408 conditions, 8839 events. 5733/8839 cut-off events. For 172543/172555 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 54016 event pairs, 1501 based on Foata normal form. 12/8689 useless extension candidates. Maximal degree in co-relation 52339. Up to 7849 conditions per place. [2024-06-27 18:35:49,889 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 218 selfloop transitions, 33 changer transitions 0/261 dead transitions. [2024-06-27 18:35:49,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 261 transitions, 3105 flow [2024-06-27 18:35:49,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:35:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:35:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 18:35:49,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-27 18:35:49,890 INFO L175 Difference]: Start difference. First operand has 150 places, 205 transitions, 2423 flow. Second operand 9 states and 221 transitions. [2024-06-27 18:35:49,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 261 transitions, 3105 flow [2024-06-27 18:35:50,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 261 transitions, 2956 flow, removed 61 selfloop flow, removed 2 redundant places. [2024-06-27 18:35:50,159 INFO L231 Difference]: Finished difference. Result has 157 places, 205 transitions, 2348 flow [2024-06-27 18:35:50,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2348, PETRI_PLACES=157, PETRI_TRANSITIONS=205} [2024-06-27 18:35:50,160 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-27 18:35:50,160 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 205 transitions, 2348 flow [2024-06-27 18:35:50,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:50,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:50,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:50,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:35:50,161 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:50,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:50,161 INFO L85 PathProgramCache]: Analyzing trace with hash 347581567, now seen corresponding path program 2 times [2024-06-27 18:35:50,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:50,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521117004] [2024-06-27 18:35:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:51,041 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 18:35:51,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:51,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521117004] [2024-06-27 18:35:51,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521117004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:51,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:51,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495693593] [2024-06-27 18:35:51,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:51,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:51,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:51,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:51,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 205 transitions, 2348 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:51,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:51,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:51,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:52,608 INFO L124 PetriNetUnfolderBase]: 5829/8960 cut-off events. [2024-06-27 18:35:52,608 INFO L125 PetriNetUnfolderBase]: For 174356/174368 co-relation queries the response was YES. [2024-06-27 18:35:52,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52491 conditions, 8960 events. 5829/8960 cut-off events. For 174356/174368 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 54727 event pairs, 1375 based on Foata normal form. 9/8815 useless extension candidates. Maximal degree in co-relation 52420. Up to 7197 conditions per place. [2024-06-27 18:35:52,696 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 192 selfloop transitions, 58 changer transitions 0/260 dead transitions. [2024-06-27 18:35:52,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 260 transitions, 3219 flow [2024-06-27 18:35:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:35:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:35:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 18:35:52,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 18:35:52,697 INFO L175 Difference]: Start difference. First operand has 157 places, 205 transitions, 2348 flow. Second operand 8 states and 210 transitions. [2024-06-27 18:35:52,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 260 transitions, 3219 flow [2024-06-27 18:35:52,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 260 transitions, 3142 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:52,883 INFO L231 Difference]: Finished difference. Result has 157 places, 209 transitions, 2467 flow [2024-06-27 18:35:52,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2467, PETRI_PLACES=157, PETRI_TRANSITIONS=209} [2024-06-27 18:35:52,883 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-27 18:35:52,883 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 209 transitions, 2467 flow [2024-06-27 18:35:52,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:52,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:52,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:52,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:35:52,884 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:52,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash 347576917, now seen corresponding path program 3 times [2024-06-27 18:35:52,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:52,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301141670] [2024-06-27 18:35:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:52,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:53,706 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 18:35:53,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:53,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301141670] [2024-06-27 18:35:53,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301141670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:53,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:53,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:53,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887482050] [2024-06-27 18:35:53,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:53,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:53,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:53,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:53,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 209 transitions, 2467 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:53,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:53,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:53,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:55,386 INFO L124 PetriNetUnfolderBase]: 5973/9148 cut-off events. [2024-06-27 18:35:55,387 INFO L125 PetriNetUnfolderBase]: For 189062/189074 co-relation queries the response was YES. [2024-06-27 18:35:55,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54947 conditions, 9148 events. 5973/9148 cut-off events. For 189062/189074 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 55655 event pairs, 1393 based on Foata normal form. 9/9006 useless extension candidates. Maximal degree in co-relation 54875. Up to 7243 conditions per place. [2024-06-27 18:35:55,472 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 200 selfloop transitions, 68 changer transitions 0/278 dead transitions. [2024-06-27 18:35:55,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 278 transitions, 3527 flow [2024-06-27 18:35:55,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:35:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:35:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 18:35:55,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-27 18:35:55,474 INFO L175 Difference]: Start difference. First operand has 157 places, 209 transitions, 2467 flow. Second operand 9 states and 237 transitions. [2024-06-27 18:35:55,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 278 transitions, 3527 flow [2024-06-27 18:35:55,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 278 transitions, 3370 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:55,732 INFO L231 Difference]: Finished difference. Result has 161 places, 217 transitions, 2607 flow [2024-06-27 18:35:55,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2607, PETRI_PLACES=161, PETRI_TRANSITIONS=217} [2024-06-27 18:35:55,733 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 18:35:55,733 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 217 transitions, 2607 flow [2024-06-27 18:35:55,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:55,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:55,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:55,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:35:55,733 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:55,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:55,734 INFO L85 PathProgramCache]: Analyzing trace with hash -725377079, now seen corresponding path program 4 times [2024-06-27 18:35:55,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:55,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678062952] [2024-06-27 18:35:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:55,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:56,668 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 18:35:56,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:56,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678062952] [2024-06-27 18:35:56,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678062952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:56,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:56,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:56,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490402411] [2024-06-27 18:35:56,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:56,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:56,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:56,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:56,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:56,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 217 transitions, 2607 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:56,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:56,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:56,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:58,136 INFO L124 PetriNetUnfolderBase]: 6115/9380 cut-off events. [2024-06-27 18:35:58,136 INFO L125 PetriNetUnfolderBase]: For 207083/207095 co-relation queries the response was YES. [2024-06-27 18:35:58,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57441 conditions, 9380 events. 6115/9380 cut-off events. For 207083/207095 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 57477 event pairs, 1354 based on Foata normal form. 9/9227 useless extension candidates. Maximal degree in co-relation 57367. Up to 7346 conditions per place. [2024-06-27 18:35:58,230 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 215 selfloop transitions, 70 changer transitions 0/295 dead transitions. [2024-06-27 18:35:58,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 295 transitions, 3853 flow [2024-06-27 18:35:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:35:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:35:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-27 18:35:58,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-06-27 18:35:58,231 INFO L175 Difference]: Start difference. First operand has 161 places, 217 transitions, 2607 flow. Second operand 9 states and 244 transitions. [2024-06-27 18:35:58,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 295 transitions, 3853 flow [2024-06-27 18:35:58,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 295 transitions, 3725 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:58,571 INFO L231 Difference]: Finished difference. Result has 166 places, 226 transitions, 2817 flow [2024-06-27 18:35:58,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2817, PETRI_PLACES=166, PETRI_TRANSITIONS=226} [2024-06-27 18:35:58,572 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-27 18:35:58,572 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 226 transitions, 2817 flow [2024-06-27 18:35:58,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:58,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:58,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:58,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:35:58,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:35:58,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash 463045717, now seen corresponding path program 5 times [2024-06-27 18:35:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:58,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236825658] [2024-06-27 18:35:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:58,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:59,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236825658] [2024-06-27 18:35:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236825658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:35:59,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907850957] [2024-06-27 18:35:59,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:59,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:35:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:59,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:35:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:35:59,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:35:59,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 226 transitions, 2817 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:35:59,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:59,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:35:59,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:00,786 INFO L124 PetriNetUnfolderBase]: 6197/9500 cut-off events. [2024-06-27 18:36:00,787 INFO L125 PetriNetUnfolderBase]: For 223339/223351 co-relation queries the response was YES. [2024-06-27 18:36:00,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59919 conditions, 9500 events. 6197/9500 cut-off events. For 223339/223351 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 58334 event pairs, 1371 based on Foata normal form. 9/9346 useless extension candidates. Maximal degree in co-relation 59842. Up to 7708 conditions per place. [2024-06-27 18:36:00,888 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 210 selfloop transitions, 60 changer transitions 0/280 dead transitions. [2024-06-27 18:36:00,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 280 transitions, 3717 flow [2024-06-27 18:36:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:00,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:00,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 18:36:00,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-27 18:36:00,889 INFO L175 Difference]: Start difference. First operand has 166 places, 226 transitions, 2817 flow. Second operand 8 states and 207 transitions. [2024-06-27 18:36:00,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 280 transitions, 3717 flow [2024-06-27 18:36:01,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 280 transitions, 3553 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:01,198 INFO L231 Difference]: Finished difference. Result has 169 places, 230 transitions, 2880 flow [2024-06-27 18:36:01,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2880, PETRI_PLACES=169, PETRI_TRANSITIONS=230} [2024-06-27 18:36:01,199 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 18:36:01,199 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 230 transitions, 2880 flow [2024-06-27 18:36:01,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:36:01,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:01,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:01,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:36:01,200 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:01,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:01,200 INFO L85 PathProgramCache]: Analyzing trace with hash 463052661, now seen corresponding path program 1 times [2024-06-27 18:36:01,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:01,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511000584] [2024-06-27 18:36:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:01,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:02,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:02,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511000584] [2024-06-27 18:36:02,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511000584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:02,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:02,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:02,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623130930] [2024-06-27 18:36:02,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:02,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:02,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:02,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:02,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:02,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:02,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 230 transitions, 2880 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 18:36:02,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:02,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:02,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:03,970 INFO L124 PetriNetUnfolderBase]: 6345/9736 cut-off events. [2024-06-27 18:36:03,970 INFO L125 PetriNetUnfolderBase]: For 242068/242080 co-relation queries the response was YES. [2024-06-27 18:36:04,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62111 conditions, 9736 events. 6345/9736 cut-off events. For 242068/242080 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 60086 event pairs, 1391 based on Foata normal form. 15/9579 useless extension candidates. Maximal degree in co-relation 62032. Up to 7878 conditions per place. [2024-06-27 18:36:04,121 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 217 selfloop transitions, 58 changer transitions 0/285 dead transitions. [2024-06-27 18:36:04,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 285 transitions, 3846 flow [2024-06-27 18:36:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 18:36:04,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 18:36:04,123 INFO L175 Difference]: Start difference. First operand has 169 places, 230 transitions, 2880 flow. Second operand 8 states and 210 transitions. [2024-06-27 18:36:04,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 285 transitions, 3846 flow [2024-06-27 18:36:04,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 285 transitions, 3673 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:04,537 INFO L231 Difference]: Finished difference. Result has 171 places, 234 transitions, 2926 flow [2024-06-27 18:36:04,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2926, PETRI_PLACES=171, PETRI_TRANSITIONS=234} [2024-06-27 18:36:04,537 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-27 18:36:04,537 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 234 transitions, 2926 flow [2024-06-27 18:36:04,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 18:36:04,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:04,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:04,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:36:04,538 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:04,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1217777841, now seen corresponding path program 1 times [2024-06-27 18:36:04,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:04,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669400378] [2024-06-27 18:36:04,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:04,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:05,060 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 18:36:05,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669400378] [2024-06-27 18:36:05,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669400378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:05,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192712610] [2024-06-27 18:36:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:05,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:05,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:05,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:05,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 234 transitions, 2926 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:05,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:05,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:05,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:06,556 INFO L124 PetriNetUnfolderBase]: 6354/9799 cut-off events. [2024-06-27 18:36:06,556 INFO L125 PetriNetUnfolderBase]: For 247690/247690 co-relation queries the response was YES. [2024-06-27 18:36:06,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63153 conditions, 9799 events. 6354/9799 cut-off events. For 247690/247690 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 60966 event pairs, 1602 based on Foata normal form. 1/9610 useless extension candidates. Maximal degree in co-relation 63073. Up to 8915 conditions per place. [2024-06-27 18:36:06,651 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 235 selfloop transitions, 18 changer transitions 0/263 dead transitions. [2024-06-27 18:36:06,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 263 transitions, 3629 flow [2024-06-27 18:36:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:36:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:36:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:36:06,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:36:06,653 INFO L175 Difference]: Start difference. First operand has 171 places, 234 transitions, 2926 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:36:06,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 263 transitions, 3629 flow [2024-06-27 18:36:07,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 263 transitions, 3436 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:07,025 INFO L231 Difference]: Finished difference. Result has 171 places, 237 transitions, 2834 flow [2024-06-27 18:36:07,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2834, PETRI_PLACES=171, PETRI_TRANSITIONS=237} [2024-06-27 18:36:07,025 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-27 18:36:07,025 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 237 transitions, 2834 flow [2024-06-27 18:36:07,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:07,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:07,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:07,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:36:07,026 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:07,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash -285370107, now seen corresponding path program 2 times [2024-06-27 18:36:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:07,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435281836] [2024-06-27 18:36:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:07,766 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 18:36:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435281836] [2024-06-27 18:36:07,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435281836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:07,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:07,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:07,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90920940] [2024-06-27 18:36:07,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:07,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:07,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:07,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:07,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 237 transitions, 2834 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:36:07,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:07,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:07,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:09,430 INFO L124 PetriNetUnfolderBase]: 6441/9969 cut-off events. [2024-06-27 18:36:09,430 INFO L125 PetriNetUnfolderBase]: For 255604/255604 co-relation queries the response was YES. [2024-06-27 18:36:09,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62719 conditions, 9969 events. 6441/9969 cut-off events. For 255604/255604 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 62426 event pairs, 1853 based on Foata normal form. 6/9800 useless extension candidates. Maximal degree in co-relation 62638. Up to 8915 conditions per place. [2024-06-27 18:36:09,509 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 241 selfloop transitions, 29 changer transitions 0/280 dead transitions. [2024-06-27 18:36:09,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 280 transitions, 3632 flow [2024-06-27 18:36:09,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:36:09,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 18:36:09,511 INFO L175 Difference]: Start difference. First operand has 171 places, 237 transitions, 2834 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:36:09,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 280 transitions, 3632 flow [2024-06-27 18:36:09,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 280 transitions, 3502 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:09,829 INFO L231 Difference]: Finished difference. Result has 174 places, 240 transitions, 2860 flow [2024-06-27 18:36:09,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2860, PETRI_PLACES=174, PETRI_TRANSITIONS=240} [2024-06-27 18:36:09,830 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-27 18:36:09,830 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 240 transitions, 2860 flow [2024-06-27 18:36:09,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:36:09,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:09,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:09,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:36:09,830 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:09,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:09,831 INFO L85 PathProgramCache]: Analyzing trace with hash 867032945, now seen corresponding path program 3 times [2024-06-27 18:36:09,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:09,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748257787] [2024-06-27 18:36:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:09,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:10,506 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 18:36:10,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:10,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748257787] [2024-06-27 18:36:10,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748257787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:10,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:10,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:10,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551249155] [2024-06-27 18:36:10,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:10,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:10,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:10,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:10,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 240 transitions, 2860 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 18:36:10,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:10,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:10,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:12,148 INFO L124 PetriNetUnfolderBase]: 6510/10094 cut-off events. [2024-06-27 18:36:12,148 INFO L125 PetriNetUnfolderBase]: For 272085/272085 co-relation queries the response was YES. [2024-06-27 18:36:12,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64508 conditions, 10094 events. 6510/10094 cut-off events. For 272085/272085 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 63457 event pairs, 1827 based on Foata normal form. 6/9919 useless extension candidates. Maximal degree in co-relation 64426. Up to 8986 conditions per place. [2024-06-27 18:36:12,257 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 239 selfloop transitions, 36 changer transitions 0/285 dead transitions. [2024-06-27 18:36:12,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 285 transitions, 3686 flow [2024-06-27 18:36:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:36:12,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 18:36:12,258 INFO L175 Difference]: Start difference. First operand has 174 places, 240 transitions, 2860 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:36:12,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 285 transitions, 3686 flow [2024-06-27 18:36:12,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 285 transitions, 3554 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:12,621 INFO L231 Difference]: Finished difference. Result has 177 places, 247 transitions, 2943 flow [2024-06-27 18:36:12,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2943, PETRI_PLACES=177, PETRI_TRANSITIONS=247} [2024-06-27 18:36:12,621 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-27 18:36:12,621 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 247 transitions, 2943 flow [2024-06-27 18:36:12,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 18:36:12,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:12,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:12,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:36:12,622 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:12,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash 857532561, now seen corresponding path program 6 times [2024-06-27 18:36:12,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:12,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397098675] [2024-06-27 18:36:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:12,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:13,316 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 18:36:13,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:13,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397098675] [2024-06-27 18:36:13,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397098675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:13,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:13,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:13,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549315673] [2024-06-27 18:36:13,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:13,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:13,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:13,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:13,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:13,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:13,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 247 transitions, 2943 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:36:13,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:13,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:13,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:14,958 INFO L124 PetriNetUnfolderBase]: 6625/10246 cut-off events. [2024-06-27 18:36:14,958 INFO L125 PetriNetUnfolderBase]: For 289860/289872 co-relation queries the response was YES. [2024-06-27 18:36:15,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66325 conditions, 10246 events. 6625/10246 cut-off events. For 289860/289872 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 64501 event pairs, 1809 based on Foata normal form. 17/10084 useless extension candidates. Maximal degree in co-relation 66241. Up to 8881 conditions per place. [2024-06-27 18:36:15,075 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 241 selfloop transitions, 60 changer transitions 0/311 dead transitions. [2024-06-27 18:36:15,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 311 transitions, 4210 flow [2024-06-27 18:36:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:15,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:36:15,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-27 18:36:15,076 INFO L175 Difference]: Start difference. First operand has 177 places, 247 transitions, 2943 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:36:15,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 311 transitions, 4210 flow [2024-06-27 18:36:15,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 311 transitions, 4051 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:15,513 INFO L231 Difference]: Finished difference. Result has 182 places, 262 transitions, 3288 flow [2024-06-27 18:36:15,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3288, PETRI_PLACES=182, PETRI_TRANSITIONS=262} [2024-06-27 18:36:15,513 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-27 18:36:15,514 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 262 transitions, 3288 flow [2024-06-27 18:36:15,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:36:15,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:15,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:15,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:36:15,514 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:15,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash 533299135, now seen corresponding path program 4 times [2024-06-27 18:36:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:15,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528146187] [2024-06-27 18:36:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:16,301 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 18:36:16,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:16,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528146187] [2024-06-27 18:36:16,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528146187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:16,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391587747] [2024-06-27 18:36:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:16,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:16,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:16,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:16,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:16,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:16,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 262 transitions, 3288 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 18:36:16,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:16,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:16,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:18,060 INFO L124 PetriNetUnfolderBase]: 6693/10357 cut-off events. [2024-06-27 18:36:18,060 INFO L125 PetriNetUnfolderBase]: For 307061/307061 co-relation queries the response was YES. [2024-06-27 18:36:18,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68241 conditions, 10357 events. 6693/10357 cut-off events. For 307061/307061 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 65211 event pairs, 1867 based on Foata normal form. 6/10181 useless extension candidates. Maximal degree in co-relation 68154. Up to 9158 conditions per place. [2024-06-27 18:36:18,230 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 252 selfloop transitions, 43 changer transitions 0/305 dead transitions. [2024-06-27 18:36:18,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 305 transitions, 4162 flow [2024-06-27 18:36:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:36:18,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-27 18:36:18,232 INFO L175 Difference]: Start difference. First operand has 182 places, 262 transitions, 3288 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:36:18,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 305 transitions, 4162 flow [2024-06-27 18:36:18,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 305 transitions, 3951 flow, removed 85 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:18,862 INFO L231 Difference]: Finished difference. Result has 187 places, 265 transitions, 3281 flow [2024-06-27 18:36:18,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3281, PETRI_PLACES=187, PETRI_TRANSITIONS=265} [2024-06-27 18:36:18,863 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-27 18:36:18,863 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 265 transitions, 3281 flow [2024-06-27 18:36:18,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 18:36:18,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:18,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:18,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:36:18,863 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:18,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash 857769897, now seen corresponding path program 1 times [2024-06-27 18:36:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:18,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927959755] [2024-06-27 18:36:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:19,515 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 18:36:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:19,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927959755] [2024-06-27 18:36:19,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927959755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:19,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:19,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:36:19,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435748996] [2024-06-27 18:36:19,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:19,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:36:19,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:19,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:36:19,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:36:19,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:19,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 265 transitions, 3281 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:36:19,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:19,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:19,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:21,203 INFO L124 PetriNetUnfolderBase]: 6694/10383 cut-off events. [2024-06-27 18:36:21,203 INFO L125 PetriNetUnfolderBase]: For 312363/312372 co-relation queries the response was YES. [2024-06-27 18:36:21,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68335 conditions, 10383 events. 6694/10383 cut-off events. For 312363/312372 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 65757 event pairs, 1868 based on Foata normal form. 9/10204 useless extension candidates. Maximal degree in co-relation 68246. Up to 9172 conditions per place. [2024-06-27 18:36:21,315 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 250 selfloop transitions, 43 changer transitions 0/303 dead transitions. [2024-06-27 18:36:21,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 303 transitions, 4128 flow [2024-06-27 18:36:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 18:36:21,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:36:21,316 INFO L175 Difference]: Start difference. First operand has 187 places, 265 transitions, 3281 flow. Second operand 7 states and 174 transitions. [2024-06-27 18:36:21,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 303 transitions, 4128 flow [2024-06-27 18:36:21,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 303 transitions, 3864 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:21,825 INFO L231 Difference]: Finished difference. Result has 188 places, 269 transitions, 3212 flow [2024-06-27 18:36:21,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3212, PETRI_PLACES=188, PETRI_TRANSITIONS=269} [2024-06-27 18:36:21,825 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 18:36:21,826 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 269 transitions, 3212 flow [2024-06-27 18:36:21,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 18:36:21,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:21,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:21,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:36:21,826 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:21,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash 277461715, now seen corresponding path program 5 times [2024-06-27 18:36:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:21,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983052381] [2024-06-27 18:36:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:22,668 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 18:36:22,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:22,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983052381] [2024-06-27 18:36:22,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983052381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:22,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:22,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:22,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207119275] [2024-06-27 18:36:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:22,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:22,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:22,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:22,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 269 transitions, 3212 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 18:36:22,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:22,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:22,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:24,539 INFO L124 PetriNetUnfolderBase]: 6724/10434 cut-off events. [2024-06-27 18:36:24,539 INFO L125 PetriNetUnfolderBase]: For 316324/316324 co-relation queries the response was YES. [2024-06-27 18:36:24,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68096 conditions, 10434 events. 6724/10434 cut-off events. For 316324/316324 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 66076 event pairs, 1886 based on Foata normal form. 6/10249 useless extension candidates. Maximal degree in co-relation 68006. Up to 9182 conditions per place. [2024-06-27 18:36:24,682 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 271 selfloop transitions, 35 changer transitions 0/316 dead transitions. [2024-06-27 18:36:24,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 316 transitions, 4210 flow [2024-06-27 18:36:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:36:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:36:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:36:24,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-27 18:36:24,684 INFO L175 Difference]: Start difference. First operand has 188 places, 269 transitions, 3212 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:36:24,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 316 transitions, 4210 flow [2024-06-27 18:36:25,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 316 transitions, 4114 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:25,248 INFO L231 Difference]: Finished difference. Result has 191 places, 272 transitions, 3310 flow [2024-06-27 18:36:25,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3126, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3310, PETRI_PLACES=191, PETRI_TRANSITIONS=272} [2024-06-27 18:36:25,249 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-27 18:36:25,249 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 272 transitions, 3310 flow [2024-06-27 18:36:25,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 18:36:25,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:25,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:36:25,250 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:25,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:25,250 INFO L85 PathProgramCache]: Analyzing trace with hash -31959951, now seen corresponding path program 2 times [2024-06-27 18:36:25,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:25,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780018243] [2024-06-27 18:36:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:25,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:25,784 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 18:36:25,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:25,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780018243] [2024-06-27 18:36:25,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780018243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:25,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:25,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:25,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203874187] [2024-06-27 18:36:25,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:25,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:25,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:25,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 272 transitions, 3310 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:25,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:25,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:25,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:27,930 INFO L124 PetriNetUnfolderBase]: 6721/10433 cut-off events. [2024-06-27 18:36:27,930 INFO L125 PetriNetUnfolderBase]: For 312200/312200 co-relation queries the response was YES. [2024-06-27 18:36:27,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68075 conditions, 10433 events. 6721/10433 cut-off events. For 312200/312200 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 66035 event pairs, 1923 based on Foata normal form. 1/10243 useless extension candidates. Maximal degree in co-relation 67984. Up to 9473 conditions per place. [2024-06-27 18:36:28,028 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 266 selfloop transitions, 13 changer transitions 0/289 dead transitions. [2024-06-27 18:36:28,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 289 transitions, 3918 flow [2024-06-27 18:36:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:36:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:36:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 18:36:28,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 18:36:28,029 INFO L175 Difference]: Start difference. First operand has 191 places, 272 transitions, 3310 flow. Second operand 6 states and 133 transitions. [2024-06-27 18:36:28,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 289 transitions, 3918 flow [2024-06-27 18:36:28,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 289 transitions, 3744 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:28,433 INFO L231 Difference]: Finished difference. Result has 191 places, 272 transitions, 3168 flow [2024-06-27 18:36:28,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3168, PETRI_PLACES=191, PETRI_TRANSITIONS=272} [2024-06-27 18:36:28,434 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-27 18:36:28,434 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 272 transitions, 3168 flow [2024-06-27 18:36:28,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:28,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:28,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:28,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:36:28,434 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:28,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:28,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1211134448, now seen corresponding path program 1 times [2024-06-27 18:36:28,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:28,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39863177] [2024-06-27 18:36:28,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:28,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:28,921 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 18:36:28,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39863177] [2024-06-27 18:36:28,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39863177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:28,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:28,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:28,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951580754] [2024-06-27 18:36:28,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:28,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:28,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:28,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:28,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:28,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:28,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 272 transitions, 3168 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:28,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:28,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:28,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:30,817 INFO L124 PetriNetUnfolderBase]: 6733/10484 cut-off events. [2024-06-27 18:36:30,817 INFO L125 PetriNetUnfolderBase]: For 313536/313536 co-relation queries the response was YES. [2024-06-27 18:36:30,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67326 conditions, 10484 events. 6733/10484 cut-off events. For 313536/313536 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 66772 event pairs, 1904 based on Foata normal form. 3/10285 useless extension candidates. Maximal degree in co-relation 67234. Up to 9360 conditions per place. [2024-06-27 18:36:30,949 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 252 selfloop transitions, 41 changer transitions 0/303 dead transitions. [2024-06-27 18:36:30,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 303 transitions, 4004 flow [2024-06-27 18:36:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:36:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:36:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:36:30,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:36:30,950 INFO L175 Difference]: Start difference. First operand has 191 places, 272 transitions, 3168 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:36:30,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 303 transitions, 4004 flow [2024-06-27 18:36:31,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 303 transitions, 3959 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:31,554 INFO L231 Difference]: Finished difference. Result has 192 places, 278 transitions, 3333 flow [2024-06-27 18:36:31,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3333, PETRI_PLACES=192, PETRI_TRANSITIONS=278} [2024-06-27 18:36:31,555 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 138 predicate places. [2024-06-27 18:36:31,555 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 278 transitions, 3333 flow [2024-06-27 18:36:31,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:31,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:31,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:31,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:36:31,556 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:31,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash -31953038, now seen corresponding path program 2 times [2024-06-27 18:36:31,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:31,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434307155] [2024-06-27 18:36:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:31,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:32,052 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 18:36:32,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:32,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434307155] [2024-06-27 18:36:32,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434307155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:32,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:32,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:36:32,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481598207] [2024-06-27 18:36:32,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:36:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:32,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:36:32,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:36:32,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:32,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 278 transitions, 3333 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:32,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:32,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:32,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:33,808 INFO L124 PetriNetUnfolderBase]: 6696/10420 cut-off events. [2024-06-27 18:36:33,808 INFO L125 PetriNetUnfolderBase]: For 322143/322152 co-relation queries the response was YES. [2024-06-27 18:36:33,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67283 conditions, 10420 events. 6696/10420 cut-off events. For 322143/322152 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 66238 event pairs, 1908 based on Foata normal form. 3/10224 useless extension candidates. Maximal degree in co-relation 67191. Up to 9306 conditions per place. [2024-06-27 18:36:33,926 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 246 selfloop transitions, 43 changer transitions 0/299 dead transitions. [2024-06-27 18:36:33,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 299 transitions, 3972 flow [2024-06-27 18:36:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:36:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:36:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:36:33,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:36:33,927 INFO L175 Difference]: Start difference. First operand has 192 places, 278 transitions, 3333 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:36:33,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 299 transitions, 3972 flow [2024-06-27 18:36:34,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 299 transitions, 3888 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 18:36:34,385 INFO L231 Difference]: Finished difference. Result has 195 places, 278 transitions, 3345 flow [2024-06-27 18:36:34,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3249, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3345, PETRI_PLACES=195, PETRI_TRANSITIONS=278} [2024-06-27 18:36:34,385 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 141 predicate places. [2024-06-27 18:36:34,385 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 278 transitions, 3345 flow [2024-06-27 18:36:34,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:34,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:34,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:34,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:36:34,386 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:34,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:34,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1205412592, now seen corresponding path program 1 times [2024-06-27 18:36:34,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:34,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439000751] [2024-06-27 18:36:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:34,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:34,897 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 18:36:34,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:34,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439000751] [2024-06-27 18:36:34,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439000751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:34,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:34,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:36:34,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646090111] [2024-06-27 18:36:34,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:34,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:36:34,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:34,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:36:34,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:36:34,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:36:34,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 278 transitions, 3345 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:34,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:34,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:36:34,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:36,702 INFO L124 PetriNetUnfolderBase]: 7138/10791 cut-off events. [2024-06-27 18:36:36,702 INFO L125 PetriNetUnfolderBase]: For 336999/336999 co-relation queries the response was YES. [2024-06-27 18:36:36,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69902 conditions, 10791 events. 7138/10791 cut-off events. For 336999/336999 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 65532 event pairs, 2089 based on Foata normal form. 3/10625 useless extension candidates. Maximal degree in co-relation 69809. Up to 10057 conditions per place. [2024-06-27 18:36:36,814 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 279 selfloop transitions, 20 changer transitions 0/307 dead transitions. [2024-06-27 18:36:36,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 307 transitions, 4061 flow [2024-06-27 18:36:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:36:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:36:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 18:36:36,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-27 18:36:36,815 INFO L175 Difference]: Start difference. First operand has 195 places, 278 transitions, 3345 flow. Second operand 7 states and 151 transitions. [2024-06-27 18:36:36,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 307 transitions, 4061 flow [2024-06-27 18:36:37,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 307 transitions, 3915 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:36:37,295 INFO L231 Difference]: Finished difference. Result has 196 places, 281 transitions, 3289 flow [2024-06-27 18:36:37,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3289, PETRI_PLACES=196, PETRI_TRANSITIONS=281} [2024-06-27 18:36:37,295 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 142 predicate places. [2024-06-27 18:36:37,295 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 281 transitions, 3289 flow [2024-06-27 18:36:37,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:37,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:37,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:37,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:36:37,296 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:37,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:37,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1150873224, now seen corresponding path program 1 times [2024-06-27 18:36:37,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:37,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121413044] [2024-06-27 18:36:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:37,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:38,088 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 18:36:38,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:38,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121413044] [2024-06-27 18:36:38,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121413044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:38,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:38,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:38,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931470491] [2024-06-27 18:36:38,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:38,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:38,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:38,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:38,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:38,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:38,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 281 transitions, 3289 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:38,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:38,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:38,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:39,941 INFO L124 PetriNetUnfolderBase]: 7268/10911 cut-off events. [2024-06-27 18:36:39,941 INFO L125 PetriNetUnfolderBase]: For 399841/399854 co-relation queries the response was YES. [2024-06-27 18:36:40,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75365 conditions, 10911 events. 7268/10911 cut-off events. For 399841/399854 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 66531 event pairs, 876 based on Foata normal form. 30/10817 useless extension candidates. Maximal degree in co-relation 75271. Up to 6456 conditions per place. [2024-06-27 18:36:40,253 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 243 selfloop transitions, 120 changer transitions 0/373 dead transitions. [2024-06-27 18:36:40,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 373 transitions, 5195 flow [2024-06-27 18:36:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:36:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:36:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-27 18:36:40,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-06-27 18:36:40,254 INFO L175 Difference]: Start difference. First operand has 196 places, 281 transitions, 3289 flow. Second operand 9 states and 248 transitions. [2024-06-27 18:36:40,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 373 transitions, 5195 flow [2024-06-27 18:36:40,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 373 transitions, 5129 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:40,826 INFO L231 Difference]: Finished difference. Result has 202 places, 287 transitions, 3684 flow [2024-06-27 18:36:40,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3684, PETRI_PLACES=202, PETRI_TRANSITIONS=287} [2024-06-27 18:36:40,827 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-27 18:36:40,828 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 287 transitions, 3684 flow [2024-06-27 18:36:40,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:40,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:40,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:40,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:36:40,828 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:40,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash -377602618, now seen corresponding path program 2 times [2024-06-27 18:36:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:40,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711866290] [2024-06-27 18:36:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:41,657 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 18:36:41,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:41,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711866290] [2024-06-27 18:36:41,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711866290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:41,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:41,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:41,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656752747] [2024-06-27 18:36:41,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:41,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:41,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:41,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:41,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:41,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 287 transitions, 3684 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:41,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:41,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:41,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:43,709 INFO L124 PetriNetUnfolderBase]: 7561/11381 cut-off events. [2024-06-27 18:36:43,709 INFO L125 PetriNetUnfolderBase]: For 466883/466896 co-relation queries the response was YES. [2024-06-27 18:36:43,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81937 conditions, 11381 events. 7561/11381 cut-off events. For 466883/466896 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 70322 event pairs, 1390 based on Foata normal form. 36/11314 useless extension candidates. Maximal degree in co-relation 81840. Up to 8264 conditions per place. [2024-06-27 18:36:43,897 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 231 selfloop transitions, 129 changer transitions 0/370 dead transitions. [2024-06-27 18:36:43,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 370 transitions, 5213 flow [2024-06-27 18:36:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:43,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-27 18:36:43,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-27 18:36:43,898 INFO L175 Difference]: Start difference. First operand has 202 places, 287 transitions, 3684 flow. Second operand 10 states and 267 transitions. [2024-06-27 18:36:43,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 370 transitions, 5213 flow [2024-06-27 18:36:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 370 transitions, 4989 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 18:36:45,063 INFO L231 Difference]: Finished difference. Result has 208 places, 289 transitions, 3811 flow [2024-06-27 18:36:45,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3811, PETRI_PLACES=208, PETRI_TRANSITIONS=289} [2024-06-27 18:36:45,064 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 154 predicate places. [2024-06-27 18:36:45,064 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 289 transitions, 3811 flow [2024-06-27 18:36:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:45,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:45,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:36:45,065 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:45,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash -377606338, now seen corresponding path program 3 times [2024-06-27 18:36:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911512079] [2024-06-27 18:36:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:45,952 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 18:36:45,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:45,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911512079] [2024-06-27 18:36:45,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911512079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:45,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:45,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100074540] [2024-06-27 18:36:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:45,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:45,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:45,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:46,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:46,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 289 transitions, 3811 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:46,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:46,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:46,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:48,367 INFO L124 PetriNetUnfolderBase]: 8643/13240 cut-off events. [2024-06-27 18:36:48,367 INFO L125 PetriNetUnfolderBase]: For 574927/574940 co-relation queries the response was YES. [2024-06-27 18:36:48,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97897 conditions, 13240 events. 8643/13240 cut-off events. For 574927/574940 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 85826 event pairs, 1946 based on Foata normal form. 30/13056 useless extension candidates. Maximal degree in co-relation 97798. Up to 8709 conditions per place. [2024-06-27 18:36:48,559 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 283 selfloop transitions, 97 changer transitions 0/390 dead transitions. [2024-06-27 18:36:48,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 390 transitions, 5783 flow [2024-06-27 18:36:48,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-06-27 18:36:48,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-06-27 18:36:48,560 INFO L175 Difference]: Start difference. First operand has 208 places, 289 transitions, 3811 flow. Second operand 10 states and 274 transitions. [2024-06-27 18:36:48,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 390 transitions, 5783 flow [2024-06-27 18:36:49,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 390 transitions, 5418 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-27 18:36:49,807 INFO L231 Difference]: Finished difference. Result has 213 places, 302 transitions, 4054 flow [2024-06-27 18:36:49,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3522, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4054, PETRI_PLACES=213, PETRI_TRANSITIONS=302} [2024-06-27 18:36:49,807 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-27 18:36:49,808 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 302 transitions, 4054 flow [2024-06-27 18:36:49,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:49,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:49,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:49,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:36:49,808 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:49,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:49,809 INFO L85 PathProgramCache]: Analyzing trace with hash -906177298, now seen corresponding path program 4 times [2024-06-27 18:36:49,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:49,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708131622] [2024-06-27 18:36:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:50,645 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 18:36:50,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:50,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708131622] [2024-06-27 18:36:50,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708131622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:50,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:50,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:50,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928530594] [2024-06-27 18:36:50,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:50,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:50,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:50,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:50,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:50,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 302 transitions, 4054 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:50,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:50,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:50,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:53,406 INFO L124 PetriNetUnfolderBase]: 9035/13540 cut-off events. [2024-06-27 18:36:53,407 INFO L125 PetriNetUnfolderBase]: For 616047/616060 co-relation queries the response was YES. [2024-06-27 18:36:53,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103195 conditions, 13540 events. 9035/13540 cut-off events. For 616047/616060 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 85775 event pairs, 1908 based on Foata normal form. 36/13489 useless extension candidates. Maximal degree in co-relation 103093. Up to 11108 conditions per place. [2024-06-27 18:36:53,584 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 269 selfloop transitions, 109 changer transitions 0/388 dead transitions. [2024-06-27 18:36:53,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 388 transitions, 5833 flow [2024-06-27 18:36:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:36:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:36:53,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-27 18:36:53,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-27 18:36:53,589 INFO L175 Difference]: Start difference. First operand has 213 places, 302 transitions, 4054 flow. Second operand 9 states and 238 transitions. [2024-06-27 18:36:53,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 388 transitions, 5833 flow [2024-06-27 18:36:55,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 388 transitions, 5647 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:55,159 INFO L231 Difference]: Finished difference. Result has 221 places, 321 transitions, 4789 flow [2024-06-27 18:36:55,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3868, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4789, PETRI_PLACES=221, PETRI_TRANSITIONS=321} [2024-06-27 18:36:55,159 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-27 18:36:55,160 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 321 transitions, 4789 flow [2024-06-27 18:36:55,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:55,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:55,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:36:55,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:36:55,160 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:36:55,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:55,161 INFO L85 PathProgramCache]: Analyzing trace with hash -290910808, now seen corresponding path program 5 times [2024-06-27 18:36:55,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:55,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151288351] [2024-06-27 18:36:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:55,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:56,336 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 18:36:56,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:56,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151288351] [2024-06-27 18:36:56,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151288351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:56,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:56,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:36:56,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579713366] [2024-06-27 18:36:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:56,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:36:56,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:36:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:36:56,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:36:56,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 321 transitions, 4789 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:36:56,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:56,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:36:56,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:59,445 INFO L124 PetriNetUnfolderBase]: 9217/14202 cut-off events. [2024-06-27 18:36:59,445 INFO L125 PetriNetUnfolderBase]: For 646511/646524 co-relation queries the response was YES. [2024-06-27 18:36:59,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106481 conditions, 14202 events. 9217/14202 cut-off events. For 646511/646524 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 94531 event pairs, 2252 based on Foata normal form. 54/14035 useless extension candidates. Maximal degree in co-relation 106373. Up to 10954 conditions per place. [2024-06-27 18:36:59,762 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 308 selfloop transitions, 80 changer transitions 0/398 dead transitions. [2024-06-27 18:36:59,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 398 transitions, 6269 flow [2024-06-27 18:36:59,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:59,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-27 18:36:59,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 18:36:59,763 INFO L175 Difference]: Start difference. First operand has 221 places, 321 transitions, 4789 flow. Second operand 10 states and 265 transitions. [2024-06-27 18:36:59,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 398 transitions, 6269 flow [2024-06-27 18:37:02,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 398 transitions, 5827 flow, removed 174 selfloop flow, removed 3 redundant places. [2024-06-27 18:37:02,285 INFO L231 Difference]: Finished difference. Result has 228 places, 325 transitions, 4716 flow [2024-06-27 18:37:02,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4401, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4716, PETRI_PLACES=228, PETRI_TRANSITIONS=325} [2024-06-27 18:37:02,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-27 18:37:02,286 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 325 transitions, 4716 flow [2024-06-27 18:37:02,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:02,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:02,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:02,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:37:02,287 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:02,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash 903295736, now seen corresponding path program 1 times [2024-06-27 18:37:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:02,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276835895] [2024-06-27 18:37:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:02,953 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 18:37:02,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:02,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276835895] [2024-06-27 18:37:02,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276835895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:02,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:02,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:02,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759299605] [2024-06-27 18:37:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:03,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:03,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 325 transitions, 4716 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 18:37:03,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:03,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:03,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:05,537 INFO L124 PetriNetUnfolderBase]: 9286/14431 cut-off events. [2024-06-27 18:37:05,537 INFO L125 PetriNetUnfolderBase]: For 574394/574407 co-relation queries the response was YES. [2024-06-27 18:37:05,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106264 conditions, 14431 events. 9286/14431 cut-off events. For 574394/574407 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 97431 event pairs, 2390 based on Foata normal form. 10/14173 useless extension candidates. Maximal degree in co-relation 106154. Up to 12344 conditions per place. [2024-06-27 18:37:05,735 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 293 selfloop transitions, 68 changer transitions 0/371 dead transitions. [2024-06-27 18:37:05,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 371 transitions, 5857 flow [2024-06-27 18:37:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:37:05,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 18:37:05,736 INFO L175 Difference]: Start difference. First operand has 228 places, 325 transitions, 4716 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:37:05,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 371 transitions, 5857 flow [2024-06-27 18:37:07,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 371 transitions, 5630 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 18:37:07,874 INFO L231 Difference]: Finished difference. Result has 227 places, 330 transitions, 4745 flow [2024-06-27 18:37:07,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4497, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4745, PETRI_PLACES=227, PETRI_TRANSITIONS=330} [2024-06-27 18:37:07,875 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-27 18:37:07,875 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 330 transitions, 4745 flow [2024-06-27 18:37:07,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 18:37:07,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:07,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:07,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:37:07,875 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:07,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1464006224, now seen corresponding path program 6 times [2024-06-27 18:37:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612437239] [2024-06-27 18:37:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:07,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:08,813 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 18:37:08,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:08,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612437239] [2024-06-27 18:37:08,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612437239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:08,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:08,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:37:08,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299021736] [2024-06-27 18:37:08,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:37:08,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:37:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:37:08,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:08,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 330 transitions, 4745 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:08,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:08,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:08,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:12,896 INFO L124 PetriNetUnfolderBase]: 10114/15641 cut-off events. [2024-06-27 18:37:12,896 INFO L125 PetriNetUnfolderBase]: For 669203/669216 co-relation queries the response was YES. [2024-06-27 18:37:13,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116190 conditions, 15641 events. 10114/15641 cut-off events. For 669203/669216 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 106355 event pairs, 2230 based on Foata normal form. 30/15420 useless extension candidates. Maximal degree in co-relation 116079. Up to 11650 conditions per place. [2024-06-27 18:37:13,125 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 318 selfloop transitions, 86 changer transitions 0/414 dead transitions. [2024-06-27 18:37:13,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 414 transitions, 6532 flow [2024-06-27 18:37:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:37:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:37:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-27 18:37:13,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-06-27 18:37:13,126 INFO L175 Difference]: Start difference. First operand has 227 places, 330 transitions, 4745 flow. Second operand 9 states and 250 transitions. [2024-06-27 18:37:13,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 414 transitions, 6532 flow [2024-06-27 18:37:14,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 414 transitions, 6403 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:14,876 INFO L231 Difference]: Finished difference. Result has 233 places, 336 transitions, 5029 flow [2024-06-27 18:37:14,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4616, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5029, PETRI_PLACES=233, PETRI_TRANSITIONS=336} [2024-06-27 18:37:14,877 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 179 predicate places. [2024-06-27 18:37:14,877 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 336 transitions, 5029 flow [2024-06-27 18:37:14,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:14,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:14,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:14,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:37:14,877 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:14,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:14,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1011851834, now seen corresponding path program 7 times [2024-06-27 18:37:14,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:14,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074794035] [2024-06-27 18:37:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:14,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:15,845 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 18:37:15,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:15,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074794035] [2024-06-27 18:37:15,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074794035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:15,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:15,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:37:15,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497964224] [2024-06-27 18:37:15,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:15,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:37:15,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:37:15,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:37:16,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:16,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 336 transitions, 5029 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:16,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:16,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:19,641 INFO L124 PetriNetUnfolderBase]: 10658/16587 cut-off events. [2024-06-27 18:37:19,642 INFO L125 PetriNetUnfolderBase]: For 808202/808215 co-relation queries the response was YES. [2024-06-27 18:37:19,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126060 conditions, 16587 events. 10658/16587 cut-off events. For 808202/808215 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 115013 event pairs, 2716 based on Foata normal form. 60/16360 useless extension candidates. Maximal degree in co-relation 125947. Up to 13364 conditions per place. [2024-06-27 18:37:19,972 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 322 selfloop transitions, 88 changer transitions 0/420 dead transitions. [2024-06-27 18:37:19,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 420 transitions, 6545 flow [2024-06-27 18:37:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:37:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:37:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-06-27 18:37:19,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 18:37:19,974 INFO L175 Difference]: Start difference. First operand has 233 places, 336 transitions, 5029 flow. Second operand 10 states and 270 transitions. [2024-06-27 18:37:19,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 420 transitions, 6545 flow [2024-06-27 18:37:22,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 420 transitions, 6335 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-27 18:37:22,502 INFO L231 Difference]: Finished difference. Result has 238 places, 339 transitions, 5138 flow [2024-06-27 18:37:22,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4823, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5138, PETRI_PLACES=238, PETRI_TRANSITIONS=339} [2024-06-27 18:37:22,502 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-27 18:37:22,503 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 339 transitions, 5138 flow [2024-06-27 18:37:22,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:22,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:22,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:22,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:37:22,503 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:22,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1925726896, now seen corresponding path program 1 times [2024-06-27 18:37:22,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:22,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336619103] [2024-06-27 18:37:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:22,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:23,521 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 18:37:23,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:23,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336619103] [2024-06-27 18:37:23,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336619103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:23,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:23,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:37:23,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951590802] [2024-06-27 18:37:23,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:23,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:37:23,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:37:23,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:37:23,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:23,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 339 transitions, 5138 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:23,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:23,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:23,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:27,056 INFO L124 PetriNetUnfolderBase]: 10726/16803 cut-off events. [2024-06-27 18:37:27,056 INFO L125 PetriNetUnfolderBase]: For 770136/770149 co-relation queries the response was YES. [2024-06-27 18:37:27,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126845 conditions, 16803 events. 10726/16803 cut-off events. For 770136/770149 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 117738 event pairs, 2836 based on Foata normal form. 12/16492 useless extension candidates. Maximal degree in co-relation 126730. Up to 14478 conditions per place. [2024-06-27 18:37:27,283 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 315 selfloop transitions, 66 changer transitions 0/391 dead transitions. [2024-06-27 18:37:27,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 391 transitions, 6267 flow [2024-06-27 18:37:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:37:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:37:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:37:27,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 18:37:27,284 INFO L175 Difference]: Start difference. First operand has 238 places, 339 transitions, 5138 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:37:27,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 391 transitions, 6267 flow [2024-06-27 18:37:29,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 391 transitions, 6041 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 18:37:29,918 INFO L231 Difference]: Finished difference. Result has 239 places, 342 transitions, 5165 flow [2024-06-27 18:37:29,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4912, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5165, PETRI_PLACES=239, PETRI_TRANSITIONS=342} [2024-06-27 18:37:29,918 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-27 18:37:29,919 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 342 transitions, 5165 flow [2024-06-27 18:37:29,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:29,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:29,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:29,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:37:29,919 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:29,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1469731676, now seen corresponding path program 2 times [2024-06-27 18:37:29,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:29,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088785407] [2024-06-27 18:37:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:29,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:30,797 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 18:37:30,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:30,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088785407] [2024-06-27 18:37:30,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088785407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:30,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:30,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:37:30,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311571661] [2024-06-27 18:37:30,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:30,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:37:30,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:30,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:37:30,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:37:30,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:30,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 342 transitions, 5165 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:37:30,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:30,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:30,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:34,446 INFO L124 PetriNetUnfolderBase]: 10782/16869 cut-off events. [2024-06-27 18:37:34,446 INFO L125 PetriNetUnfolderBase]: For 745281/745294 co-relation queries the response was YES. [2024-06-27 18:37:34,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124779 conditions, 16869 events. 10782/16869 cut-off events. For 745281/745294 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 118251 event pairs, 2722 based on Foata normal form. 12/16566 useless extension candidates. Maximal degree in co-relation 124663. Up to 14228 conditions per place. [2024-06-27 18:37:34,793 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 310 selfloop transitions, 77 changer transitions 0/397 dead transitions. [2024-06-27 18:37:34,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 397 transitions, 6354 flow [2024-06-27 18:37:34,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:37:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:37:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:37:34,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 18:37:34,794 INFO L175 Difference]: Start difference. First operand has 239 places, 342 transitions, 5165 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:37:34,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 397 transitions, 6354 flow [2024-06-27 18:37:36,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 397 transitions, 6128 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-27 18:37:36,968 INFO L231 Difference]: Finished difference. Result has 242 places, 348 transitions, 5284 flow [2024-06-27 18:37:36,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4939, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5284, PETRI_PLACES=242, PETRI_TRANSITIONS=348} [2024-06-27 18:37:36,968 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-27 18:37:36,969 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 348 transitions, 5284 flow [2024-06-27 18:37:36,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:37:36,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:36,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:36,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:37:36,969 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:36,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1298573034, now seen corresponding path program 8 times [2024-06-27 18:37:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:36,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608706207] [2024-06-27 18:37:36,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:36,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:38,103 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 18:37:38,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608706207] [2024-06-27 18:37:38,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608706207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:38,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:38,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:37:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085204387] [2024-06-27 18:37:38,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:38,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:37:38,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:38,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:37:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:37:38,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:38,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 348 transitions, 5284 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:38,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:38,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:38,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:42,042 INFO L124 PetriNetUnfolderBase]: 11274/17657 cut-off events. [2024-06-27 18:37:42,042 INFO L125 PetriNetUnfolderBase]: For 886244/886257 co-relation queries the response was YES. [2024-06-27 18:37:42,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133232 conditions, 17657 events. 11274/17657 cut-off events. For 886244/886257 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 124760 event pairs, 2893 based on Foata normal form. 54/17382 useless extension candidates. Maximal degree in co-relation 133114. Up to 14632 conditions per place. [2024-06-27 18:37:42,417 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 331 selfloop transitions, 72 changer transitions 0/413 dead transitions. [2024-06-27 18:37:42,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 413 transitions, 6547 flow [2024-06-27 18:37:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:37:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:37:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:37:42,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 18:37:42,418 INFO L175 Difference]: Start difference. First operand has 242 places, 348 transitions, 5284 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:37:42,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 413 transitions, 6547 flow [2024-06-27 18:37:44,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 413 transitions, 6340 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:44,696 INFO L231 Difference]: Finished difference. Result has 247 places, 351 transitions, 5374 flow [2024-06-27 18:37:44,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5374, PETRI_PLACES=247, PETRI_TRANSITIONS=351} [2024-06-27 18:37:44,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 193 predicate places. [2024-06-27 18:37:44,697 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 351 transitions, 5374 flow [2024-06-27 18:37:44,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:44,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:44,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:44,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:37:44,698 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:44,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash 903594638, now seen corresponding path program 1 times [2024-06-27 18:37:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:44,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033142338] [2024-06-27 18:37:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:44,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:45,345 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 18:37:45,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:45,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033142338] [2024-06-27 18:37:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033142338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:45,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:45,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:45,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895092471] [2024-06-27 18:37:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:45,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:45,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:45,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 18:37:45,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 351 transitions, 5374 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:45,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:45,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 18:37:45,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:48,807 INFO L124 PetriNetUnfolderBase]: 11753/18294 cut-off events. [2024-06-27 18:37:48,807 INFO L125 PetriNetUnfolderBase]: For 865633/865633 co-relation queries the response was YES. [2024-06-27 18:37:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137671 conditions, 18294 events. 11753/18294 cut-off events. For 865633/865633 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 128428 event pairs, 3447 based on Foata normal form. 1/17935 useless extension candidates. Maximal degree in co-relation 137551. Up to 17017 conditions per place. [2024-06-27 18:37:49,036 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 358 selfloop transitions, 26 changer transitions 0/392 dead transitions. [2024-06-27 18:37:49,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 392 transitions, 6502 flow [2024-06-27 18:37:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:37:49,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-27 18:37:49,037 INFO L175 Difference]: Start difference. First operand has 247 places, 351 transitions, 5374 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:37:49,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 392 transitions, 6502 flow [2024-06-27 18:37:51,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 392 transitions, 6272 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 18:37:51,209 INFO L231 Difference]: Finished difference. Result has 248 places, 361 transitions, 5381 flow [2024-06-27 18:37:51,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5144, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5381, PETRI_PLACES=248, PETRI_TRANSITIONS=361} [2024-06-27 18:37:51,209 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-27 18:37:51,209 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 361 transitions, 5381 flow [2024-06-27 18:37:51,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:51,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:51,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:51,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:37:51,210 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:51,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:51,210 INFO L85 PathProgramCache]: Analyzing trace with hash 903594266, now seen corresponding path program 2 times [2024-06-27 18:37:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:51,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704114190] [2024-06-27 18:37:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:51,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:51,778 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 18:37:51,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:51,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704114190] [2024-06-27 18:37:51,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704114190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:51,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:51,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:37:51,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434227985] [2024-06-27 18:37:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:51,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:37:51,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:51,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:37:51,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:37:51,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:51,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 361 transitions, 5381 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 18:37:51,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:51,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:51,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:55,460 INFO L124 PetriNetUnfolderBase]: 11507/18102 cut-off events. [2024-06-27 18:37:55,460 INFO L125 PetriNetUnfolderBase]: For 832712/832727 co-relation queries the response was YES. [2024-06-27 18:37:55,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135122 conditions, 18102 events. 11507/18102 cut-off events. For 832712/832727 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 128946 event pairs, 3008 based on Foata normal form. 6/17730 useless extension candidates. Maximal degree in co-relation 135000. Up to 15544 conditions per place. [2024-06-27 18:37:55,688 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 321 selfloop transitions, 75 changer transitions 0/409 dead transitions. [2024-06-27 18:37:55,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 409 transitions, 6767 flow [2024-06-27 18:37:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:37:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:37:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:37:55,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-27 18:37:55,689 INFO L175 Difference]: Start difference. First operand has 248 places, 361 transitions, 5381 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:37:55,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 409 transitions, 6767 flow [2024-06-27 18:37:57,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 409 transitions, 6681 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-27 18:37:57,878 INFO L231 Difference]: Finished difference. Result has 254 places, 374 transitions, 5757 flow [2024-06-27 18:37:57,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5295, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5757, PETRI_PLACES=254, PETRI_TRANSITIONS=374} [2024-06-27 18:37:57,879 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 18:37:57,879 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 374 transitions, 5757 flow [2024-06-27 18:37:57,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 18:37:57,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:57,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:37:57,879 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:37:57,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash -654752206, now seen corresponding path program 3 times [2024-06-27 18:37:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002058777] [2024-06-27 18:37:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:58,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:58,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002058777] [2024-06-27 18:37:58,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002058777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:58,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:58,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:37:58,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631652058] [2024-06-27 18:37:58,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:58,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:37:58,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:37:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:37:59,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 18:37:59,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 374 transitions, 5757 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 18:37:59,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:59,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 18:37:59,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand